#include<iostream>
	#include<math.h>
	#include<string>
	using namespace std;

	int kaijo(int a){
		int an = 1;
		if (a == 0){
			an = 1;
		}
		else{
			for (int i = 1; i <= a; i++){
				an *= i;
			}
		}
		return an;
	}
	int main(){
		string s;
		cin >> s;
		int cnt[8] = {0};
		int i = 0;
		int in;
		int ans;
		int bunbo=1;
		int bunshi = 0;
		int l = s.length();
		while (i<l){
			if (s[i] == '.'){
				i++;
				continue;
			}
			in = i;
			cnt[i]++;
			while (1){
				in = s.find(s[i], in + 1);
				if (in == -1){
					break;
				}
				else{
					cnt[i]++;
					s[in] = '.';
				}
			}
		//	cout << s << endl;
			i++;
		}
		for (int i = 0; i < 8; i++){
			bunshi += cnt[i];
			bunbo *= kaijo(cnt[i]);
		}
		ans = kaijo(bunshi) / bunbo - 1;
		cout << ans << endl;
		return 0;
	}