#include <cstdio>
#include <iostream>
#include <fstream>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <bitset>
#include <algorithm>
#include <sstream>
#include <iomanip>
#include <cmath>
#include <cstdlib>
#include <ctype.h>
#include <cstring>
#include <string>
#include <ctime>
#include <cassert>
#include <utility>

using namespace std;

set<string> S;

void v1() {
    string s;
    cin >> s;
    for(int i = 2; i <= (int) s.size(); i++) {
        string lft = s.substr(0, i);
        string rht = s.substr(i);
//        cout << lft << " " << rht << "\n";
        for(int c = 0; c <= 9; c++) {
            char ch = c + '0';
            string ns = "";
            ns += ch;
            string nst = lft + ns + rht;
//            cout << nst << "---------------- this is new s\n";
            S.insert(nst);
        }
    }

    cout << S.size() << "\n";
}

void v2() { //
    cout << 73 << "\n";
}

int main() {
//	freopen("date.in", "r", stdin);
//	freopen("date.out","w", stdout);

    v1();
//    v2();

	return 0;
}