#include <bits/stdc++.h>
using namespace std;int main(){int h,w,y,x;cin>>h>>w;vector<string>a(h);for(int i=0;i<h;i++)cin>>a[i];for(int i=0;i<h;i++)for(int j=0;j<w;j++)if(a[i][j]=='R'){y=i;x=j;i=j=h;break;}while(a[(y+1)%h][(x+1)%w]!='#'){y=(y+1)%h;x=(x+1)%w;if(a[y][x]=='R'){cout<<"loop";return 0;}}cout<<y+1<<" "<<x+1;}