Compilare: main.cpp: In function 'void ff(int, long long int)': main.cpp:26:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for( i = 0; i < v[nod].cop.size(); i++ ) { | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:67:20: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long long int' [-Wformat=] 67 | fprintf( fout, "%d", rez ); | ~^ ~~~ | | | | int long long int | %lld