#include<bits/stdc++.h>
using namespace std;int h,w,x,y,t=2e6,a,b;vector<string> s(2000);main(){cin>>h>>w;for(int i=0;i<h;i++){cin >> s[i];for(int j=0;j<w;j++)if(s[i][j]=='R')x=i,y=j;}while(t--) {if(s[a=(x+1)%h][b=(y+1)%w]=='#'){cout<<x+1<<" "<<y+1;return 0;}x=a,y=b;}cout<<"loop";}