#import<ios>
int h,w,i,j,k=4e6;
char s[1<<20];
main(){
  scanf("%d%d %[^a]",&h,&w,s);
  for(i=h*(w+1);i--;)
    if(s[i]=='R'){
      for(;--k>0;){
        j=(i+2+(i%(w+1)!=w-1)*w)%(h*(w+1));
        if(s[j]=='#') k=-i;
        i=j;
      }
      printf(k?"%d %d":"loop",~k/(w+1)+1,~k%(w+1)+1);
      i=0;
    }
}