/*
#include <iostream>
#include <fstream>
#include <cstdio>
#include <string>*/
#include <stdio.h>
#include <string.h>
//using namespace std;
char ttt[100];
int T,N;

int cif[100] = {1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4,4,5,9,6,2,7,3,6,2,1,1,2,8,1,7,2,8,5,9,8,8,9,3,0,6,1,7,0,6,5,5,6,2,5,1,6,2,9,3,2,2,3,7,4,0,5,1,4,0,9,9,0,6,9,5,0,6,3,7,6,6,7,1,8,4,9,5,8,4,3,3,4,0,3,9,4,0,7,1,0,0};

int main() {
	int i,res,p;
	
	freopen("cifra.in","r",stdin);
	freopen("cifra.out","w",stdout);
	
	/*
	fin >> T;
	fin.getline(ttt,100);
	*/
	scanf("%d\n",&T);
	for (;T;T--) {
		//memset(ttt,0,sizeof(ttt));
		//fin.getline(ttt,100
		gets(ttt);
		res = 0;
		i = strlen(ttt);
		p = ttt[i-1] - '0';
		if (i > 1) p = (ttt[i-2] - '0') * 10 + p;
		res = cif[p-1];
		//fout << res << endl;
		printf("%d\n",res);
	}
	/*
	fin.close();
	fout.close();
	*/
	fclose(stdin);
	fclose(stdout);
	return 0;
}