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):
 if b[y:=y+1][x:=x+1]=="#":print(y,x);break
 y,x=y%Y,x%X
else:print("loop")