View Code of Problem 3696

#include<iostream>
using namespace std;
#include<string>
#include<cmath>
int main()
{
	int n;
	while (cin >> n)
	{
		string str = to_string((int)pow(n, n));          //pow返回的是double类型
		cout << str[str.size() - 1] << endl;
	}
}