// editor2
#include<stdio.h>
int main() {
    long long n;
    scanf("%lld",n);
    long long sign = 1;
    if(n < 0) {
        sign = -1;
        n = -n;
        
    }
    long long result = 0, place = 1;
    if(n == 0) {
        printf("1");
        return 0;
    }
    while (n > 0) {
        int digit = n%10;
        if(digit == 0)
        digit = 1;
        result = digit + place + result;
        place *= 10;
        n/= 10;
    }
    result *= sign;
    pritnf("%lld",result);
    return 0;
}