Compilare: main.cpp: In function 'int main()': main.cpp:41:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (int edge1 = 0; edge1 < edges.size(); edge1++) { | ~~~~~~^~~~~~~~~~~~~~ main.cpp:42:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for (int edge2 = edge1 + 1; edge2 < edges.size(); edge2++) { | ~~~~~~^~~~~~~~~~~~~~