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
var opt = readline().split(' ');
var row = parseInt(opt[0]);
var column = parseInt(opt[1]);
var squareMassive=[];
squareMassive.length = row;

function findCentre(row,column)
{
    for(var i=0;i<row;i++)
    {
        squareMassive[i] = readline();
        var sStart = null;
        var squareLength=0;
        for(var j=0;j<column;j++)
        {
            if (squareMassive[i][j]=='B') {
                var t = j;
                while(squareMassive[i][++t] === 'B');
                var c = (t - j+1) / 2;
                return {
                    row: i + c,
                    column: j + c
                };
            }
        }


    }

}

var result=findCentre(row,column);
print(result.row);
print(result.column)
