diff --git a/src/main/java/contest/y2023/BW97.java b/src/main/java/contest/y2023/BW97.java
new file mode 100644
index 0000000..a4148ed
--- /dev/null
+++ b/src/main/java/contest/y2023/BW97.java
@@ -0,0 +1,86 @@
+package contest.y2023;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class BW97 {
+    public static void main(String[] args) {
+        BW97 solution = new BW97();
+        System.out.println(solution.maximizeWin(new int[]{1, 1, 2, 2, 3, 3, 5}, 2));
+//        System.out.println(solution.maximizeWin(new int[]{1, 2, 3, 4}, 0));
+    }
+
+    public int maximizeWin(int[] prizePositions, int k) {
+        int sum1 = 0;
+        int sum2 = 0;
+        int sum = 1;
+        int left = 0;
+        for (int i = 1; i < prizePositions.length; i++) {
+            if (prizePositions[i] - prizePositions[left] <= k) {
+                sum += 1;
+            } else {
+                if (sum >= sum2) {
+                    if (sum >= sum1) {
+                        sum2 = sum1;
+                        sum1 = sum;
+                    } else {
+                        sum2 = sum;
+                    }
+                }
+                left++;
+                while (left < prizePositions.length && prizePositions[i] - prizePositions[left] > k) {
+                    sum -= 1;
+                    left++;
+                }
+            }
+        }
+        if (sum >= sum2) {
+            if (sum >= sum1) {
+                sum2 = sum1;
+                sum1 = sum;
+            } else {
+                sum2 = sum;
+            }
+        }
+        return sum1 + sum2;
+    }
+
+    public int maxCount(int[] banned, int n, int maxSum) {
+        Arrays.sort(banned);
+        int sum = 0;
+        int cnt = 0;
+        int index = 0;
+        for (int i = 1; i <= n; i++) {
+            if (index >= banned.length || i < banned[index]) {
+                sum += i;
+                if (sum > maxSum) {
+                    return cnt;
+                } else {
+                    cnt++;
+                }
+            } else {
+                index++;
+            }
+            while (index > 0 && index < banned.length && banned[index] == banned[index - 1]) {
+                index++;
+            }
+        }
+        return cnt;
+    }
+
+    public int[] separateDigits(int[] nums) {
+        List<String> list = new ArrayList<>();
+        for (int i = 0; i < nums.length; i++) {
+            String str = "" + nums[i];
+            for (int j = 0; j < str.length(); j++) {
+                list.add("" + str.charAt(j));
+            }
+        }
+        int[] res = new int[list.size()];
+        for (int i = 0; i < list.size(); i++) {
+            res[i] = Integer.parseInt(list.get(i));
+        }
+        return res;
+    }
+}