#include <iostream>
#include <fstream>
#include <cstring>
#include <cstdio>
#pragma warning(disable:4996)
using namespace std;

int main() {

	freopen("cifra.in", "r", stdin);
	freopen("cifra.out", "w", stdout);

	int ult[] = {0,1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4,4,5,9,6,2,7,3,6,2,1,1,2,8,1,7,2,8,5,9,8,8,9,3,0,6,1,7,0,6,5,5,6,2,5,1,6,2,9,3,2,2,3,7,4,0,5,1,4,0,9,9,0,6,9,5,0,6,3,7,6,6,7,1,8,4,9,5,8,4,3,3,4,0,3,9,4,0,7,1,0 };
	int n, len, poz;
	char buf[102];
	scanf("%d\n", &n);

	while (n--){
		gets(buf);
		len = strlen(buf);
		poz = 0;
		if (len > 1)
			poz = (buf[len - 2] - '0') * 10;
		poz += buf[len - 1] - '0';
		printf("%d\n", ult[poz]);
	}

	return 0;
}