#1)

x = int(input())
while (x % 2 != 0) and (x % 10 != 5):
    x = int(input())

#2)
for i in range(10):
    print(i)

#3)
K = int(input())
N = int(input())
s = 0
while K <= N:
    if K % 2 == 1:
        s += K
    K += 1
print(s)
#Ответ: 768182441

#4)
s = 1
n = int(input())
for x in range(1,n+1):
    s *= x
print(s)