#include<stdio.h>
#include<stdlib.h>
int main(){
    int n;
    scanf("%d", &n);
    if(n ==0){
        printf("1\n");
    }else{
        int temp =abs(n);
        int modified_n = 0;
        int power_of_10 = 1;
        while (temp > 0) {
           int digit = temp % 10;
            if (digit == 0) {
                digit = 1;
            }
            modified_n += digit * power_of_10;
            power_of_10 *=10;
            temp /=10;
        }
        if(n < 0) {
            printf("-");
        }
        return 0;
    }