Compilare: main.cpp: In function 'void bfs(int)': main.cpp:22:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(int i = 0; i < v[fr].size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:52:18: warning: overflow in conversion from 'double' to 'long long int' changes value from '-1.0e+22' to '-9223372036854775808' [-Woverflow] 52 | maxim1 = -1e22; | ^~~~~