Given a matrix M[][], the task is to check if the sum of i-th row is equal to the sum of i-th column or not.

Input:
The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. Each test case consists of two lines. First line of each test case contains two integers R and C and the second line contains R*C space separated matrix elements.

Output:
For each test case, if sums are equal for one or more rows and column, print "Yes" else print "No".

Constraints:
1<=T<=100
1<=R,C<=500
0<=M[][]<=10³

Example:
Input:
2
4 4
1 2 3 4 9 5 3 1 0 3 5 6 0 4 5 6
3 3
1 2 3 1 2 3 1 1 3

Output:
Yes
No

** For More Input/Output Examples Use 'Expected Output' option **