Eroare de compilare: user.cpp: In function ‘void read()’: user.cpp:10:17: warning: unused variable ‘x’ [-Wunused-variable] int i,j,sum,x; ^ user.cpp: In function ‘void sol2()’: user.cpp:28:27: error: ‘ULLONG_MAX’ was not declared in this scope unsigned long long p2=ULLONG_MAX/2+1,d; d=p2; bool ok; ^ user.cpp:28:45: error: ‘d’ was not declared in this scope unsigned long long p2=ULLONG_MAX/2+1,d; d=p2; bool ok; ^