#include<stdio.h>
#include<stdlib.h>
int replacezero(int n)
{
    int result = 0,place = 1;
    int isNegative = 0;
    if(n<0)
    {
        isNegative = 1;
        n = -n;
        
    }
    if(n == 0)
    {
        return 1;
        
    }
    while (n>0)
    {
        int digit = n%10;
        if(digit == 0)
        {
            digit = 1;
            
        }
        result += digit + place;
        place += 10;
        n/=10;
        
    }
    if(isNegative)
    {
        result = -result;
    }
    return result;
}
int main())
{
    int n;
    scanf("%d",&n);
    int modified = replacezero(n);
    printf("%d\n",modified);
    return 0;
}