Compilare: user.cpp: In function ‘int main()’: user.cpp:22:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(b.size() <= k && i + q <= n) { ^ user.cpp:30:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (b.size() <= k && q > Max) Max = b.size(); ^ user.cpp:33:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (b.size() > k && q >= 0) { ^ user.cpp:47:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(b.size() <= k && i + q <= m) { ^ user.cpp:55:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (b.size() <= k && q > Max) Max = b.size(); ^ user.cpp:58:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (b.size() > k && q >= 0) { ^