Compilare: user.cpp: In function ‘int main()’: user.cpp:16:72: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (!dq.empty() && note[i] > dq.back() && dq.size() + n-i > m) ^ user.cpp:22:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < dq.size(); ++i) ^ user.cpp:7:18: warning: variable ‘len’ set but not used [-Wunused-but-set-variable] int i, n, m, len; ^