#include<stdio.h>
#include<string.h>
#define Nmax 102

int sol[]={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[Nmax];

void citire();
void rezolva();

int main(){
    citire();
    return 0;
}

void citire(){
int w,t;
     freopen("cifra.in","r",stdin);
     freopen("cifra.out","w",stdout);
     scanf("%d",&t);
     for (w=1;w<=t;w++){
         scanf("%s",&n);
         rezolva();
     }
}

void rezolva(){
     if (strlen(n)>1)
        printf("%d\n",sol[(n[strlen(n)-2]-'0')*10+(n[strlen(n)-1]-'0')]);
     else
         printf("%d\n",sol[n[strlen(n)-1]-'0']);
}