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#include <iostream>
#include <stdlib.h>
#include <math.h>

using namespace std;

string input;
int counter = 0;
int intcel;


bool check(int a, int b)
{
    int  buf[input.length()];
    int  cel[input.length()];
    for(int i =0; i<input.length(); i++){
        buf[i] = 0;
        cel[i] = ((int)input[i])-48;

    }
    int i = a;
    int len = 1;
    if (i > 0)
    {
        for (len = 0; i > 0; len++)
        {
            i = i / 10;
        }
    }
    int alen = len;
    i = b;
    len = 1;
    if (i > 0)
    {
        for (len = 0; i > 0; len++) {
            i = i / 10;
        }
    }
    int blen = len;


    if (alen>blen)len =  alen;

    int a_aar[len];
    int b_aar[len];

    for(int i =0; i<len; i++){
        a_aar[i] = 0; b_aar[i] = 0;
    }



    for(int i =len-1; i>=0; i--)

    {
            a_aar[i] = a%10;
            a-=a%10;
            a/=10;

            b_aar[i] = b%10;
            b-=b%10;
            b/=10;
    }
    bool wynik = true;
    int mod= 0;
    for(int i =0; i<len; i++)
    {

        if(a_aar[i]+b_aar[i]<10)
            buf[i+mod] =a_aar[i]+b_aar[i];
        else{
            buf[i+mod] = 1;
            mod++;
            buf[i+mod] = (a_aar[i]+b_aar[i])%10;

            if (i+mod>input.length()){
                wynik = false;
                break;
            }
        }

    }


    for(int i = 0; i<input.length(); i++)
        if(buf[i]!=cel[i]) wynik = false;

    return wynik;
    }


int main()
{
    cin>>input;
    intcel = atoi(input.c_str());

    for(int i =0; i<=intcel; i++)
        for(int j =0; j<= intcel; j++)
            if(check(i,j))
                counter++;

    cout<<counter;

    return 0;
}