View Compilation Error

0_0_38645248_14927.cpp:15:1: error: 'op' does not name a type; did you mean 'mp'?
 op[N];
 ^~
 mp
0_0_38645248_14927.cpp: In function 'void run()':
0_0_38645248_14927.cpp:20:23: error: 'op' was not declared in this scope
  for(int i=0;i<=n;i++)op[i]=0;
                       ^~
0_0_38645248_14927.cpp:20:23: note: suggested alternative: 'mp'
  for(int i=0;i<=n;i++)op[i]=0;
                       ^~
                       mp
0_0_38645248_14927.cpp:34:9: error: 'op' was not declared in this scope
         op[kv.second]++;
         ^~
0_0_38645248_14927.cpp:34:9: note: suggested alternative: 'ok'
         op[kv.second]++;
         ^~
         ok
0_0_38645248_14927.cpp:39:6: error: 'op' was not declared in this scope
   s-=op[f];
      ^~
0_0_38645248_14927.cpp:39:6: note: suggested alternative: 'ok'
   s-=op[f];
      ^~
      ok