#include<stdio.h>
#include<string.h>
int t;
char s[201];
int cif[201];
int uc[]={0,1,4,7,6,5,6,3,6,3};
int main ()
{
    int i,nr,aux;
    freopen("cifra.in","r",stdin);
    freopen("cifra.out","w",stdout);
    scanf("%d\n",&t);
    for(i=1;i<=100;i++)
        cif[i%100]=(cif[i-1]+uc[i%10])%10;

    for(i=1;i<=t;i++)
    {
        gets(s);
        nr=strlen(s);
        if(nr==1)
            aux=s[nr-1]-'0';
        else
            aux=(s[nr-2]-'0')*10+(s[nr-1]-'0');
        printf("%d\n",cif[aux]);
    }
    return 0;
}