// Author: HeRaNO
#include "testlib.h"
#define MAXN 305

const int MAX = 1000000;

int a[MAXN][MAXN], b[MAXN][MAXN];

int main(int argc, char *argv[])
{
	registerTestlibCmd(argc, argv);
	int T = inf.readInt();
	for (int cas = 1; cas <= T; cas++)
	{
		int n = inf.readInt();
		int m = inf.readInt();
		for (int i = 1; i < n; i++)
			for (int j = 1; j < m; j++)
				b[i][j] = inf.readInt();

		std::string pans = ouf.readToken("YES|NO");
		std::string jans = ans.readToken();

		if (pans != jans)
			quitf(_wa, "%s is expected in answer, but found %s (case #%d)", jans.c_str(), pans.c_str(), cas);

		if (pans == "NO")
			continue;

		for (int i = 1; i <= n; i++)
			for (int j = 1; j <= m; j++)
				a[i][j] = ouf.readInt(0, MAX), ans.readInt();

		for (int i = 1; i < n; i++)
			for (int j = 1; j < m; j++)
				if (b[i][j] != a[i][j] + a[i][j + 1] + a[i + 1][j] + a[i + 1][j + 1])
					quitf(_wa, "array a does not meet the requirement (case #%d)", i);
	}

	quitf(_ok, "ok");
	return 0;
}