路边骗局-----尼姆博弈（奇异状态：异或值为0）

B.cpp

@@ -0,0 +1,17 @@
+#include <bits/stdc++.h>
+using namespace std;
+int main(){
+    int n;
+    cin >> n;
+    int sum = 0;
+    int x;
+    for(int i = 1; i <= n; i++){
+        cin >> x;
+        sum ^= x;
+    }
+    if(sum){
+        cout << "Yes" << endl;
+    }else{
+        cout << "No" << endl;
+    }
+}