b=[input()for _ in range(int(input().split()[0]))]
X,Y=len(b[0]),len(b)
for i in range(X*Y):
 if b[i//X][i%X]=="R":y,x=i//X,i%X
for i in range(X*Y):
 y,x=(y+1)%Y,(x+1)%X
 if b[y][x]=="#":print((y-1)%Y+1,(x-1)%X+1);break
else:print("loop")