#include <stdio.h>
#include<math.h>

int become(int a){
    int num;
    int sum=0;
    int num1=0;
    while (a) {
    num = a % 10;
    if (num % 2 == 0)num = 0;
    else num = 1;
    num1++;
    sum+=num*pow(10,num1-1);
     a /= 10;
}
   return sum;
}
int main() {
    int a;
    
    scanf("%d", &a);
    printf("%d",become(a));

    return 0;
}