Compilare: main.cpp: In function 'int bfs()': main.cpp:34:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for (int i = 0; i < graph[nod].size(); ++ i) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:96:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for (int i = 0; i < graph[dest].size(); ++ i) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:125:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 125 | for (int i = 0; i < edges.size(); ++ i) | ~~^~~~~~~~~~~~~~