Submatrices

3000ms

262144K

Description:

You are given matrix $$$s$$$ that contains $$$n$$$ rows and $$$m$$$ columns. Each element of a matrix is one of the $$$5$$$ first Latin letters (in upper case).

For each $$$k$$$ ($$$1 \le k \le 5$$$) calculate the number of submatrices that contain exactly $$$k$$$ different letters. Recall that a submatrix of matrix $$$s$$$ is a matrix that can be obtained from $$$s$$$ after removing several (possibly zero) first rows, several (possibly zero) last rows, several (possibly zero) first columns, and several (possibly zero) last columns. If some submatrix can be obtained from $$$s$$$ in two or more ways, you have to count this submatrix the corresponding number of times.

Input:

The first line contains two integers $$$n$$$ and $$$m$$$ ($$$1 \le n, m \le 800$$$).

Then $$$n$$$ lines follow, each containing the string $$$s_i$$$ ($$$|s_i| = m$$$) — $$$i$$$-th row of the matrix.

Output:

For each $$$k$$$ ($$$1 \le k \le 5$$$) print one integer — the number of submatrices that contain exactly $$$k$$$ different letters.

Sample Input:

2 3
ABB
ABA

Sample Output:

9 9 0 0 0

Sample Input:

6 6
EDCECE
EDDCEB
ACCECC
BAEEDC
DDDDEC
DDAEAD

Sample Output:

56 94 131 103 57

Sample Input:

3 10
AEAAEEEEEC
CEEAAEEEEE
CEEEEAACAA

Sample Output:

78 153 99 0 0

Informação

Provedor Codeforces

Código CF1533H