#include <bits/stdc++.h>
using namespace std;
 
long a,n;
 
unsigned long long luythua(long x, long p)
{
    if (p == 0) return 1;
    if (p == 1) return x;
 
    if (p%2==0) return (luythua(x,p/2)*luythua(x,p/2))%10;
    return (luythua(x,p/2)*luythua(x,p/2)*x)%10;
}
 
void cstc()
{
    cin >> a >> n;
    cout << luythua(a, n);
}
 
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    // freopen("CSTC.INP","r",stdin);
    // freopen("CSTC.OUT","w",stdout);
 
    cstc();
 
    return 0;
}

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MiAyMDAz

2 2003