Whole submatrix

Problem code: WINDOW2

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After Chef successfully built a modern (L, K)-window on the attic wall he decided to expand the notion of the (L, K)-window in some other areas. Now he considers a rectangular grid that contains only zeroes and ones and has size N x M. He considers the (L, K)-window here as any submatrix of size L x K that contains only ones. Formally he defines (L, K)-window as any (K+L)-tuple (R1, ..., RL, C1, ..., CK) such that 1 <= R1 < ... < RL <= N, 1 <= C1 < ... < CK <= M and A[Ri][Cj]=1 for all 1 <= i <= L, 1<= j <= K. Here A[r][c] is the c-th element of the r-th row of considered rectangular grid.

Why does Chef call some (K+L)-tuple of numbers by the window? Just mark all points (Ri,Cj) (1 <= i <= L, 1<= j <= K) on the plane and join by line segments all pairs of points that has equal abscises or ordinates and you will see that this picture is like a window.

Now Chef considers some particular N x M grid and wants to calculate the total number of (L, K)-windows in this rectangular grid. Help him. Since this number can be very large calculate the result modulo 1000000080798150871.

Input

The first line contains a single positive integer T <= 100, the number of test cases. T test cases follow. The first line of each test case contains four positive integers N, M, L, K, where L, N <= 1000, K, M <=3. Next N lines describe the rectangular grid considered by Chef. Each of these lines contains M symbols. Every symbol is either one or zero.

Output

For each test case, output a single line containing the total number of (L, K)-windows for the given grid modulo 1000000080798150871.

Example

Input:
2
3 2 2 1
11
01
10
3 3 2 2
111
101
111

Output:
2
5

Explanation

In the first case it is just the number of pairs of cells with value 1 that have the same column number.

In the second case we have the following (2, 2)-windows:
(First row, Second row, First column, Third column)
(First row, Third row, First column, Second column)
(First row, Third row, First column, Third column)
(First row, Third row, Second column, Third column)
(Second row, Third row, First column, Third column)

Author: anton_lunyov
Date Added: 15-01-2011
Time Limit: 1 sec
Source Limit: 50000 Bytes
Languages: ADA, ASM, BASH, BF, C, C99 strict, CAML, CLOJ, CLPS, CPP 4.0.0-8, CPP 4.3.2, CS2, D, ERL, F#, FORT, GO, HASK, ICK, ICON, JAR, JAVA, JS, LISP clisp, LISP sbcl, LUA, NEM, NICE, PAS fpc, PAS gpc, PERL, PERL6, PHP, PIKE, PRLG, PYTH, PYTH 3.1.2, RUBY, SCALA, SCM guile, SCM qobi, ST, TCL, TEXT, WSPC


Comments

but the ans will be less than

iiit @ 26 Jan 2011 04:20 PM

but the ans will be less than the number 100000008079...

am i coorect??

iiit @ 26 Jan 2011 04:35 PM

am i coorect??

getting runtime coded in

iiit @ 25 Mar 2011 09:02 PM

getting runtime

coded in python can't fig it out any help!!!! pls

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