// Ω＼ζ°)ﾁｰﾝ Ω＼ζ°)ﾁｰﾝ

#include <iostream>
#include <cstdio>

int main(){
    std::string S, T;
    std::cin >> S >> T;

    while(T.size() < 2){
        T = '0' + T;
    }
    
    int n = S[S.size()-1] - '0', m = (T[T.size()-2]-'0') * 10 + (T[T.size()-1]-'0');

    if(n == 0){
        std::cout << (m == 0 ? 1 : 0) << std::endl;
    }else{
        int res = 1;
        for(int i=0;i<m;i++){
            res = res * n % 10;
        }
        std::cout << res << std::endl;
    }
}