/in/foo.cc: In function 'int main()':
/in/foo.cc:38:4: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
    if (vis[u]) continue; vis[u]=1,id[++tot]=u;
    ^~
/in/foo.cc:38:26: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
    if (vis[u]) continue; vis[u]=1,id[++tot]=u;
                          ^~~
/in/foo.cc:2:20: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
 #define rep(i,x,y) for (int i=(x);i<=(y);i++)
                    ^
/in/foo.cc:56:3: note: in expansion of macro 'rep'
   rep (i,1,pos) printf("%d ",id[i]),mk[id[i]]=1; puts("");
   ^~~
/in/foo.cc:56:50: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   rep (i,1,pos) printf("%d ",id[i]),mk[id[i]]=1; puts("");
                                                  ^~~~
/in/foo.cc:2:20: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
 #define rep(i,x,y) for (int i=(x);i<=(y);i++)
                    ^
/in/foo.cc:70:3: note: in expansion of macro 'rep'
   rep (i,1,n) if (col[i]==pos) printf("%d ",i); puts("");
   ^~~
/in/foo.cc:70:49: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   rep (i,1,n) if (col[i]==pos) printf("%d ",i); puts("");
                                                 ^~~~