HDOJ 1097

题目范围是0<a,b<=2^30 ，要注意N次方后数值太大。

 

#include <iostream>
using namespace std;

int main()
{
    int a,b;
    int s[10][4]={{0,0,0,0},{1,1,1,1},{6,2,4,8},{1,3,9,7},{6,4,6,4},{5,5,5,5},{6,6,6,6},{1,7,9,3},{6,8,4,2},{1,9,1,9}};

    while(cin>>a>>b)
    {
        cout<<s[a%10][b%4]<<endl;
    }
}