#include <bits/stdc++.h>
using namespace std;
int pic[610][610];
int ABS(int x) {
  if (x < 0) return -x;
  return x;
}
int main(int argc, char const *argv[]) {
  int q;
  scanf("%d", &q);
  for (int i = 0; i < q; i++) {
    int n, m, pix = 0, sum1 = 0, sum2 = 0;
    scanf("%d%d", &n, &m);
    for (int k = 0; k < n; k++)
      for (int j = 0; j < m; j++) {
        scanf("%d", &pic[k][j]);
      }
    int dif = 0;
    for (int j = 0; j < m; j++)
      dif = dif + ABS(pic[n / 2][j] - pic[n / 2 - 1][j]);
    if (dif < 6000)
      printf("NO\n");
    else
      printf("YES\n");
  }
  return 0;
}
