gistfile1.txt

import array as ar

old = ar.array('u', 'itmathrepetitor')
new = ar.array('u', 'silence')
line = input()
a = ar.array('u', line)

for i in range(len(line) - len(old) + 1):
    if a[i:i + len(old)] == old:
        a[i:i + len(old)] = new
print(a)