#include <iostream>
#include <fstream>
#include <string>

const char IN[] = "cifra.in";
const char OUT[] = "cifra.out";

#define MAXL 101

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

int T;
int N;

using namespace std;

inline void read_data()
{
	freopen(IN, "r", stdin);
	freopen(OUT, "w", stdout);
	scanf("%d\n", &T);
	char s[MAXL];
	while (T--) {
		int len = 0; 
		char buf[2]; 
		char c;
		while ((scanf("%c", &c)) && (c != ' ' && c != '\n')) {
			buf[0] = buf[1];
			buf[1] = c;
			++len;
		}
		int num = buf[1] - '0';
		if (len > 1)
			num += 10 * (buf[0] - '0');
		printf("%d\n", A[num]);
	}
	fclose(stdin);
	fclose(stdout);
}

int main()
{
	//preprocess();
	read_data();
	return 0;
}