https://www.codetree.ai/missions/5/problems/l-r-and-b?utm_source=clipboard&utm_medium=text
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arr = [list(input()) for _ in range(10)]
bx,by = 0,0
lx,ly = 0,0
rx,ry = 0,0
for i in range(10):
for j in range(10):
if arr[i][j] == 'B':
bx,by =j,i
elif arr[i][j] == 'L':
lx,ly = j,i
elif arr[i][j] == 'R':
rx,ry = j,i
r = abs(bx-lx)+abs(by-ly)-1
if (ly<ry<by or by<ry<ly) and (lx==rx==bx):
print(r+2)
elif (lx<rx<bx or bx<rx<lx) and (ly==ry==by):
print(r+2)
else:
print(r)