Compilare: main.cpp: In function 'int main()': main.cpp:61:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for (int l = 0; l < p.size() - 1; l++) | ~~^~~~~~~~~~~~~~ main.cpp:91:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | for (int t = l + 1; t < p.size(); t++) | ~~^~~~~~~~~~