Compilare: main.cpp: In function 'void bfs(const std::vector<std::vector<Edge> >&, int, std::vector<std::pair<int, int> >&)': main.cpp:31:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for (int i = 0; i < queue.size(); ++i) | ~~^~~~~~~~~~~~~~ main.cpp:34:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for (int j = 0; j < graph[node].size(); ++j) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:76:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 76 | for (auto i = 0; i < sinkParents.size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~