Compilare: main.cpp: In function 'void bfs(int)': main.cpp:30:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | for(int i=0;i<lista[elem].size();i++){ | ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:50:18: warning: unused variable 'sol' [-Wunused-variable] 50 | int t,dmax=1,sol; | ^~~