Compilare: main.cpp: In function 'void df(int, int)': main.cpp:18:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();++i) ~^~~~~~~~~~~~~~ main.cpp: In function 'int comp(query, query)': main.cpp:28:29: warning: suggest parentheses around '&&' within '||' [-Wparentheses] return a.x<b.x||a.x==b.x&&a.y<b.y; ~~~~~~~~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:45:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=1;i<=dim+1;i++) ^~~ main.cpp:49:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(i=1;i<=q;i++) ^~~