ll@h,@w,I,J;VS s(h);for(string&x:s)rd(x);rep(i,h)rep(j,w)if(s[i][j]==82)I=i,J=j;rep(k,h*w){(++I)%=h;(++J)%=w;if(s[I][J]==35){wt((I-1+h)%h+1,(J-1+w)%w+1);return 0;}}wt("loop");