#include<fstream.h>
int k[100]={1,5,2,8,3,9,2,8,7,7,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0};
long rasp[100];
char c;
int t,j,ok;
int main()
{ ifstream fin("cifra.in");
ofstream fout("cifra.out");
fin>>t;ok=0;j=0;
while(t>0&&!fin.eof())
{ fin.get(c);
if(c!='\n'&&!fin.eof()){rasp[j++]=c-48;ok=1;}
else if(ok)
{ fout<<k[(rasp[j-2]*10+rasp[j-1])-1]<<'\n';
j=0;t--;
}
}
return 0;
}