Compilare: main.cpp: In function 'int main()': main.cpp:38:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for(i = 0; i < pit.size(); i++){ | ~~^~~~~~~~~~~~ main.cpp:42:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for(i = 1; i <= aux.size(); i++){ | ~~^~~~~~~~~~~~~ main.cpp:43:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for(j = 1; j <= aux.size(); j++){ | ~~^~~~~~~~~~~~~