#include<iostream>
#include<cstring>
using namespace std;
class M{
public :
    int m[10][10];
};
int n;
M multi(M a, M b){
    M t;
    for(int i = 0; i < n; ++i){
        for(int j = 0; j < n; ++j){
            t.m[i][j] = 0;
            for(int k = 0; k < n; ++k)
                t.m[i][j] = (t.m[i][j] + a.m[i][k] * b.m[k][j]) % 9973;
        }
    }
    return t;
}
M base,ans;
void init(){
    memset(ans.m,0,sizeof(ans.m));
    for(int i=0;i<n;i++){
        ans.m[i][i]=1;
    }
}
int main(){
    int t;cin>>t;
    long long int k=0;
    while(t--){
        cin>>n>>k;
        for(int i=0;i<n;i++){
            for(int j=0;j<n;j++){
                cin>>base.m[i][j];
            }
        }
        init();
        while(k){
            if(k & 1){
                ans = multi(ans, base);
            }
            base = multi(base, base);
            k >>= 1;
        }
        int aw=0;
        for(int i=0;i<n;i++){
            aw+=ans.m[i][i];
            aw=aw%9973;
        }
        cout<<aw<<endl;
    }
return 0;
}