/in/foo.cc: In function 'int main()':
/in/foo.cc:27:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=0;j<toNode[i].size();j++)
               ~^~~~~~~~~~~~~~~~~
/in/foo.cc:27:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   for(int j=0;j<toNode[i].size();j++)
   ^~~
/in/foo.cc:29:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
    putchar('\n');
    ^~~~~~~