#include <stdio.h>
#include <string.h>

int last[100] = {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 main()
{
	FILE* fin = fopen("cifra.in", "r");
	FILE* fout = fopen("cifra.out", "w");
	int T;
	fscanf(fin, "%d", &T);
	char N[101];
	for (int i = 0; i < T; i++)
	{
		fscanf(fin, "%s", N);

		int len = strlen(N);
		int n = N[len - 1] - '0';
		if (len > 1)
			n = 10 * (N[len - 2] - '0') + N[len - 1] - '0';

		fprintf(fout,"%d\n", last[n]);
	}
	return 0;
}