#import<ios>
int h,w,x,y,q=2e6,i,j;char*t="%d %d",s[1000020];main(){for(scanf(t,&h,&w);~scanf("%s",s+i);i+=w)for(j=0;j<w;j++)s[i+j]^82||(x=i/w,y=j);for(;--q&&s[x*w+y]^35;++x%=h)++y%=w;printf(q?t:"loop",x?x:h,y?y:w);}