#include <bits/stdc++.h>
using namespace std;

int main(){
	int h,w;
	cin >> h >> w;
	
	vector<string> MAP(h);
	
	for (int i=0;i<h;i++){
		cin>>MAP[i];
	}
	
	int x,y;
	x=0;
	y=0;
	
	for (int i=0;i<h;i++){
		for (int j=0;j<w;j++){
			if (MAP[i][j]=='R'){
				x=i;
				y=j;
			}
		}
	}
	
	for (int tests=0;tests<1000000;tests++){
		if (MAP[(x+1)%h][(y+1)%w]!='#'){
			x=(x+1)%h;
			y=(y+1)%w;
		}
		else{
			cout<<x+1<<" "<<y+1<<endl;
			return 0;
		}
	}
	
	cout<<"loop"<<endl;
	return 0;
}