#include <bits/stdc++.h>
//define
#define yes (cout<<"Yes"<<endl)
#define no (cout<<"No"<<endl)
#define ll long long
#define str string
using namespace std;
int inf=2000000000;


int main(){
vector<int> a={7,3,9,4,5,6,1,2,8,0};
int n;cin>>n;
cout<<a[n-1]<<endl;
}