Compilare: user.cpp: In function ‘void Reverse(int, int)’: user.cpp:58:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Intervals.size(); i++) ^ user.cpp:86:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Intervals.size(); i++) ^ user.cpp: In function ‘int Query(int)’: user.cpp:52:1: warning: control reaches end of non-void function [-Wreturn-type] } ^