n = int(input()) coins = n // 25 + (n % 25 // 10) + (n % 25 % 10 // 5) + (n % 5 // 1) print(coins)
num = int(input()) count = int(0) while num >= 0: count = count + num num = int(input()) print(count)
word = input() while word != 'КОНЕЦ': print(word) word = input()
i = -1 while i > 0: print('Hello world!')