Eroare de compilare: user.cpp:3:1: error: ‘ll’ does not name a type ll a,b; ^ user.cpp:4:1: error: ‘ll’ does not name a type ll sol(ll x) ^ user.cpp: In function ‘int main()’: user.cpp:14:10: error: ‘a’ was not declared in this scope fin>>a>>b; ^ user.cpp:14:13: error: ‘b’ was not declared in this scope fin>>a>>b; ^ user.cpp:15:16: error: ‘sol’ was not declared in this scope fout<<sol(b)-sol(a-1)<<endl; ^