h,w=map(int,input().split())
s=[input() for _ in range(h)]
f=1
for i in range(h):
 for j in range(w):
  if s[i][j]=='R':
   I=i
   J=j
for i in range(h*w):
 I=(I+1)%h
 J=(J+1)%w
 if s[I][J]=='#':
  print((I-1+h)%h+1,(J-1+w)%w+1)
  f=0
if f:print("loop")