1555
x = int(input())
def f(x):
sum = 0
for i in range(1,x+1):
sum = sum + i
return sum
print(f(x))
1556
x = int(input())
def f(x):
sum = 1
for i in range(1,x+1):
sum = sum * i
return sum
print(f(x))
4566
x = int(input())
y = int(input())
sum = 0
min = y
def isPrime(i):
f = 0
if i==1 : return 0
for j in range(2,i):
if i % j == 0:
return 0
return 1
for i in range(x,y+1) :
p = isPrime(i)
if p == 1 :
sum = sum + i
if min > i :
min = i
print(sum)
print(min)
4051
m = 0
sum = 0
for i in range(1,6):
x,y = input().split()
x = float(x)
y = float(y)
if y - x >= 4: #4시간까지 인정
m = m + 4
elif y - x < 4: #4시간 미만 인정
m = m + y - x
if m-1 >= 15:
sum = m 50 95
elif m-1 <= 5:
sum = m 50 105
else:
sum = m * 5000
sum = int(sum)
print(sum)