def bf(s):exec"from msvcrt import*;p=q=d=n=0;x={};l=[]\nwhile p<len(s):\n if d:\
d+={'[':1,']':-1}.get(s[p],0zin'+-':n+=44-ord(s[p]zin'<>':x[q]=n;q+=ord(s[p])-6\
1;n=x.get(q,0z=='.':putch(chr(n)z==',':n=ord(getche()z==']':p=-1+l.pop(z=='[':d\
,=n and[l.append(p)]or[1]\n p+=1".replace('z',')\n elif s[p]')#tokigun20041119:)