Compilare: main.cpp: In function 'void removeEdge(int, int)': main.cpp:21:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for(int i = 0; i < graph[a].size(); ++i) { | ~~^~~~~~~~~~~~~~~~~ main.cpp:29:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(int i = 0; i < graph[b].size(); ++i) { | ~~^~~~~~~~~~~~~~~~~