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#include<fstream>
#include<cmath>
using namespace std;
ifstream fin("cifra.in");
ofstream fout("cifra.out");
unsigned long long n,i,j,w,s,t,sol1,sol2,solf,v[30],x;
int main(){
fin>>t;
v[1]=1;
v[2]=4;
v[3]=7;
v[4]=6;
v[5]=5;
v[6]=6;
v[7]=3;
v[8]=6;
v[9]=9;
v[10]=0;
v[11]=1;
v[12]=6;
v[13]=3;
v[14]=6;
v[15]=5;
v[16]=6;
v[17]=7;
v[18]=4;
v[19]=9;
v[20]=0;
for(i=1;i<=t;i++){
fin>>n;
solf=0;
sol2=n%100;
for(w=1;w<=sol2;w++){
x=w%20;
solf+=v[x];
solf%=10;
}
fout<<solf<<"\n";
}
return 0;
}