Compilare: main.cpp: In function 'bool bfs()': main.cpp:35:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | for(int i = 0; i < edges[curr].size(); ++i){ | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:74:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for(int i = 0; i < edges[2*n+1].size(); ++i){ | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:93:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 93 | for(int j = 1; j < edges[i].size(); ++j){ | ~~^~~~~~~~~~~~~~~~~