Compilare: main.cpp: In function 'int main()': main.cpp:49:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for (int i = 1; i < vl.size(); i++) | ~~^~~~~~~~~~~ main.cpp:55:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | for (int i = 1; i < vc.size(); i++) | ~~^~~~~~~~~~~ main.cpp:78:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | if (ll + pas < vl.size() and (vl[ll + pas].first < col or (vl[ll + pas].first == col and vl[ll + pas].second <= st))) | ~~~~~~~~~^~~~~~~~~~~ main.cpp:85:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | if (dd + pas < vl.size() and (vl[dd + pas].first < col or (vl[dd + pas].first == col and vl[dd + pas].second <= dr))) | ~~~~~~~~~^~~~~~~~~~~ main.cpp:102:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 102 | if (ll + pas < vc.size() and (vc[ll + pas].first < lin or (vc[ll + pas].first == lin and vc[ll + pas].second <= st))) | ~~~~~~~~~^~~~~~~~~~~ main.cpp:109:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 109 | if (dd + pas < vc.size() and (vc[dd + pas].first < lin or (vc[dd + pas].first == lin and vc[dd + pas].second <= dr))) | ~~~~~~~~~^~~~~~~~~~~