import itertools

alphabet = "ИВАН"

ar = itertools.product(alphabet, repeat=5) #Раз­ме­ще­ние с по­вто­ре­ни­ем

arl = []

for i in ar:

arl.append(list(i))

count = 0

for e in arl:

if e.count("И") >= 1:

count += 1

print(count)

symbols = 'ИВАН'

count = 0

for a in symbols:

for b in symbols:

for c in symbols:

for d in symbols:

for e in symbols:

s = a + b + c + d + e

if s.count('И') >= 1:

count += 1

print(count)

import itertools

arl = []

for i in itertools.product('ИВАН', repeat=5):

if i.count('И') >= 1:

arl.append(i)

print(len(arl))