Compilare: main.cpp: In function 'void bell_bin(long long int&, long long int&, int, std::vector<std::pair<int, long long int> >*)': main.cpp:37:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(int i = 0; i < v[nod].size(); i++) { | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:74:9: warning: unused variable 'f' [-Wunused-variable] 74 | int f[n+1], h[n+1]; | ^ main.cpp:74:17: warning: unused variable 'h' [-Wunused-variable] 74 | int f[n+1], h[n+1]; | ^