R=range
I=input
O=print
H,W=map(int,I().split())
S=[I()for i in R(H)]
for i in R(H):
	for j in R(W):
		if S[i][j]=='R':
			for L in R(H*W):
				s,t=(i+L)%H,(j+L)%W
				if S[s][t]=='#':exit(O([H,s][s>0],[W,t][t>0]))
O("loop")