#include<iostream>
int h,w,x,y,q=2e6,a,b,i,j;char s[1020][1020];main(){scanf("%d%d",&h,&w);for(;~scanf("%s",s+i);i++)for(j=0;j<w;j++)s[i][j]-'R'||(x=i,y=j);while(q--){if(s[a=(x+1)%h][b=(y+1)%w]=='#'){printf("%d %d",x+1,y+1);return 0;}x=a,y=b;}printf("loop");}