# data[].attributes.body
# bài 1

n=int(input())

if n%2==0:

print('Chẵn')

else:

print('Lẻ')

#bài 2

n=int(input())

tong =0

for i in range (n+1):

tong=tong+i

print(tong)

#bài 3

n=int(input())

k=n//3

tong=3*k*(k+1)//2

print(tong)

# bài 4

n=int(input())

d=0

for x in range(1,n+1):

t=0

for i in range(1,x+1):

if x%i==0:

t+=i

if t==2*x:

d=d+1

print(d)

# data[].attributes.body
1.

n=int(input())

if n % 2 == 0:

print('Chan')

else:

print('Le')

2.

n=int(input())

for i in range(1,n):

tong=(1,10)

print(n)

3.

n=int(input())

for i in range(1,n):

if n % 3 == 0:

print(n)

# data[].attributes.body
#Bài 1

n=int(input())

if n%2==0:

print("Chẵn")

else:

print("Lẻ")

#Bài 2

n=int(input())

print(n*(n+1)//2)

#Bài 3

n=int(input())

tong=0

for i in range(1,n+1,3):

tong+=i

print(tong)

#Bài 4

n=int(input())

dem=0

for i in range(1,n+1):

tong=0

for j in range(1,i+1):

if i%j==0:

tong+=j

if i*2==tong:

dem+=1

print(dem)

# data[].attributes.body
1.

n=int(input())

if n%2==0:

print('Chẵn')

else:

print('No')

2.

3.

n=int(input())

for i in range(1,n):

if i%3==0:

print(i)

4.

# data[].attributes.body
1.n=int(input())

for i in range(1,n):

print(i)n=int(input())

2.n=int(input())

for i in range(2,n,2):

print(i)n=int(input())

3.n=int(input())

for i in range(1,n):

if i % 3 == 0:

print(i)n=int(input())

4.n=int(input())

for uoc in range(1,n):

if n % uoc == 0:

print(uoc)