4 9 skip numbers by G.w.

j;main(n,i){for(;~scanf("%d",&i);printf("%d\n",j))for(j=0,n=1;i;i/=10,n*=8)j+=(i%10-i%10/5)*n;}

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

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