View Compilation Error

0_0_39074208_20147.cpp: In function 'bool check(int)':
0_0_39074208_20147.cpp:55:29: error: 's' was not declared in this scope
   55 |                         if((s&i)==s) return 1;
      |                             ^
0_0_39074208_20147.cpp:59:72: error: 's' was not declared in this scope
   59 |                                         if(mp[a[k].x][a[k].y]=='G') dp[s|(1<<k)][k]=val;
      |                                                                        ^
0_0_39074208_20147.cpp:60:49: error: 's' was not declared in this scope
   60 |                                         else dp[s|(1<<k)][k]=dp[i][j]-dis[j][k];
      |                                                 ^