Compilare: main.cpp: In function 'int main()': main.cpp:81:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for (int i = 0; i < ciclu_edges.size(); ++i) { | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:89:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for (int i = pos + 1; i < ciclu_edges.size(); ++i) { | ~~^~~~~~~~~~~~~~~~~~~~