#include<cstdlib>
#include<vector>
#include<queue>
#include<map>
#include<cctype>
#include<string>
#include<cstring>
#include<algorithm>
using namespace std;

#define fisier 0
#define consola 0

#if fisier
 #include<fstream>
 ifstream cin("fisier.in");
 ofstream cout("fisier.out");
#else
 #include<iostream> 
#endif

map <string,bool> mp;
int i,j,k,sol=0;
string s;
string sir;

int main(){
    cin>>s;
    for(i=1;i<s.length();i++)
       {
        for(char j='0';j<='9';j++)
           {
            sir="";
            for(k=0;k<=i;k++)
              sir=sir+s[k];
            
            sir=sir+j;
            
            for(k=i+1;k<s.length();k++)
              sir=sir+s[k];
            
            mp[sir]=1;
           }              
       }
    
    cout<<mp.size();
    
    #if fisier
     cin.close();
     cout.close();
    #endif
    
    #if consola
     system("pause");
    #endif
    return 0;
}