f=lambda a,b,t=10:a<1or b>a%t>=t/10>0<f(a//t,a%t)or a>t and(b>9e9)+f(a,b,t*10) while 1:print(f(int(input()),1e12))

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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