Compilare: main.cpp: In function 'void dfsinit(int, int)': main.cpp:84:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 84 | for(int i=0;i<v[nod].size();++i) | ~^~~~~~~~~~~~~~ main.cpp: In function 'bool verif(int)': main.cpp:130:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 130 | for(int i=0;i<pzs[a].size();++i) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:211:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 211 | for(j=0;j<vc[i].size();++j) | ~^~~~~~~~~~~~~