/in/foo.cc: In function 'void Work()':
/in/foo.cc:12:18: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
 #define rep(i,n) for(int i=0;i<n;i++)
                  ^
/in/foo.cc:38:5: note: in expansion of macro 'rep'
     rep(i,n)E[i].clear(),Link[i]=-1;int x;
     ^~~
/in/foo.cc:38:37: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
     rep(i,n)E[i].clear(),Link[i]=-1;int x;
                                     ^~~