绝对正确！！

#include<bits/stdc++.h>
using namespace std;

int main(){
int n;
cin >> n;
char arr[1001][1001];
for(int i = 1; i <= n; i++){
for(int j = 1; j <= n; j++){
cin >> arr[i][j];

	}
} 
for(int i = 1; i <= n; i++){
	for(int j = 1; j <= n; j++){
		if(arr[i][j] == 'W' && arr[j][i] == 'W'){
			cout << "incorrect";
			return 0;
		}else if(arr[i][j] == 'L' && arr[j][i] == 'L'){
			cout << "incorrect"; 
			return 0;
		}else if(arr[i][j] == 'D' && arr[j][i] != 'D'){
			cout << "incorrect"; 
			return 0;
	    }
    }
}
cout <<"correct";
return 0;

}