Compilare: main.cpp: In function 'void solve(int, long long int)': main.cpp:63:64: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ((dp[first - 1] <= ULLONG_MAX / dp[n - first]) && k >= dp[first - 1] * dp[n - first]) ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:72:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (; poz < ans.size(); ++poz) ~~~~^~~~~~~~~~~~