#include<bits/stdc++.h>
using namespace std;
int main(){
char a[10][10];
int i, j;
for(i = 0; i < 10; i++){
for(j = 0; j < 10; j++){
cin >> a[i][j];
}
}
int bx, by, lx, ly, rx, ry, res = 0;
for(i = 0; i < 10; i++){
for(j = 0; j < 10; j++){
if(a[i][j] == 'B'){bx = i;by = j; }
if(a[i][j] == 'L'){lx = i;ly = j; }
if((bx == lx && lx == rx) || (by == ly && ly == ry)){
res = abs((ly - by) + (lx - bx) + 1);
}else{
res = abs((ly - by) + (lx - bx) - 1);
}
}
}
cout << res;
}