Compilare: main.cpp: In function 'void bfs(int)': main.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for (i = 0; i < conex[x].size(); i++) | ~~^~~~~~~~~~~~~~~~~ main.cpp:16:12: warning: unused variable 'j' [-Wunused-variable] 16 | int i, j, x; | ^ main.cpp: In function 'int main()': main.cpp:36:34: warning: unused variable 'minim' [-Wunused-variable] 36 | long long int n, m, i, j, k, minim = 0, nr, s; | ^~~~~ main.cpp:36:45: warning: unused variable 'nr' [-Wunused-variable] 36 | long long int n, m, i, j, k, minim = 0, nr, s; | ^~