#include<bits/stdc++.h>
char b[1234][1234];int X,Y,i,x,y;main(){scanf("%d %d",&Y,&X);for(;i<Y;i++)scanf("%s",b[i]);for(i=0;i<X*Y;i++)if(b[i/X][i%X]=='R'){x=i%X;y=i/X;}for(;i>=0;i--){y=(y+1)%Y;x=(x+1)%X;if(b[y][x]=='#')break;}if(b[y][x]=='#')printf("%d %d\n",(y+Y-1)%Y+1,(x+X-1)%X+1);else puts("loop");}