#include <fstream>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
using namespace std;
ifstream f("cifra.in");
ofstream g("cifra.out");
int v[] = {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};
char n[110];
int main()
{int t,i;
f>>t;
for(i=1;i<=t;i++)
{f.get();
f.get(n,110);
int L=strlen(n);
char last2[110];
if(L>2)
strcpy(last2,n-1);
else
strcpy(last2,n);
int nr=atoi(last2);
g<<v[nr]<<"\n";
}
return 0;
}