#include <bits/stdc++.h>
using namespace std;
const int num[10][10] = {{1,0},{1,1},{4,2,4,8,6},{4,3,9,7,1},{2,4,6},{1,5},{1,6},{4,7,9,3,1},{4,8,4,2,6},{2,9,1}};
int ps(int a,int b,int m)
{
    int s = 1;
    a %= m;
    while(b > 0)
    {
        if(b & 1)
        {
            s *= a;
            s %= m;
        }
        a *= a;
        a %= m;
        b >>= 1;
    }
    return s;
}
int a,b,c,ans = 1;
int main()
{
    cin >> a >> b >> c;
    a %= 10;
    long long e = (e - 1) % num[a][0] + 1;
    cout << num[a][e];
}

WA，样例都过了。。。