#include <iostream> #include <cstdlib> #include <cstdio> #include <string> #include <cstring> #include <cmath> #include <cctype> #include <typeinfo> #include <algorithm> #include <sstream> #include <vector> #include <map> #include <set> #include <queue> #include <stack> #include <bitset> #include <iterator> using namespace std; typedef pair<int, int> ii; typedef vector<int> vi; typedef vector<ii> vii; #define INF 1e9 #define ll long long #define ull unsigned long long int main() { // freopen("C:\\in.txt", "r", stdin); set<string> s; string s1; cin >> s1; string dig[] = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9"}; s1 = s1.substr(2); for(int i=0; i<=s1.size(); ++i){ for(int j=0; j<10; ++j){ string temp = s1.substr(0, i) + dig[j] + s1.substr(i); // cout << temp << endl; s.insert(temp); } } cout << s.size() << endl; return 0; }