1.
[print(i) for i in range(1, 26, 3)]
2.
i, sm = 6, 0
while i < 20:
sm += i
i += 2
print(sm)
3.
i, sm = 5, 0
while i < 20:
sm += i
i += 2
print(sm)
4.
x = int(input())
while x < 10:
print('Итерация', x)
if x == 5:
break
x += 1
print('Операция завершена')