print('Введите число:')
age = int(input())
age = str(age)
if len(age) > 1:
a = int(age[1])
else:
a = int(age)
if a == 1:
print('Мне', age, 'год')
elif a > 1 and a < 5:
print('Мне', age, 'года')
print('Мне', age, 'лет')