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import sys
from itertools import combinations
import numpy as np
nListCount = 3
arrInput = [4, 4, 2, 4, 3] ## Example 1
## arrInput = [1, 1, 1, 1, 1] ## Example 2
## arrInput = [4, 7, 1, 10, 7, 4, 1, 1] ## Example 3
arrUniq = list(set(arrInput))
## print (arrUniq)
if len(arrUniq) < nListCount:
print (0)
sys.exit()
nNumCount = 0
arrCombList = combinations(arrUniq, nListCount)
for arrCombLoop in list(arrCombList):
nProduct = np.prod([arrInput.count(arrCombLoop[nLoop]) for nLoop in range(nListCount)])
nNumCount = nNumCount + nProduct
print (nNumCount)
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