View Code of Problem 3696

#include<iostream>
#include<cstring>
//#include<algorithm>
using namespace std;
int main(){
	int n;
	while(~scanf("%d",&n)){
		int t = 1;
		for(int i = 0;i<n;i++){
			t = t * n;
			t = t % 10;
		}
		cout<<t<<endl;
	}
	return 0;
}