Consider a table of size n × m, initially fully white. Rows are numbered 1 through n from top to bottom, columns 1 through m from left to right. Some square inside the table with odd side length was painted black. Find the center of this square.

Input

The first line contains two integers n and m (1 ≤ n, m ≤ 115) — the number of rows and the number of columns in the table.

The i-th of the next n lines contains a string of m characters s_{i1} s_{i2} … s_{im} (s_{ij} is 'W' for white cells and 'B' for black cells), describing the i-th row of the table.

Output

Output two integers r and c (1 ≤ r ≤ n, 1 ≤ c ≤ m) separated by a space — the row and column numbers of the center of the black square.

Examples

Input

5 6
WWBBBW
WWBBBW
WWBBBW
WWWWWW
WWWWWW


Output

2 4


Input

3 3
WWW
BWW
WWW


Output

2 1
def procura(matriz):
    contadorAltura = 0
    for i in matriz:
        for j in i:
            if j == "B":
                contadorAltura += 1
                break
    contadorLargura = 0
    aux = True
    for i in matriz:
        for j in i:
            if j == "B":
                aux = False
                contadorLargura += 1
        if not aux:
            break
    
    for i in range(len(matriz)):
        for j in range(len(matriz[i])):
            if matriz[i][j] == "B":
                return [ i + contadorAltura//2, j + contadorLargura // 2]






altura, largura = map(int, input().split())
matriz = []
for i in range(altura):
    matriz.append(input())

saida = procura(matriz)
print(saida[0] + 1, saida[1] + 1)
