NumarareAnagrame

#include <iostream>
using namespace std;
int F[26];

unsigned long long int fact(int n)
{
    unsigned long long int f=1;
    for(int i=2;i<=n;++i)
        f*=i;
    return f;
}

int main()
{
    char s[20];
    cin>>s;
    int n=0;
    while(s[n]!='\0')
        ++F[s[n++]-'a'];
    unsigned long long int num=1;
    for(int i=0;i<=26;++i)
        if(F[i])
            num*=fact(F[i]);
    cout<<fact(n)/num;
    return 0;
}