View Compilation Error

0_0_38743457_9753.cpp: In function 'void topsort()':
0_0_38743457_9753.cpp:26:21: error: 'in' was not declared in this scope; did you mean 'i'?
   26 |                 if(!in[i]) q.push(i),cnt--;
      |                     ^~
      |                     i
0_0_38743457_9753.cpp:34:25: error: 'in' was not declared in this scope; did you mean 'i'?
   34 |                         in[e[i].to]--;
      |                         ^~
      |                         i
0_0_38743457_9753.cpp:38:44: error: 'kk' was not declared in this scope
   38 |                                 if(cnt==0) kk=1,cout<<e[i].to-1<<endl;
      |                                            ^~
0_0_38743457_9753.cpp: In function 'int main()':
0_0_38743457_9753.cpp:58:25: error: 'in' was not declared in this scope; did you mean 'i'?
   58 |                         in[y+1]++;
      |                         ^~
      |                         i