Compilare: main.cpp: In function 'void bfs1(int)': main.cpp:26:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for(int i = 0 ; i < G[now].size() ; ++i){ | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void bfs2()': main.cpp:45:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for(int i = 0 ; i < GT[now].size() ; ++i) | ~~^~~~~~~~~~~~~~~~