Compilare: main.cpp: In function 'int main()': main.cpp:52:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for (int i = 0; i < v.size(); i++) { | ~~^~~~~~~~~~ main.cpp:55:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | for (int i = 1; i <= aux.size(); i++) | ~~^~~~~~~~~~~~~ main.cpp:56:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for (int j =1; j <= aux.size(); j++) | ~~^~~~~~~~~~~~~