Compilare: main.cpp: In function 'long long unsigned int check(int, int)': main.cpp:31:15: warning: comparison of integer expressions of different signedness: 'std::multiset<long long unsigned int, std::greater<long long unsigned int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 31 | if (s.size() < r) | ~~~~~~~~~^~~ main.cpp: In function 'int main()': main.cpp:72:43: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'long long int' [-Wsign-compare] 72 | if (X - step >= 0 && check(X - step, r) >= c) | ~~~~~~~~~~~~~~~~~~~^~~~