1033  Rectangles
Time Limit : 20 Second
Memory Limit : 128 MB
Submission: 66
Solved: 19
 Description
 There are two Integer Rectangles, a bigger one and a smaller one. Your work is to tell me how many subrectangles in the bigger rectangle that equals the smaller rectangle.
 Input
 There are multiply test cases. For each test case, the format of that case is below:
In the first Line, there are four Integers: R,C,r and c(0<R,C<=2000,0<r,c<=1000,r<=R and c<=C).
The next R lines described the bigger rectangle, for each line there are C Integers.
The next r lines described the smaller rectangle, for each line there are c Integers.
All the Integers in the Rectangles are nonnegtive and smaller than 10000.
 Output
 For each test case, output the answer for a line.
 sample input

4 4 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 4 3 2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1
 sample output

9 2
 hint
 source
 Wang Liangjing