#include <stdio.h>
int num[1000];
int main() {
int n,i=0;
int r;
scanf("%d",&n);
if(n==0) {
printf("0");
return 0;
}
while(n!=0) {
r=n%-2;
n/=(-2);
if(r<0) {
r+=2;
n++;
}
num[i++]=r;
}
for(int j=i-1; j>=0; j--) {
printf("%d",num[j]);
}
return 0;
}
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