f = open('textik4.txt','r')
count = 0
l = 0
max = 0
alstat = [0]*31
words = []
stat = [0]*31
alph = "AБВГДЕЖЗИКЛМНОПРСТУФХЦЧШЩЫЬЭЮЯ_"

text = f.read()
words = set(text)
n = len(text)
k = len(words)
print("Kolvo vceh cimvolov in text:",n,"Kolvo vceh razn bukv:",k)
words = list(words)
la = list(text)
text = list(text)
for i in range(1,40):
    for j in range(0,n-i-1):
      if text[j] == text[j+i]:
        count += 1
    if count > max:
         max = count
         k = i
    count = 0
print(k)
nooptext = [0]*len(text)
key = ""
for i in range(0,k):
    for j in range(l,len(text)-k,k):
        alstat[alph.index(text[j])] += 1
        print(alph.index(text[j]))
    max = 0
    for j in range(len(alstat)):
        if alstat[j] > max:
            max = alstat[j]
            id_max = j
    key += alph[(id_max+1) % len(alph)]
    id_max = 30 - id_max
    j = 1
    for j in range(l,len(text)-k,k):
        nooptext[j] = alph[(alph.index(text[j]) + id_max) % len(alph)]
    l += 1
    alstat = [0]*31
f.close()
"""f = open('open_text.txt','w+')
f.write(nooptext)
f.close()"""