n = int(input("Введите число n (n < 15): "))summa = 0factorial = 1
for i in range(1, n+1):factorial *= isumma += factorial
print("Сумма 1! + 2! + 3! + ... + n! = ", summa)
n = int(input("Введите число n (n < 15): "))
summa = 0
factorial = 1
for i in range(1, n+1):
factorial *= i
summa += factorial
print("Сумма 1! + 2! + 3! + ... + n! = ", summa)