#include <iostream>
#include <fstream>
#include <string>
#include <map>
#include <cmath>
#include <set>
#define DN 100005
#define LL long long

using namespace std;

set <string> st;

int main(){
	string s;
	//freopen("input.txt", "r", stdin);
	cin >> s;
	for(int i = 2; i < s.size() + 1;++i){
		for(char c = '0'; c <= '9'; ++c){
			s.insert(i, 1, c);
			//cout << s << " ";
			st.insert(s);
			s.erase(s.begin() + i);
		}
	}
	cout << st.size();
	return 0;
}