Compilare: main.cpp: In function 'void vizitat(int, int)': main.cpp:16:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for( int i = 0; i < vecini[u].size(); i++ ){ | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:37:13: warning: unused variable 'pret' [-Wunused-variable] 37 | int pret; | ^~~~ main.cpp:53:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for( int i = 1; i < pret_min.size(); i++ ){ | ~~^~~~~~~~~~~~~~~~~