Compilare: main.cpp: In function 'int main()': main.cpp:29:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(i=0;i<bucket[ind].size();i++){ | ~^~~~~~~~~~~~~~~~~~~ main.cpp:31:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for(j=0;j<v[nod].size();j++) | ~^~~~~~~~~~~~~~