Compilare: main.cpp: In function 'int exista(std::vector<std::pair<int, int> >&, int)': main.cpp:14:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(int i=0; i<h.size(); i++){ | ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:42:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for(int i=0; i<v.size(); i++){ | ~^~~~~~~~~