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