func_code_string: #include <bits/stdc++.h>   using namespace std;   string board[8];   int main() {     for (int i = 0; i < 8; ++i) cin >> board[i];     const char* s =  WB ;     for (int i = 0; i < 8; ++i) {       int c = board[i][0] ==  B ;       for (int j = 1; j < 8; ++j) {         if (board[i][j] != s[(c + j) % 2]) {           cout <<  NO n ;           return 0;         }       }     }     cout <<  YES n ;     return 0;   }   