Compilare: user.cpp: In function ‘int main()’: user.cpp:12:35: warning: integer overflow in expression [-Woverflow] const long long inf=(1LL<<63)-1; ^ user.cpp:21:5: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Wstrict-overflow] for(i=1; i<=n; i++) ^