变量定义尽量不要和全局的函数如max min swap find等冲突，否则调用容易冲突

F.cpp

@@ -7,18 +7,18 @@ int main(){
 			cin >> a[i][j];
 		}
 	}
-	int max = a[0][0];
+	int Max = a[0][0];
 	int r = 0, c = 0;
 	for(int i = 0; i < 3; i++){
 		for(int j = 0; j < 4; j++){
-			if(a[i][j] > max){
-				max = a[i][j];
+			if(a[i][j] > Max){
+				Max = a[i][j];
 				r = i;
 				c = j;
 			}
 		}
 	}
-	cout << max << endl;
+	cout << Max << endl;
 	cout << c+1 << endl;
 	cout << r+1 << endl;
 	return 0;