Compilare: user.cpp: In function ‘long long unsigned int update(int, int, long long unsigned int, int, int, int)’: user.cpp:16:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < LazyAINT[k].size(); ++i) ^ user.cpp:22:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < LazyAINT[k].size(); ++i) ^ user.cpp: In function ‘long long unsigned int query(int, int, int, int, int)’: user.cpp:62:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < LazyAINT[k].size(); ++i) ^ user.cpp:68:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < LazyAINT[k].size(); ++i) ^ user.cpp: In function ‘long long unsigned int update(int, int, long long unsigned int, int, int, int)’: user.cpp:53:1: warning: control reaches end of non-void function [-Wreturn-type] } ^