#include <bits/stdc++.h>

using namespace std;

int fp(int a,int b)
{
    int fpb = 0;
    if (b == 1)
    {
        return a;
    }
    else if (b % 2 == 0)
    {
        fpb = (fp(a, b / 2)) % 10000;
        return fpb * fpb % 10000;
    }
    else if (b % 2 == 1)
    {
        fpb = (fp(a, b / 2)) % 10000;
        return (fpb * fpb % 10000) * a % 10000;
    }
}

int main()
{
    int n;
    cin >> n;
    int a[n], b[n], ans[n];
    for (int i = 0; i < n; i++)
    {
        cin >> a[i] >> b[i];
        ans[i] = 0;
        for(int j = 0; j <= a[i] ;j++){
            ans[i] += fp(j, b[i]);
        }
        
    }
    for(int i = 0; i < n; i++){
        cout << ans[i] << endl;
    }

    return 0;
}