func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, x, i, a[200], s1, s2, j = 2;   string can =  YES ;   int main() {     cin >> n;     cin >> x;     x = 7 - x;     for (i = 0; i < n * 2; i++) {       cin >> a[i];     }     for (i = 1; i < n; i++) {       s1 = a[j];       s2 = a[j + 1];       if (x == s1 || x == s2 || x == 7 - s2 || x == 7 - s1) {         can =  NO ;         break;       }       j += 2;     }     cout << can;   }   