/in/foo.cc:10:10: error: 'MAXN' was not declared in this scope
 bool inQ[MAXN];
          ^~~~
/in/foo.cc:15:4: error: 'MAXM' was not declared in this scope
 }e[MAXM << 1];
    ^~~~
/in/foo.cc:19:4: error: 'MAXN' was not declared in this scope
 }v[MAXN];
    ^~~~
/in/foo.cc:21:5: error: redefinition of 'int N'
 int N;
     ^
/in/foo.cc:9:5: note: 'int N' previously declared here
 int N, S, T, now, K;
     ^