Piva and Glasses

import sys
import array

def fac( a):
    if a == 1:
        return 1
    if a == 0: 
        return 1
    return a*fac(a-1)



def combi(n, k):
    return (fac(n)//(fac(k)*fac(n-k)))

n = input()

alpha = [0 for x in range(26)]

for c in n:
    alpha[ord(c) - ord('a')] += 1

nb_left = len(n)
sum = 1
for val in alpha:
    #cout << nb_left << " " << val << endl;
    if val == 0:
        continue

    sum *= combi(nb_left, val)
    #cout<< "comb =" << combi(nb_left, val) << endl;
    #cout << sum << endl;
    nb_left -= val
    
print(sum)

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED

Test 21

Verdict: ACCEPTED

Test 22

Verdict: ACCEPTED

Test 23

Verdict: ACCEPTED

Test 24

Verdict: ACCEPTED

Test 25

Verdict: ACCEPTED

Test 26

Verdict: ACCEPTED

Test 27

Verdict: ACCEPTED

Test 28

Verdict: ACCEPTED

Test 29

Verdict: ACCEPTED

Test 30

Verdict: ACCEPTED