Compilare: main.cpp: In function 'int bfs(int, int)': main.cpp:40:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for (int i=0; i<path.size() - 1; i++) { | ~^~~~~~~~~~~~~~~~ main.cpp:45:18: 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<path.size() -1; i++) { | ~^~~~~~~~~~~~~~~ main.cpp:51:1: warning: control reaches end of non-void function [-Wreturn-type] 51 | } | ^