#include <bits/stdc++.h>
using namespace std;
int main() {
long long n;
cin >> n;
cout << 10 - n << '\n';
return 0;
}
I2luY2x1ZGUgPGJpdHMvc3RkYysrLmg+CnVzaW5nIG5hbWVzcGFjZSBzdGQ7CgppbnQgbWFpbigpIHsKICAgIGxvbmcgbG9uZyBuOwogICAgY2luID4+IG47CiAgICBjb3V0IDw8IDEwIC0gbiA8PCAnXG4nOwogICAgcmV0dXJuIDA7Cn0K