'commit'

TangDou/XiTi/1458.cpp

@@ -0,0 +1,24 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int arr[1001] = {0};
+
+int main() {
+    int n, m;
+    cin >> n >> m;
+    bool flag = false;
+    for (int i = 1; i <= m; i++) {
+        int a;
+        cin >> a;
+        if (arr[a] == 0) arr[a] = 1;
+        else {
+            arr[a]++;
+            cout << "yes" << endl;
+            flag = true;
+            break;
+        }
+    }
+    if (!flag)cout << "no" << endl;
+    return 0;
+}