
# slower version:

s = input()
for i in range(len(s)):
  if i%2 == 0:
    print(s[i], end = '')


# optimized version of the same code:

s = input()
ans = ''
for i in range(len(s)):
  if i % 2 == 0:
    ans += s[i]
print(ans)



# slower version:

ia = [int(i) for i in input().split(" ")]

W=ia[0]

H=ia[1]

x=ia[2]

y=ia[3]

r=ia[4]

print(("Yes" if 0<=x-r and x+r<=W and 0<=y-r and y+r<=H else "No"))

# optimized version of the same code:

# encoding:utf-8



input = list(map(int, input().split()))

W, H, x, y, r = input



if x - r < 0 or x + r > W:

	print("No")

elif y - r < 0 or y + r > H:

	print("No")

else:

	print("Yes")
ia = [int(i) for i in input().split(" ")]
W = ia[0]
H = ia[1]
x = ia[2]
y = ia[3]
r = ia[4]
print(("Yes" if 0 <= x - r and x + r <= W and 0 <= y - r and y + r <= H else "No"))

# encoding:utf-8
input = list(map(int, input().split()))
W, H, x, y, r = input
if x - r < 0 or x + r > W:
    print("No")
elif y - r < 0 or y + r > H:
    print("No")
else:
    print("Yes")

-ia = [int(i) for i in input().split(" ")] -W = ia[0] -H = ia[1] -x = ia[2] -y = ia[3] -r = ia[4] -print(("Yes" if 0 <= x - r and x + r <= W and 0 <= y - r and y + r <= H else "No")) +# encoding:utf-8 +input = list(map(int, input().split())) +W, H, x, y, r = input +if x - r < 0 or x + r > W: +    print("No") +elif y - r < 0 or y + r > H: +    print("No") +else: +    print("Yes")