answer.code:2:1: error: ‘L’ does not name a type
    2 | L qmi(L x,int k){
      | ^
answer.code:12:10: error: ‘N’ was not declared in this scope
   12 | bool vis[N],ch[N];
      |          ^
answer.code:12:16: error: ‘N’ was not declared in this scope
   12 | bool vis[N],ch[N];
      |                ^
answer.code: In function ‘void dfs1(int)’:
answer.code:17:8: error: ‘vis’ was not declared in this scope
   17 |     if(vis[i^1])return ans=0,void();
      |        ^~~
answer.code:18:8: error: ‘vis’ was not declared in this scope
   18 |     if(vis[i])return;
      |        ^~~
answer.code:20:5: error: ‘vis’ was not declared in this scope
   20 |     vis[i]=1;
      |     ^~~
answer.code:22:17: error: ‘ft’ was not declared in this scope
   22 |     for(int col:ft[u]){
      |                 ^~
answer.code: In function ‘void dfs2(int)’:
answer.code:27:8: error: ‘ch’ was not declared in this scope; did you mean ‘cc’?
   27 |     if(ch[col])return ans=0,void();
      |        ^~
      |        cc
answer.code:28:5: error: ‘ch’ was not declared in this scope; did you mean ‘cc’?
   28 |     ch[col]=1;
      |     ^~
      |     cc
answer.code:29:15: error: ‘e’ was not declared in this scope
   29 |     for(int u:e[col]){
      |               ^
answer.code: In function ‘void solve()’:
answer.code:35:26: error: ‘e’ was not declared in this scope
   35 |     for(int i=1;i<=m;++i)e[i].clear(),vis[i]=0,ch[i]=0;
      |                          ^
answer.code:35:39: error: ‘vis’ was not declared in this scope
   35 |     for(int i=1;i<=m;++i)e[i].clear(),vis[i]=0,ch[i]=0;
      |                                       ^~~
answer.code:35:48: error: ‘ch’ was not declared in this scope; did you mean ‘cc’?
   35 |     for(int i=1;i<=m;++i)e[i].clear(),vis[i]=0,ch[i]=0;
      |                                                ^~
      |                                                cc
answer.code:36:26: error: ‘ft’ was not declared in this scope
   36 |     for(int i=1;i<=n;++i)ft[i].clear();
      |                          ^~
answer.code:37:5: error: ‘cin’ was not declared in this scope
   37 |     cin>>n>>m;
      |     ^~~
answer.code:39:21: error: ‘s’ was not declared in this scope
   39 |         scanf("%s",(s+1));
      |                     ^
answer.code:39:9: error: ‘scanf’ was not declared in this scope
   39 |         scanf("%s",(s+1));
      |         ^~~~~
answer.code:43:27: error: ‘puts’ was not declared in this scope
   43 |                 if(cnt>m){puts("0");return;}
      |                           ^~~~
answer.code:44:17: error: ‘ft’ was not declared in this scope
   44 |                 ft[i*2].push_back(j);
      |                 ^~
answer.code:47:17: error: ‘e’ was not declared in this scope
   47 |                 e[j].push_back(i*2);
      |                 ^
answer.code:54:12: error: ‘vis’ was not declared in this scope
   54 |         if(vis[i*2]==0&&vis[i*2+1]==0)cc=0,dfs1(i*2);
      |            ^~~
answer.code:56:5: error: ‘cout’ was not declared in this scope
   56 |     cout<<ans*qmi(2,cc)<<endl;
      |     ^~~~
answer.code:56:15: error: ‘qmi’ was not declared in this scope
   56 |     cout<<ans*qmi(2,cc)<<endl;
      |               ^~~
answer.code:56:26: error: ‘endl’ was not declared in this scope
   56 |     cout<<ans*qmi(2,cc)<<endl;
      |                          ^~~~
answer.code: In function ‘int main()’:
answer.code:61:5: error: ‘cin’ was not declared in this scope
   61 |     cin>>T;
      |     ^~~