Compilare: user.cpp: In function ‘int main()’: user.cpp:21:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(dq.size()-1>=X&&dq.size()-1<=Y&&dq.size()-1>max_lg) ~~~~~~~~~~~^~~ user.cpp:21:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(dq.size()-1>=X&&dq.size()-1<=Y&&dq.size()-1>max_lg) ~~~~~~~~~~~^~~ user.cpp:21:58: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(dq.size()-1>=X&&dq.size()-1<=Y&&dq.size()-1>max_lg) ~~~~~~~~~~~^~~~~~~ user.cpp:31:32: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(Min=30001) dq.pop_front(),lg--; ^