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 g = readline().split(" ");

var n = Number(g[0]);
var m = Number(g[1]);

var p_x = 0;
var p_y = 0;
for(i=0;i<n;i++){
    
    var k = readline();
    
    var B = k.indexOf("B");
    
    if(B != -1){
        var b = B;
        var side = 1;
        while(k[b] == "B"){
            side++;
            b++;
        }
        
        var point = Math.ceil(side/2);
        p_x = point + B;
        p_y = point + i;
        break;        
    }
}

print(p_y, p_x);


