Compilare: main.cpp: In function 'ld divide(int, int)': main.cpp:45:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for (int i = 0; i < a.size(); i++) | ~~^~~~~~~~~~ main.cpp:46:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for (int j = i + 1; j < a.size() && abs(a[i].second - a[j].second) < dmin; j++) | ~~^~~~~~~~~~