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#include <iostream>
#include <fstream>
using namespace std;
ifstream f("cifra.in");
ofstream g("cifra.out");
int cifra(int n)
{
int x,i,p,s,j,r;
s=0;
for(i=1;i<=n;i++)
{
for(j=1;j<=i;j++)
{
p=1;
x=i;
while(x>0)
{
p=p*i;
x--;
}
}
s=s+p;
}
r=s%10;
return r;
}
int main()
{
int t,i;
long int n;
f>>t;
for(i=1;i<=t;i++)
{
f>>n;
g <<cifra(n)<<' ';
}
return 0;
}