#include <bits/stdc++.h>
using namespace std;
int n, k, d[10];
void work() {
    cin >> n >> k;
    while(n != 0 && k) {
        int x = n;
        n = 0;
        while(x) n += d[x % 10], x /= 10;
        k --;
    }
    if(n == 0 && k % 2) n = 1;
    cout << n << '\n';
}
signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int Case = 1;
    cin >> Case;
    d[0] = d[4] = d[6] = d[9] = 1;
    d[8] = 2;
    while(Case --) work();
    return 0;
}