Match

There is a matrix of size n*n whose elements are either 0 or 1. Now your task is to find out that given a matrix of size m*m whose elements are also 0 or 1 whether it is a sub-matrix of the previous matrix.

There is a matrix of size n*n whose elements are either 0 or 1. Now your task is to find out that given a matrix of size m*m whose elements are also 0 or 1 whether it is a sub-matrix of the previous matrix.

If the second matrix is a sub-matrix of the first one, print “Yes” on a single line. Otherwise print “No”.

4 2
0 0 0 1
0 1 0 1
1 0 1 0
0 0 0 0
1 0
0 0
3 2
0 0 1
0 1 0
1 0 0
0 0
1 1

Yes
No

2010 ACM-ICPC Multi-University Training Contest（10）——Host by HEU