Compilare: main.cpp: In function 'int main()': main.cpp:34:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for (int p = 0; p < mars.size(); ) { | ~~^~~~~~~~~~~~~ main.cpp:42:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | while (p < mars.size() && mars[p].first == i) { | ~~^~~~~~~~~~~~~