Compilare: user.cpp: In function 'void update(int, int)': user.cpp:33: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int cautare(long long int)': user.cpp:45: warning: comparison between signed and unsigned integer expressions user.cpp:47: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:82: warning: overflow in implicit constant conversion