Compilare: main.cpp: In function 'bool bfs()': main.cpp:60:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<muchii>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for(int i = 0; i < v[now].size(); i++) { | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:128:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<muchii>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 128 | for(int i = 0; i < v[dest].size(); i++) { | ~~^~~~~~~~~~~~~~~~ main.cpp:153:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 153 | for(int i = 0; i < s.size(); i++) { | ~~^~~~~~~~~~