
# 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:

S = eval(input())



lst = [1 if S[0]=='<' else -1]

for i in range(1, len(S)):

    if S[i] == S[i - 1]:

        lst[-1] += 1 if S[i]=='<' else -1

    else:

        lst.append(-1 if S[i]=='>' else 1)

        

ans = [0]



for i in range(len(lst)):

    if lst[i] > 0:

        ans += list(range(1,lst[i]+1))

    else:

        ans[-1] = max(ans[-1], -lst[i])

        ans += list(range(-lst[i]-1,-1, -1))



print((sum(ans)))


# optimized version of the same code:

S = eval(input())



lst = [1 if S[0]=='<' else -1]

for i in range(1, len(S)):

    if S[i] == S[i - 1]:

        lst[-1] += 1 if S[i]=='<' else -1

    else:

        lst.append(-1 if S[i]=='>' else 1)

        

ans = [0]



for i in lst:

    if i > 0:

        ans += list(range(1,i+1))

    else:

        ans[-1] = max(ans[-1], -i)

        ans += list(range(-i-1,-1, -1))





print((sum(ans)))
S = eval(input())
lst = [1 if S[0] == "<" else -1]
for i in range(1, len(S)):
    if S[i] == S[i - 1]:
        lst[-1] += 1 if S[i] == "<" else -1
    else:
        lst.append(-1 if S[i] == ">" else 1)
ans = [0]
for i in range(len(lst)):
    if lst[i] > 0:
        ans += list(range(1, lst[i] + 1))
    else:
        ans[-1] = max(ans[-1], -lst[i])
        ans += list(range(-lst[i] - 1, -1, -1))
print((sum(ans)))

S = eval(input())
lst = [1 if S[0] == "<" else -1]
for i in range(1, len(S)):
    if S[i] == S[i - 1]:
        lst[-1] += 1 if S[i] == "<" else -1
    else:
        lst.append(-1 if S[i] == ">" else 1)
ans = [0]
for i in lst:
    if i > 0:
        ans += list(range(1, i + 1))
    else:
        ans[-1] = max(ans[-1], -i)
        ans += list(range(-i - 1, -1, -1))
print((sum(ans)))

-for i in range(len(lst)): -    if lst[i] > 0: -        ans += list(range(1, lst[i] + 1)) +for i in lst: +    if i > 0: +        ans += list(range(1, i + 1)) -        ans[-1] = max(ans[-1], -lst[i]) -        ans += list(range(-lst[i] - 1, -1, -1)) +        ans[-1] = max(ans[-1], -i) +        ans += list(range(-i - 1, -1, -1))