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#include <iostream>
#include <fstream>
#include <math.h>
#include <bits/stdc++.h>
using namespace std;
ifstream in("cifra.in");
ofstream out("cifra.out");
int Uc(int k){
if(k < 10){
return k;
}else{
return(k % 10);
}
}
long long int calc(int k){
long long int sum = 0 ;
for(int i = 1; i <= k ; i ++){
sum += pow(i,i);
}
return Uc(sum);
}
long long int T;
void citire(){
in>>T;
for(int i = 1 ; i <= T; i ++){
in>>i;
}
}
int main()
{ citire();
for(int i = 1; i <= T; i++){
cout<<calc(i)<<"\n";
}
return 0;
}