T258478 [Aya Round 1 A] 幻想乡扑克游戏

https://www.luogu.com.cn/record/82790224

Luogu/T258478/T258478.cpp

@@ -0,0 +1,46 @@
+#include <iostream>
+#include <algorithm>
+#include <string>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+int t;
+std::string s;
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    cin >> t;
+
+    while (t--) {
+        bool flag = false;
+
+        cin >> s;
+
+        std::sort(s.begin(), s.end());
+
+        if (s.find('X') != std::string::npos && s.find('D') != std::string::npos) {
+            flag = true;
+        }
+
+        int cnt = 1;
+        char lst = s[0];
+        for (int i = 1; i < s.size(); lst = s[i++]) {
+            if (s[i] == lst) {
+                cnt++;
+            } else {
+                if (cnt == 4) flag = true;
+                cnt = 1;
+            }
+        }
+
+        if (cnt == 4) flag = true;
+
+        cout << (flag ? "Yes" : "No") << endl;
+    }
+
+    return 0;
+}