/in/foo.cc: In function 'll dfs(int, ll)':
/in/foo.cc:42:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if (u==T||!tot) return tot;ll tto=0;
  ^~
/in/foo.cc:42:29: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
  if (u==T||!tot) return tot;ll tto=0;
                             ^~
/in/foo.cc: In function 'void buildedge(ll)':
/in/foo.cc:66:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for (int i=1;i<=T;i++) head[i]=0;ce=1;
  ^~~
/in/foo.cc:66:35: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  for (int i=1;i<=T;i++) head[i]=0;ce=1;
                                   ^~