#import<iostream>
using namespace std;int h,w,i,j,k,l;string s[1000];main(){cin>>h>>w;for(;cin>>s[k];k++)l=s[k].find("R"),~l?(i=k,j=l):0;for(;++i%=h,++j%=w,s[i][j]&4;);s[i][j]&1?cout<<(i?i:h)<<" "<<(j?j:w):cout<<"loop";}