#include <stdio.h>
#include <cstring>
#include <string>
using namespace std;
FILE* f, * g;
int v[1002] = { 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 };
///ultima cifra a sumelor se repeta din 100 in 100 de termeni
///de ex u(1^1+...+98^98)=1, adica 100%98=98, adica v[98] care e egal cu 1;
char c[202];
int main()
{
int m, n, i, nr, lg;
f = fopen("cifra.in", "r");
g = fopen("cifra.out", "w");
fscanf(f, "%d", &m);
for (i = 1;i <= m;i++)
{
fscanf(f, "%s", &c);
lg = strlen(c);
if (lg == 1)
{
nr = c[0] - '0';
fprintf(g, "%d\n", v[nr]);
}
else
{
lg--;
nr = (c[lg] - '0') + (c[lg - 1] - '0') * 10;
fprintf(g, "%d\n", v[nr]);
}
}
fclose(f);
fclose(g);
return 0;
}