View Code of Problem 3696

#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<cctype>
#include<vector>
#include<cmath>
using namespace std;
int main(void){
	long long int n;
 	while(scanf("%lld",&n) != EOF){
 		if(n == 0) printf("1\n");
		else if(n%4 == 1) printf("%lld\n",n%10);
		else if(n%4 == 2) printf("%lld\n",n*n%10);
		else if(n%4 == 3) printf("%lld\n",n*n*n%10); 
		else printf("%lld\n",n*n*n*n%10);
	 }
}