Compilare: user.cpp: In function ‘int main()’: user.cpp:23:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (x>last&&v.size()+n-i>=m) ^ user.cpp:25:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (!v.empty()&&v.size()+n-i>=m&&x>last) ^ user.cpp:34:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (v.size()<m) { ^