#include <stdio.h>

int a, b;

int main() {
    scanf("%d", &a);
    if(a==0) {
        printf("0");
    }
    while(a>0) {
        b=0;
        while(a>=2) {
        a=a-2;
        b=b+1;  
        }
        printf("%d", a);
        a=b;
    } 
}

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