
# 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:

A, B, C, X, Y = list(map(int, input().split()))



ans = float('inf')



for i in range(10 ** 5 + 1):

    ans = min(ans, A * max(X - i, 0) + B * max(Y - i, 0) + 2 * C * i)

print(ans)

# optimized version of the same code:

A, B, C, X, Y = list(map(int, input().split()))



# ans = float('inf')



# for i in range(10 ** 5 + 1):

#     ans = min(ans, A * max(X - i, 0) + B * max(Y - i, 0) + 2 * C * i)

# print(ans)



min_xy = min(X, Y)

max_xy = max(X, Y)

ans1 = 2 * C * min_xy + A * (X - min_xy) + B * (Y - min_xy)

ans2 = A * X + B * Y

ans3 = 2 * C * max_xy

print((min(ans1, ans2, ans3)))
A, B, C, X, Y = list(map(int, input().split()))
ans = float("inf")
for i in range(10**5 + 1):
    ans = min(ans, A * max(X - i, 0) + B * max(Y - i, 0) + 2 * C * i)
print(ans)

A, B, C, X, Y = list(map(int, input().split()))
# ans = float('inf')
# for i in range(10 ** 5 + 1):
#     ans = min(ans, A * max(X - i, 0) + B * max(Y - i, 0) + 2 * C * i)
# print(ans)
min_xy = min(X, Y)
max_xy = max(X, Y)
ans1 = 2 * C * min_xy + A * (X - min_xy) + B * (Y - min_xy)
ans2 = A * X + B * Y
ans3 = 2 * C * max_xy
print((min(ans1, ans2, ans3)))

-ans = float("inf") -for i in range(10**5 + 1): -    ans = min(ans, A * max(X - i, 0) + B * max(Y - i, 0) + 2 * C * i) -print(ans) +# ans = float('inf') +# for i in range(10 ** 5 + 1): +#     ans = min(ans, A * max(X - i, 0) + B * max(Y - i, 0) + 2 * C * i) +# print(ans) +min_xy = min(X, Y) +max_xy = max(X, Y) +ans1 = 2 * C * min_xy + A * (X - min_xy) + B * (Y - min_xy) +ans2 = A * X + B * Y +ans3 = 2 * C * max_xy +print((min(ans1, ans2, ans3)))