diff --git a/src/main/java/contest/y2022/m6/dw/Solution80.java b/src/main/java/contest/y2022/m6/dw/Solution80.java
new file mode 100644
index 0000000..d0c4bbb
--- /dev/null
+++ b/src/main/java/contest/y2022/m6/dw/Solution80.java
@@ -0,0 +1,105 @@
+package contest.y2022.m6.dw;
+
+import com.code.leet.entiy.TwoArray;
+
+import java.util.*;
+
+public class Solution80 {
+
+    public boolean strongPasswordCheckerII(String password) {
+        if (password.length() < 8) {
+            return false;
+        }
+        String str = "!@#$%^&*()-+";
+        boolean[] bl = new boolean[4];
+        for (int i = 0; i < password.length(); i++) {
+            char ch = password.charAt(i);
+            if (i > 0 && ch == password.charAt(i - 1)) {
+                return false;
+            }
+            if (!bl[0] && ch <= 'z' && ch >= 'a') {
+                bl[0] = true;
+            } else if (!bl[1] && ch <= 'Z' && ch >= 'A') {
+                bl[1] = true;
+            } else if (!bl[2] && Character.isDigit(ch)) {
+                bl[2] = true;
+            } else if (!bl[3] && str.contains(ch + "")) {
+                bl[3] = true;
+            }
+        }
+        return bl[0] && bl[1] && bl[2] && bl[3];
+    }
+
+    public int[] successfulPairs(int[] spells, int[] potions, long success) {
+        Arrays.sort(potions);
+        int[] result = new int[spells.length];
+        for (int i = 0; i < spells.length; i++) {
+            int spell = spells[i];
+            int left = 0;
+            int right = potions.length - 1;
+            while (left < right) {
+                int mid = (right - left) / 2 + left;
+                long mul = (long) spell * potions[mid];
+                if (mul < success) {
+                    left = mid + 1;
+                } else {
+                    right = mid;
+                }
+            }
+            if ((long) spell * potions[right] >= success) {
+                result[i] = potions.length - right;
+            } else {
+                result[i] = potions.length - right - 1;
+            }
+        }
+        return result;
+    }
+
+    public boolean matchReplacement(String s, String sub, char[][] mappings) {
+        if (sub.length() > s.length()) {
+            return false;
+        }
+        Map<Character, List<Character>> map = new HashMap<>();
+        for (int i = 0; i < sub.length(); i++) {
+            map.put(sub.charAt(i), new ArrayList<>());
+        }
+        for (char[] mapping : mappings) {
+            if (map.containsKey(mapping[0])) {
+                map.get(mapping[0]).add(mapping[1]);
+            }
+        }
+        for (char key: map.keySet()){
+            if(map.get(key).size()==0){
+                continue;
+            }
+
+        }
+        int index = s.indexOf(sub.charAt(0));
+        while (index >= 0 && s.length() - index >= sub.length()) {
+            s = s.substring(index);
+            boolean bl = true;
+            for (int i = 0; i < sub.length(); i++) {
+                if (sub.charAt(i) == s.charAt(i)) {
+                    continue;
+                }
+                if (!map.get(sub.charAt(i)).contains(s.charAt(i))) {
+                    bl = false;
+                    break;
+                }
+            }
+            if (bl) {
+                return true;
+            }
+            s = s.substring(1);
+            index = s.indexOf(sub.charAt(0));
+        }
+        return false;
+    }
+
+    public static void main(String[] args) {
+        Solution80 solution = new Solution80();
+        //solution.strongPasswordCheckerII("aA0!bB1@@3rbHkB8Puvl");
+        char[][] mappings = {{'e','3'},{'t','7'},{'t','8'}};
+        solution.matchReplacement("fool3e7bar","leet",mappings);
+    }
+}