diff --git a/src/main/java/com/code/leet/doubleWeek/MovieRentingSystem.java b/src/main/java/com/code/leet/doubleWeek/MovieRentingSystem.java
deleted file mode 100644
index 3219037..0000000
--- a/src/main/java/com/code/leet/doubleWeek/MovieRentingSystem.java
+++ /dev/null
@@ -1,24 +0,0 @@
-//package com.code.leet.doubleWeek;
-//
-//public class MovieRentingSystem {
-//
-//    public MovieRentingSystem(int n, int[][] entries) {
-//
-//    }
-//
-//    public List<Integer> search(int movie) {
-//
-//    }
-//
-//    public void rent(int shop, int movie) {
-//
-//    }
-//
-//    public void drop(int shop, int movie) {
-//
-//    }
-//
-//    public List<List<Integer>> report() {
-//
-//    }
-//}
diff --git a/src/main/java/com/code/leet/week/Lcp20210410.java b/src/main/java/com/code/leet/week/Lcp20210410.java
deleted file mode 100644
index 234358e..0000000
--- a/src/main/java/com/code/leet/week/Lcp20210410.java
+++ /dev/null
@@ -1,136 +0,0 @@
-package com.code.leet.week;
-
-import java.util.*;
-
-/**
- * @Author: 轩辕龙儿
- * @Date: 2021/4/10 15:07
- * @Description:
- */
-public class Lcp20210410 {
-    public int storeWater(int[] bucket, int[] vat) {
-        List<Integer> list = new ArrayList<>();
-        int count = 0;
-        int size = bucket.length;
-        for (int i = 0; i < size; i++) {
-            if (bucket[i] == 0) {
-                count++;
-                list.add(vat[i]);
-            } else {
-                list.add(vat[i] / bucket[i]);
-            }
-        }
-
-        return 0;
-    }
-
-    public static void main(String[] args) {
-        Lcp20210410 test = new Lcp20210410();
-//        System.out.println(test.maxGroupNumber(new int[]{2, 2, 2, 3, 4}));
-        System.out.println(test.electricCarPlan(new int[][]{{0, 4, 2}, {4, 3, 5}, {3, 0, 5}, {0, 1, 5}, {3, 2, 4}, {1, 2, 8}}, 8,
-                0, 2, new int[]{4, 1, 1, 3, 2}));
-    }
-
-    public int maxGroupNumber(int[] tiles) {
-        Map<Integer, Integer> map = new HashMap<>();
-        int min = Integer.MAX_VALUE;
-        int max = -1;
-        for (int num : tiles) {
-            min = Math.min(min, num);
-            max = Math.max(max, num);
-            map.put(num, map.containsKey(num) ? map.get(num) + 1 : 1);
-        }
-        int count = 0;
-        int l0 = 0;
-        int l1 = map.get(min);
-        int l2 = map.getOrDefault(min + 1, 0);
-        int cur;
-        for (int i = min + 2; i <= max; i++) {
-            if (!map.containsKey(i)) {
-                count += l0 / 3 + l1 / 3 + l2 / 3;
-                l0 = l1 % 3;
-                l1 = l2 % 3;
-                l2 = 0;
-                continue;
-            }
-            cur = map.get(i);
-            if (l1 > 0 && l2 > 0) {
-                int tempMin = Math.min(cur, Math.min(l1, l2));
-                int tempCount = l1 / 3 + l2 / 3 + cur / 3;
-                if (tempMin >= tempCount) {
-                    count += tempMin;
-                    l0 = l1 - tempMin;
-                    l1 = l2 - tempMin;
-                    l2 = cur - tempMin;
-                } else {
-                    count += l1 / 3;
-                    l0 = l1 % 3;
-                    l1 = l2;
-                    l2 = cur;
-                }
-            } else {
-                count += l0 / 3 + l1 / 3;
-                l0 = l1 % 3;
-                l1 = l2;
-                l2 = cur;
-            }
-        }
-        return count + l1 / 3 + l2 / 3;
-    }
-
-    public int electricCarPlan(int[][] paths, int cnt, int start, int end, int[] charge) {
-        int arrSize = charge.length;
-        int[][] edges = new int[arrSize][arrSize];
-        int size = paths.length;
-        for (int i = 0; i < arrSize; i++) {
-            for (int j = 0; j < arrSize; j++) {
-                edges[i][j] = i == j ? 0 : Integer.MAX_VALUE;
-            }
-        }
-        int[] distance = new int[arrSize];
-        for (int i = 0; i < arrSize; i++) {
-            distance[i] = i == start ? 0 : Integer.MAX_VALUE;
-        }
-        for (int i = 0; i < size; i++) {
-            int num1 = paths[i][0];
-            int num2 = paths[i][1];
-            int tempLength = paths[i][2];
-            edges[num1][num2] = tempLength * (charge[num1] + 1);
-            edges[num2][num1] = tempLength * (charge[num2] + 1);
-            if (num1 == start) {
-                distance[num2] = edges[num1][num2];
-            }
-        }
-        boolean[] st = new boolean[arrSize];
-        // 处理从源点到其余顶点的最短路径
-        for (int i = 0; i < arrSize; ++i) {
-            int min = Integer.MAX_VALUE;
-            int index = -1;
-            // 比较从源点到其余顶点的路径长度
-            for (int j = 0; j < arrSize; ++j) {
-                // 从源点到j顶点的最短路径还没有找到
-                if (!st[j]) {
-                    // 从源点到j顶点的路径长度最小
-                    if (distance[j] < min) {
-                        index = j;
-                        min = distance[j];
-                    }
-                }
-            }
-            //找到源点到索引为index顶点的最短路径长度
-            if (index != -1) {
-                st[index] = true;
-            }
-            // 更新当前最短路径及距离
-            for (int w = 0; w < arrSize; w++) {
-                if (!st[w]) {
-                    if (edges[index][w] != Integer.MAX_VALUE
-                            && (min + edges[index][w] < distance[w])) {
-                        distance[w] = min + edges[index][w];
-                    }
-                }
-            }
-        }
-        return distance[end];
-    }
-}
diff --git a/src/main/java/com/code/leet/week/LcpSolution.java b/src/main/java/com/code/leet/week/LcpSolution.java
deleted file mode 100644
index adda2eb..0000000
--- a/src/main/java/com/code/leet/week/LcpSolution.java
+++ /dev/null
@@ -1,121 +0,0 @@
-package com.code.leet.week;
-
-import java.util.*;
-
-/**
- * @Author: 轩辕龙儿
- * @Date: 2021/4/5 15:02
- * @Description:
- */
-public class LcpSolution {
-    public static void main(String[] args) {
-        LcpSolution solution = new LcpSolution();
-//        System.out.println(solution.orchestraLayout(4, 1, 2));
-
-        int[] nums = {2, 2, 3, 5};
-        int target = 6;
-        System.out.println(solution.purchasePlans(nums, target));
-    }
-
-    public int magicTower(int[] nums) {
-        long sum = 1;
-        Stack<Integer> stack1 = new Stack<>();
-        Stack<Integer> stack2 = new Stack<>();
-        List<Integer> list = new ArrayList<>();
-        int size = nums.length;
-        int count = 0;
-        for (int i = 0; i < size; i++) {
-            sum += nums[i];
-            if (nums[i] < 0) {
-                while (!stack1.isEmpty() && stack1.peek() < nums[i]) {
-                    stack2.push(stack1.pop());
-                }
-                stack1.push(nums[i]);
-                while (!stack2.isEmpty()) {
-                    stack1.push(stack2.pop());
-                }
-            }
-            if (sum <= 0) {
-                sum -= stack1.peek();
-                list.add(stack1.pop());
-                count++;
-            }
-        }
-        size = list.size();
-        for (int i = 0; i < size; i++) {
-            sum += list.get(i);
-            if (sum <= 0) {
-                return -1;
-            }
-        }
-        return count;
-    }
-
-    public int orchestraLayout(int num, int xPos, int yPos) {
-        int round = Math.min(Math.min(xPos, num - xPos - 1), Math.min(yPos, num - yPos - 1));
-        int result = 4 * num * round - 4 * round * round;
-        if (xPos == round) {
-            result += yPos - round + 1;
-        } else if (yPos == num - 1 - round) {
-            result += (num - 1 - round * 2) + xPos - round + 1;
-        } else if (xPos == num - 1 - round) {
-            result += (num - 1 - round * 2) * 2 + num - round - yPos;
-        } else {
-            result += (num - 1 - round * 2) * 3 + num - round - xPos;
-        }
-        return result % 9;
-    }
-
-    //    public int purchasePlans(int[] nums, int target) {
-//        long count = 0;
-//        List<Integer> numList = Arrays.stream(nums).boxed().collect(Collectors.toList());
-//        Collections.sort(numList);
-//        Map<Integer, Long> map = new HashMap<>();
-//        int temp = -1;
-//        for (int num : numList) {
-//            if (num >= target) {
-//                break;
-//            }
-//            if (temp == -1) {
-//                for (int i = 1; i < num; i++) {
-//                    map.put(i, Long.parseLong("0"));
-//                }
-//                map.put(num, Long.parseLong("1"));
-//            } else {
-//                if (map.containsKey(target - num)) {
-//                    count += map.get(target - num);
-//                } else {
-//                    count += map.get(temp);
-//                }
-//                for (int i = temp + 1; i < num; i++) {
-//                    map.put(i, map.get(temp));
-//                }
-//                map.put(num, map.get(temp) + 1);
-//            }
-//            temp = num;
-//        }
-//        return (int) (count % (Math.pow(10, 9) + 7));
-//    }
-    public int purchasePlans(int[] nums, int target) {
-        int[] sort = new int[target];
-        long[] count = new long[target];
-        for (int num : nums) {
-            if (num < target) {
-                sort[num] += 1;
-            }
-        }
-        long sum = 0;
-        for (int i = 1; i < target; i++) {
-            sum += sort[i];
-            count[i] = sum;
-        }
-        long result = 0;
-        for (int num : nums) {
-            if (target > num) {
-                result += num <= target - num ? count[target - num] - 1 : count[target - num];
-            }
-        }
-        Calendar calendar = Calendar.getInstance();
-        return (int) (result / 2 % (Math.pow(10, 9) + 7));
-    }
-}
diff --git a/src/main/java/com/code/leet/Fall2021.java b/src/main/java/contest/y2021/fall/person/Fall2021.java
similarity index 99%
rename from src/main/java/com/code/leet/Fall2021.java
rename to src/main/java/contest/y2021/fall/person/Fall2021.java
index 4d28be5..90d843d 100644
--- a/src/main/java/com/code/leet/Fall2021.java
+++ b/src/main/java/contest/y2021/fall/person/Fall2021.java
@@ -1,7 +1,6 @@
-package com.code.leet;
+package contest.y2021.fall.person;
 
 import com.code.leet.entiy.TwoArray;
-import javafx.util.Pair;
 
 import java.util.*;
 
diff --git a/src/main/java/com/code/leet/season/fall2021/contest1/Solution.java b/src/main/java/contest/y2021/fall/term/contest1/Solution.java
similarity index 92%
rename from src/main/java/com/code/leet/season/fall2021/contest1/Solution.java
rename to src/main/java/contest/y2021/fall/term/contest1/Solution.java
index 443fa3c..30371c4 100644
--- a/src/main/java/com/code/leet/season/fall2021/contest1/Solution.java
+++ b/src/main/java/contest/y2021/fall/term/contest1/Solution.java
@@ -1,4 +1,4 @@
-package com.code.leet.season.fall2021.contest1;
+package contest.y2021.fall.term.contest1;
 
 import java.util.HashSet;
 import java.util.Set;
diff --git a/src/main/java/com/code/leet/season/fall2021/contest2/Solution.java b/src/main/java/contest/y2021/fall/term/contest2/Solution.java
similarity index 95%
rename from src/main/java/com/code/leet/season/fall2021/contest2/Solution.java
rename to src/main/java/contest/y2021/fall/term/contest2/Solution.java
index 13ed24e..e7268e6 100644
--- a/src/main/java/com/code/leet/season/fall2021/contest2/Solution.java
+++ b/src/main/java/contest/y2021/fall/term/contest2/Solution.java
@@ -1,9 +1,7 @@
-package com.code.leet.season.fall2021.contest2;
+package contest.y2021.fall.term.contest2;
 
 import com.code.leet.entiy.TwoArray;
-import javafx.util.Pair;
 
-import java.awt.*;
 import java.util.*;
 import java.util.List;
 
diff --git a/src/main/java/com/code/leet/season/fall2021/contest3/Solution.java b/src/main/java/contest/y2021/fall/term/contest3/Solution.java
similarity index 98%
rename from src/main/java/com/code/leet/season/fall2021/contest3/Solution.java
rename to src/main/java/contest/y2021/fall/term/contest3/Solution.java
index 9e84d21..45cd570 100644
--- a/src/main/java/com/code/leet/season/fall2021/contest3/Solution.java
+++ b/src/main/java/contest/y2021/fall/term/contest3/Solution.java
@@ -1,4 +1,4 @@
-package com.code.leet.season.fall2021.contest3;
+package contest.y2021.fall.term.contest3;
 
 import com.code.leet.entiy.TwoArray;
 
diff --git a/src/main/java/com/code/leet/doubleWeek/SolutionD49.java b/src/main/java/contest/y2021/m04/dw/SolutionD49.java
similarity index 98%
rename from src/main/java/com/code/leet/doubleWeek/SolutionD49.java
rename to src/main/java/contest/y2021/m04/dw/SolutionD49.java
index 4e5770b..eeb325a 100644
--- a/src/main/java/com/code/leet/doubleWeek/SolutionD49.java
+++ b/src/main/java/contest/y2021/m04/dw/SolutionD49.java
@@ -1,4 +1,4 @@
-package com.code.leet.doubleWeek;
+package contest.y2021.m04.dw;
 
 import java.util.HashMap;
 import java.util.List;
diff --git a/src/main/java/com/code/leet/doubleWeek/SolutionD50.java b/src/main/java/contest/y2021/m04/dw/SolutionD50.java
similarity index 99%
rename from src/main/java/com/code/leet/doubleWeek/SolutionD50.java
rename to src/main/java/contest/y2021/m04/dw/SolutionD50.java
index 8370265..d4ae5ed 100644
--- a/src/main/java/com/code/leet/doubleWeek/SolutionD50.java
+++ b/src/main/java/contest/y2021/m04/dw/SolutionD50.java
@@ -1,4 +1,4 @@
-package com.code.leet.doubleWeek;
+package contest.y2021.m04.dw;
 
 /**
  * @Author: 轩辕龙儿
diff --git a/src/main/java/com/code/leet/week/Solution235.java b/src/main/java/contest/y2021/m04/week/Solution235.java
similarity index 98%
rename from src/main/java/com/code/leet/week/Solution235.java
rename to src/main/java/contest/y2021/m04/week/Solution235.java
index b070ea8..f89f343 100644
--- a/src/main/java/com/code/leet/week/Solution235.java
+++ b/src/main/java/contest/y2021/m04/week/Solution235.java
@@ -1,4 +1,4 @@
-package com.code.leet.week;
+package contest.y2021.m04.week;
 
 import java.util.*;
 import java.util.stream.Collectors;
diff --git a/src/main/java/com/code/leet/week/Solution237.java b/src/main/java/contest/y2021/m04/week/Solution237.java
similarity index 96%
rename from src/main/java/com/code/leet/week/Solution237.java
rename to src/main/java/contest/y2021/m04/week/Solution237.java
index 689ec8e..c1aa289 100644
--- a/src/main/java/com/code/leet/week/Solution237.java
+++ b/src/main/java/contest/y2021/m04/week/Solution237.java
@@ -1,4 +1,4 @@
-package com.code.leet.week;
+package contest.y2021.m04.week;
 
 import java.util.*;
 
diff --git a/src/main/java/com/code/leet/week/Solution238.java b/src/main/java/contest/y2021/m04/week/Solution238.java
similarity index 98%
rename from src/main/java/com/code/leet/week/Solution238.java
rename to src/main/java/contest/y2021/m04/week/Solution238.java
index 0cc6278..28741dd 100644
--- a/src/main/java/com/code/leet/week/Solution238.java
+++ b/src/main/java/contest/y2021/m04/week/Solution238.java
@@ -1,4 +1,4 @@
-package com.code.leet.week;
+package contest.y2021.m04.week;
 
 import java.util.Arrays;
 import java.util.List;
diff --git a/src/main/java/com/code/leet/doubleWeek/SolutionD52.java b/src/main/java/contest/y2021/m05/dw/SolutionD52.java
similarity index 99%
rename from src/main/java/com/code/leet/doubleWeek/SolutionD52.java
rename to src/main/java/contest/y2021/m05/dw/SolutionD52.java
index e503c7e..660675c 100644
--- a/src/main/java/com/code/leet/doubleWeek/SolutionD52.java
+++ b/src/main/java/contest/y2021/m05/dw/SolutionD52.java
@@ -1,4 +1,4 @@
-package com.code.leet.doubleWeek;
+package contest.y2021.m05.dw;
 
 import java.util.*;
 
diff --git a/src/main/java/com/code/leet/doubleWeek/SolutionD53.java b/src/main/java/contest/y2021/m05/dw/SolutionD53.java
similarity index 98%
rename from src/main/java/com/code/leet/doubleWeek/SolutionD53.java
rename to src/main/java/contest/y2021/m05/dw/SolutionD53.java
index db2f606..c58a534 100644
--- a/src/main/java/com/code/leet/doubleWeek/SolutionD53.java
+++ b/src/main/java/contest/y2021/m05/dw/SolutionD53.java
@@ -1,4 +1,4 @@
-package com.code.leet.doubleWeek;
+package contest.y2021.m05.dw;
 
 import java.util.*;
 import java.util.stream.Collectors;
diff --git a/src/main/java/com/code/leet/week/FindSumPairs.java b/src/main/java/contest/y2021/m05/week/FindSumPairs.java
similarity index 93%
rename from src/main/java/com/code/leet/week/FindSumPairs.java
rename to src/main/java/contest/y2021/m05/week/FindSumPairs.java
index 2351f6e..640d716 100644
--- a/src/main/java/com/code/leet/week/FindSumPairs.java
+++ b/src/main/java/contest/y2021/m05/week/FindSumPairs.java
@@ -1,7 +1,6 @@
-package com.code.leet.week;
+package contest.y2021.m05.week;
 
 import java.util.*;
-import java.util.stream.Collectors;
 
 /**
  * @Author: 轩辕龙儿
diff --git a/src/main/java/com/code/leet/week/Solution240.java b/src/main/java/contest/y2021/m05/week/Solution240.java
similarity index 99%
rename from src/main/java/com/code/leet/week/Solution240.java
rename to src/main/java/contest/y2021/m05/week/Solution240.java
index f7f2b94..40a37a6 100644
--- a/src/main/java/com/code/leet/week/Solution240.java
+++ b/src/main/java/contest/y2021/m05/week/Solution240.java
@@ -1,4 +1,4 @@
-package com.code.leet.week;
+package contest.y2021.m05.week;
 
 import java.util.Arrays;
 
diff --git a/src/main/java/com/code/leet/week/Solution241.java b/src/main/java/contest/y2021/m05/week/Solution241.java
similarity index 98%
rename from src/main/java/com/code/leet/week/Solution241.java
rename to src/main/java/contest/y2021/m05/week/Solution241.java
index 95ca4f3..cfb4072 100644
--- a/src/main/java/com/code/leet/week/Solution241.java
+++ b/src/main/java/contest/y2021/m05/week/Solution241.java
@@ -1,4 +1,4 @@
-package com.code.leet.week;
+package contest.y2021.m05.week;
 
 import java.util.ArrayList;
 import java.util.List;
diff --git a/src/main/java/com/code/leet/week/Solution242.java b/src/main/java/contest/y2021/m05/week/Solution242.java
similarity index 98%
rename from src/main/java/com/code/leet/week/Solution242.java
rename to src/main/java/contest/y2021/m05/week/Solution242.java
index 7c14460..deafee1 100644
--- a/src/main/java/com/code/leet/week/Solution242.java
+++ b/src/main/java/contest/y2021/m05/week/Solution242.java
@@ -1,4 +1,4 @@
-package com.code.leet.week;
+package contest.y2021.m05.week;
 
 public class Solution242 {
     public static void main(String[] args) {
diff --git a/src/main/java/com/code/leet/week/Solution243.java b/src/main/java/contest/y2021/m05/week/Solution243.java
similarity index 99%
rename from src/main/java/com/code/leet/week/Solution243.java
rename to src/main/java/contest/y2021/m05/week/Solution243.java
index fbf710a..5118a52 100644
--- a/src/main/java/com/code/leet/week/Solution243.java
+++ b/src/main/java/contest/y2021/m05/week/Solution243.java
@@ -1,4 +1,4 @@
-package com.code.leet.week;
+package contest.y2021.m05.week;
 
 import java.util.*;
 
diff --git a/src/main/java/com/code/leet/doubleWeek/SolutionD54.java b/src/main/java/contest/y2021/m06/dw/SolutionD54.java
similarity index 99%
rename from src/main/java/com/code/leet/doubleWeek/SolutionD54.java
rename to src/main/java/contest/y2021/m06/dw/SolutionD54.java
index 42395e9..095d6af 100644
--- a/src/main/java/com/code/leet/doubleWeek/SolutionD54.java
+++ b/src/main/java/contest/y2021/m06/dw/SolutionD54.java
@@ -1,4 +1,4 @@
-package com.code.leet.doubleWeek;
+package contest.y2021.m06.dw;
 
 public class SolutionD54 {
     public static void main(String[] args) {
diff --git a/src/main/java/com/code/leet/doubleWeek/SolutionD55.java b/src/main/java/contest/y2021/m06/dw/SolutionD55.java
similarity index 98%
rename from src/main/java/com/code/leet/doubleWeek/SolutionD55.java
rename to src/main/java/contest/y2021/m06/dw/SolutionD55.java
index 86457e7..bc9d6d5 100644
--- a/src/main/java/com/code/leet/doubleWeek/SolutionD55.java
+++ b/src/main/java/contest/y2021/m06/dw/SolutionD55.java
@@ -1,4 +1,4 @@
-package com.code.leet.doubleWeek;
+package contest.y2021.m06.dw;
 
 import java.util.Arrays;
 
diff --git a/src/main/java/com/code/leet/week/Solution245.java b/src/main/java/contest/y2021/m06/week/Solution245.java
similarity index 97%
rename from src/main/java/com/code/leet/week/Solution245.java
rename to src/main/java/contest/y2021/m06/week/Solution245.java
index fe09b07..60795bf 100644
--- a/src/main/java/com/code/leet/week/Solution245.java
+++ b/src/main/java/contest/y2021/m06/week/Solution245.java
@@ -1,6 +1,4 @@
-package com.code.leet.week;
-
-import com.code.leet.doubleWeek.SolutionD54;
+package contest.y2021.m06.week;
 
 import java.util.ArrayList;
 import java.util.List;
diff --git a/src/main/java/com/code/leet/week/Solution247.java b/src/main/java/contest/y2021/m06/week/Solution247.java
similarity index 98%
rename from src/main/java/com/code/leet/week/Solution247.java
rename to src/main/java/contest/y2021/m06/week/Solution247.java
index 86c4c1b..21d526a 100644
--- a/src/main/java/com/code/leet/week/Solution247.java
+++ b/src/main/java/contest/y2021/m06/week/Solution247.java
@@ -1,4 +1,4 @@
-package com.code.leet.week;
+package contest.y2021.m06.week;
 
 import java.util.*;
 
diff --git a/src/main/java/com/code/leet/doubleWeek/SolutionD56.java b/src/main/java/contest/y2021/m07/dw/SolutionD56.java
similarity index 99%
rename from src/main/java/com/code/leet/doubleWeek/SolutionD56.java
rename to src/main/java/contest/y2021/m07/dw/SolutionD56.java
index ddf08d9..84977ab 100644
--- a/src/main/java/com/code/leet/doubleWeek/SolutionD56.java
+++ b/src/main/java/contest/y2021/m07/dw/SolutionD56.java
@@ -1,4 +1,4 @@
-package com.code.leet.doubleWeek;
+package contest.y2021.m07.dw;
 
 import javafx.util.Pair;
 
diff --git a/src/main/java/com/code/leet/doubleWeek/SolutionD57.java b/src/main/java/contest/y2021/m07/dw/SolutionD57.java
similarity index 99%
rename from src/main/java/com/code/leet/doubleWeek/SolutionD57.java
rename to src/main/java/contest/y2021/m07/dw/SolutionD57.java
index 9c414cf..548f24f 100644
--- a/src/main/java/com/code/leet/doubleWeek/SolutionD57.java
+++ b/src/main/java/contest/y2021/m07/dw/SolutionD57.java
@@ -1,4 +1,4 @@
-package com.code.leet.doubleWeek;
+package contest.y2021.m07.dw;
 
 import java.util.*;
 
diff --git a/src/main/java/com/code/leet/week/Solution248.java b/src/main/java/contest/y2021/m07/week/Solution248.java
similarity index 98%
rename from src/main/java/com/code/leet/week/Solution248.java
rename to src/main/java/contest/y2021/m07/week/Solution248.java
index 4fd3a94..6fa6e7b 100644
--- a/src/main/java/com/code/leet/week/Solution248.java
+++ b/src/main/java/contest/y2021/m07/week/Solution248.java
@@ -1,4 +1,4 @@
-package com.code.leet.week;
+package contest.y2021.m07.week;
 
 import java.util.Arrays;
 import java.util.HashMap;
diff --git a/src/main/java/com/code/leet/week/Solution251.java b/src/main/java/contest/y2021/m07/week/Solution251.java
similarity index 98%
rename from src/main/java/com/code/leet/week/Solution251.java
rename to src/main/java/contest/y2021/m07/week/Solution251.java
index 823afd0..0242ffb 100644
--- a/src/main/java/com/code/leet/week/Solution251.java
+++ b/src/main/java/contest/y2021/m07/week/Solution251.java
@@ -1,4 +1,4 @@
-package com.code.leet.week;
+package contest.y2021.m07.week;
 
 import java.util.*;
 
diff --git a/src/main/java/com/code/leet/doubleWeek/SolutionD58.java b/src/main/java/contest/y2021/m08/dw/SolutionD58.java
similarity index 98%
rename from src/main/java/com/code/leet/doubleWeek/SolutionD58.java
rename to src/main/java/contest/y2021/m08/dw/SolutionD58.java
index bb989e7..9295a08 100644
--- a/src/main/java/com/code/leet/doubleWeek/SolutionD58.java
+++ b/src/main/java/contest/y2021/m08/dw/SolutionD58.java
@@ -1,4 +1,4 @@
-package com.code.leet.doubleWeek;
+package contest.y2021.m08.dw;
 
 public class SolutionD58 {
     public static void main(String[] args) {
diff --git a/src/main/java/com/code/leet/doubleWeek/SolutionD59.java b/src/main/java/contest/y2021/m08/dw/SolutionD59.java
similarity index 96%
rename from src/main/java/com/code/leet/doubleWeek/SolutionD59.java
rename to src/main/java/contest/y2021/m08/dw/SolutionD59.java
index cdb1d67..251d128 100644
--- a/src/main/java/com/code/leet/doubleWeek/SolutionD59.java
+++ b/src/main/java/contest/y2021/m08/dw/SolutionD59.java
@@ -1,7 +1,4 @@
-package com.code.leet.doubleWeek;
-
-import com.code.leet.entiy.TwoArray;
-import javafx.util.Pair;
+package contest.y2021.m08.dw;
 
 import java.util.HashMap;
 import java.util.Map;
diff --git a/src/main/java/com/code/leet/week/Solution252.java b/src/main/java/contest/y2021/m08/week/Solution252.java
similarity index 95%
rename from src/main/java/com/code/leet/week/Solution252.java
rename to src/main/java/contest/y2021/m08/week/Solution252.java
index 9ec3f34..ac0d4f9 100644
--- a/src/main/java/com/code/leet/week/Solution252.java
+++ b/src/main/java/contest/y2021/m08/week/Solution252.java
@@ -1,7 +1,6 @@
-package com.code.leet.week;
+package contest.y2021.m08.week;
 
 import java.util.Arrays;
-import java.util.Comparator;
 import java.util.List;
 
 /**
diff --git a/src/main/java/com/code/leet/week/Solution256.java b/src/main/java/contest/y2021/m08/week/Solution256.java
similarity index 93%
rename from src/main/java/com/code/leet/week/Solution256.java
rename to src/main/java/contest/y2021/m08/week/Solution256.java
index 9097059..d3f5ad6 100644
--- a/src/main/java/com/code/leet/week/Solution256.java
+++ b/src/main/java/contest/y2021/m08/week/Solution256.java
@@ -1,10 +1,7 @@
-package com.code.leet.week;
+package contest.y2021.m08.week;
 
 import java.math.BigInteger;
 import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-import java.util.stream.Collectors;
 
 /**
  * @description:
diff --git a/src/main/java/com/code/leet/doubleWeek/SolutionD60.java b/src/main/java/contest/y2021/m09/dw/SolutionD60.java
similarity index 98%
rename from src/main/java/com/code/leet/doubleWeek/SolutionD60.java
rename to src/main/java/contest/y2021/m09/dw/SolutionD60.java
index 48a515a..df85716 100644
--- a/src/main/java/com/code/leet/doubleWeek/SolutionD60.java
+++ b/src/main/java/contest/y2021/m09/dw/SolutionD60.java
@@ -1,6 +1,5 @@
-package com.code.leet.doubleWeek;
+package contest.y2021.m09.dw;
 
-import java.math.BigInteger;
 import java.util.*;
 
 public class SolutionD60 {
diff --git a/src/main/java/com/code/leet/week/Solution257.java b/src/main/java/contest/y2021/m09/week/Solution257.java
similarity index 96%
rename from src/main/java/com/code/leet/week/Solution257.java
rename to src/main/java/contest/y2021/m09/week/Solution257.java
index 51a67ba..f59d82a 100644
--- a/src/main/java/com/code/leet/week/Solution257.java
+++ b/src/main/java/contest/y2021/m09/week/Solution257.java
@@ -1,8 +1,5 @@
-package com.code.leet.week;
+package contest.y2021.m09.week;
 
-import com.code.leet.entiy.TwoArray;
-
-import java.math.BigInteger;
 import java.util.*;
 
 /**
diff --git a/src/main/java/com/code/leet/week/Solution258.java b/src/main/java/contest/y2021/m09/week/Solution258.java
similarity index 95%
rename from src/main/java/com/code/leet/week/Solution258.java
rename to src/main/java/contest/y2021/m09/week/Solution258.java
index 8d77735..6ec9227 100644
--- a/src/main/java/com/code/leet/week/Solution258.java
+++ b/src/main/java/contest/y2021/m09/week/Solution258.java
@@ -1,6 +1,4 @@
-package com.code.leet.week;
-
-import javafx.util.Pair;
+package contest.y2021.m09.week;
 
 import java.util.*;
 
diff --git a/src/main/java/com/code/leet/week/Solution259.java b/src/main/java/contest/y2021/m09/week/Solution259.java
similarity index 99%
rename from src/main/java/com/code/leet/week/Solution259.java
rename to src/main/java/contest/y2021/m09/week/Solution259.java
index b0e4936..304ceb1 100644
--- a/src/main/java/com/code/leet/week/Solution259.java
+++ b/src/main/java/contest/y2021/m09/week/Solution259.java
@@ -1,4 +1,4 @@
-package com.code.leet.week;
+package contest.y2021.m09.week;
 
 import java.util.*;
 
diff --git a/src/main/java/com/code/leet/week/Solution260.java b/src/main/java/contest/y2021/m09/week/Solution260.java
similarity index 98%
rename from src/main/java/com/code/leet/week/Solution260.java
rename to src/main/java/contest/y2021/m09/week/Solution260.java
index a605f31..2c8587f 100644
--- a/src/main/java/com/code/leet/week/Solution260.java
+++ b/src/main/java/contest/y2021/m09/week/Solution260.java
@@ -1,4 +1,4 @@
-package com.code.leet.week;
+package contest.y2021.m09.week;
 
 
 import com.code.leet.entiy.TwoArray;
diff --git a/src/main/java/com/code/leet/doubleWeek/SolutionD62.java b/src/main/java/contest/y2021/m10/dw/SolutionD62.java
similarity index 98%
rename from src/main/java/com/code/leet/doubleWeek/SolutionD62.java
rename to src/main/java/contest/y2021/m10/dw/SolutionD62.java
index be5b063..b126143 100644
--- a/src/main/java/com/code/leet/doubleWeek/SolutionD62.java
+++ b/src/main/java/contest/y2021/m10/dw/SolutionD62.java
@@ -1,6 +1,5 @@
-package com.code.leet.doubleWeek;
+package contest.y2021.m10.dw;
 
-import java.math.BigInteger;
 import java.util.*;
 
 public class SolutionD62 {
diff --git a/src/main/java/com/code/leet/doubleWeek/SolutionD63.java b/src/main/java/contest/y2021/m10/dw/SolutionD63.java
similarity index 98%
rename from src/main/java/com/code/leet/doubleWeek/SolutionD63.java
rename to src/main/java/contest/y2021/m10/dw/SolutionD63.java
index ac85a49..387c276 100644
--- a/src/main/java/com/code/leet/doubleWeek/SolutionD63.java
+++ b/src/main/java/contest/y2021/m10/dw/SolutionD63.java
@@ -1,4 +1,4 @@
-package com.code.leet.doubleWeek;
+package contest.y2021.m10.dw;
 
 import java.util.*;
 
diff --git a/src/main/java/com/code/leet/week/Solution261.java b/src/main/java/contest/y2021/m10/week/Solution261.java
similarity index 98%
rename from src/main/java/com/code/leet/week/Solution261.java
rename to src/main/java/contest/y2021/m10/week/Solution261.java
index e65881d..b9477e5 100644
--- a/src/main/java/com/code/leet/week/Solution261.java
+++ b/src/main/java/contest/y2021/m10/week/Solution261.java
@@ -1,8 +1,6 @@
-package com.code.leet.week;
+package contest.y2021.m10.week;
 
 
-import com.code.leet.entiy.TwoArray;
-
 import java.util.*;
 
 /**
diff --git a/src/main/java/com/code/leet/week/Solution262.java b/src/main/java/contest/y2021/m10/week/Solution262.java
similarity index 98%
rename from src/main/java/com/code/leet/week/Solution262.java
rename to src/main/java/contest/y2021/m10/week/Solution262.java
index 3e34445..8ded625 100644
--- a/src/main/java/com/code/leet/week/Solution262.java
+++ b/src/main/java/contest/y2021/m10/week/Solution262.java
@@ -1,4 +1,4 @@
-package com.code.leet.week;
+package contest.y2021.m10.week;
 
 import java.util.ArrayList;
 import java.util.Arrays;
diff --git a/src/main/java/com/code/leet/week/Solution263.java b/src/main/java/contest/y2021/m10/week/Solution263.java
similarity index 98%
rename from src/main/java/com/code/leet/week/Solution263.java
rename to src/main/java/contest/y2021/m10/week/Solution263.java
index 4efef04..fa6f09b 100644
--- a/src/main/java/com/code/leet/week/Solution263.java
+++ b/src/main/java/contest/y2021/m10/week/Solution263.java
@@ -1,8 +1,7 @@
-package com.code.leet.week;
+package contest.y2021.m10.week;
 
 import com.code.leet.entiy.TwoArray;
 
-import java.math.BigInteger;
 import java.util.*;
 
 /**
diff --git a/src/main/java/com/code/leet/week/StockPrice.java b/src/main/java/contest/y2021/m10/week/StockPrice.java
similarity index 96%
rename from src/main/java/com/code/leet/week/StockPrice.java
rename to src/main/java/contest/y2021/m10/week/StockPrice.java
index 3d36247..79d46e2 100644
--- a/src/main/java/com/code/leet/week/StockPrice.java
+++ b/src/main/java/contest/y2021/m10/week/StockPrice.java
@@ -1,4 +1,4 @@
-package com.code.leet.week;
+package contest.y2021.m10.week;
 
 import java.util.HashMap;
 import java.util.Map;