HDU-2051

#include <stdio.h>int main (){int a,b,c[10],i;while(scanf("%d",&a)!=EOF){    for(i=9;a%2!=a;a=a/2,i--){         b=a%2;         c[i]=b;    }c[i]=1;for(i;i<10;i++){printf("%d",c[i]);}printf("\n");}return 0;}