answer.code:11:8: error: ‘M’ was not declared in this scope
   11 | int in[M],out[M];
      |        ^
answer.code:11:15: error: ‘M’ was not declared in this scope
   11 | int in[M],out[M];
      |               ^
answer.code:15:14: error: ‘M’ was not declared in this scope
   15 | vector<PII>G[M];
      |              ^
answer.code: In function ‘void dfs(int)’:
answer.code:23:11: error: ‘G’ was not declared in this scope
   23 |     while(G[u].size()){
      |           ^
answer.code: In function ‘void MAIN()’:
answer.code:50:13: error: ‘G’ was not declared in this scope
   50 |             G[mp[l]].emplace_back(mq[r],i);
      |             ^
answer.code:51:15: error: ‘in’ was not declared in this scope; did you mean ‘i’?
   51 |             ++in[mp[l]],++out[mq[r]];
      |               ^~
      |               i
answer.code:51:27: error: ‘out’ was not declared in this scope
   51 |             ++in[mp[l]],++out[mq[r]];
      |                           ^~~
answer.code:58:13: error: ‘G’ was not declared in this scope
   58 |             G[mq[l]].emplace_back(mp[r],i+n);
      |             ^
answer.code:59:15: error: ‘in’ was not declared in this scope; did you mean ‘i’?
   59 |             ++in[mq[l]],++out[mp[r]];
      |               ^~
      |               i
answer.code:59:27: error: ‘out’ was not declared in this scope
   59 |             ++in[mq[l]],++out[mp[r]];
      |                           ^~~
answer.code:63:16: error: ‘in’ was not declared in this scope; did you mean ‘i’?
   63 |             if(in[i]!=out[i]){
      |                ^~
      |                i
answer.code:63:23: error: ‘out’ was not declared in this scope
   63 |             if(in[i]!=out[i]){
      |                       ^~~
answer.code:68:32: error: ‘in’ was not declared in this scope; did you mean ‘i’?
   68 |         for(int i=1;i<=cnt;++i)in[i]=out[i]=0,G[i].clear();
      |                                ^~
      |                                i
answer.code:68:38: error: ‘out’ was not declared in this scope
   68 |         for(int i=1;i<=cnt;++i)in[i]=out[i]=0,G[i].clear();
      |                                      ^~~
answer.code:68:47: error: ‘G’ was not declared in this scope
   68 |         for(int i=1;i<=cnt;++i)in[i]=out[i]=0,G[i].clear();
      |                                               ^