Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
a = list(map(int, input().split()))
dp = [0 for i in range(N)]
for i in range(N-1, -1, -1):
    dp[i] = a[i]
    prev = dp[i]
    for j in range(i+1, N):
        right = a[i] - dp[j]
        left = a[j] - prev
        if right > left:
            dp[j] = right
            prev = right
        else:
            dp[j] = left
            prev = left
print(dp[-1])

Fixed submission:
def deque(n, arr):
    dp = [[0] * n for _ in range(n)]
    for i in range(n):
        dp[i][i] = arr[i]

    for l in range(n-2, -1, -1):
        for r in range(l+1, n):
            L = arr[l] - dp[l+1][r]
            R = arr[r] - dp[l][r-1]
            dp[l][r] = L if L > R else R
    return dp[0][n-1]

n = int(input())
arr = [int(x) for x in input().split()]
print(deque(n, arr))

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
a = [int(x) for x in input().split()]
dp = [0 for i in range(N)]
for i in range(N-1, -1, -1):
    dp[i] = a[i]
    prev = dp[i]
    for j in range(i+1, N):
        right = a[i] - dp[j]
        left = a[j] - prev
        if right > left:
            dp[j] = right
            prev = right
        else:
            dp[j] = left
            prev = left
print(dp[-1])

Fixed submission:
def deque(n, arr):
    dp = [[0] * n for _ in range(n)]
    for i in range(n):
        dp[i][i] = arr[i]

    for l in range(n-2, -1, -1):
        for r in range(l+1, n):
            L = arr[l] - dp[l+1][r]
            R = arr[r] - dp[l][r-1]
            dp[l][r] = L if L > R else R
    return dp[0][n-1]

n = int(input())
arr = [int(x) for x in input().split()]
print(deque(n, arr))

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
piles = [int(x) for x in input().split()]
dp = [[0] * n for _ in range(n)]
for l in range(n-1,-1,-1):
    for r in range(l, n):
        if l == r:
            dp[l][r] = piles[l]
        else:
            dp[l][r] = max(piles[l] - dp[l+1][r], piles[r] - dp[l][r-1])
print(dp[0][n-1])

Fixed submission:
def deque(n, arr):
    dp = [[0] * n for _ in range(n)]
    for i in range(n):
        dp[i][i] = arr[i]

    for l in range(n-2, -1, -1):
        for r in range(l+1, n):
            L = arr[l] - dp[l+1][r]
            R = arr[r] - dp[l][r-1]
            dp[l][r] = L if L > R else R
    return dp[0][n-1]

n = int(input())
arr = [int(x) for x in input().split()]
print(deque(n, arr))

Buggy python submission (verdict: Runtime Error):
n = int(input())
piles = [int(x) for x in input().split()]
dp = [[0] * n for _ in range(n)]
for l in range(n-1,-1,-1):
    for r in range(l, n):
        if l == r:
            dp[l][r] = piles[l]
        else:
            dp[l][r] = max(piles[l] - dp[l+1][r], piles[r] - dp[l][r-1])
return dp[0][n-1]

Fixed submission:
def deque(n, arr):
    dp = [[0] * n for _ in range(n)]
    for i in range(n):
        dp[i][i] = arr[i]

    for l in range(n-2, -1, -1):
        for r in range(l+1, n):
            L = arr[l] - dp[l+1][r]
            R = arr[r] - dp[l][r-1]
            dp[l][r] = L if L > R else R
    return dp[0][n-1]

n = int(input())
arr = [int(x) for x in input().split()]
print(deque(n, arr))

Buggy python submission (verdict: Time Limit Exceeded):
def deque(n, arr):
    dp = [[0] * n for _ in range(n)]
    for i in range(n):
        dp[i][i] = arr[i]

    for l in range(n-2, -1, -1):
        for r in range(l+1, n):
            dp[l][r] = max(arr[l] - dp[l+1][r], arr[r] - dp[l][r-1])
    return dp[0][n-1]

n = int(input())
arr = [int(x) for x in input().split()]
print(deque(n, arr))


Fixed submission:
def deque(n, arr):
    dp = [[0] * n for _ in range(n)]
    for i in range(n):
        dp[i][i] = arr[i]

    for l in range(n-2, -1, -1):
        for r in range(l+1, n):
            L = arr[l] - dp[l+1][r]
            R = arr[r] - dp[l][r-1]
            dp[l][r] = L if L > R else R
    return dp[0][n-1]

n = int(input())
arr = [int(x) for x in input().split()]
print(deque(n, arr))

Buggy python submission (verdict: Time Limit Exceeded):
import sys
input = sys.stdin.readline

n = int(input())
arr = [int(x) for x in input().split()]
dp = [[0] * n for _ in range(n)]

for i in range(n):
    dp[i][i] = arr[i]

for l in range(n-2, -1, -1):
    for r in range(l+1, n):
        dp[l][r] = max(arr[l] - dp[l+1][r], arr[r] - dp[l][r-1])
print(dp[0][n-1])


Fixed submission:
def deque(n, arr):
    dp = [[0] * n for _ in range(n)]
    for i in range(n):
        dp[i][i] = arr[i]

    for l in range(n-2, -1, -1):
        for r in range(l+1, n):
            L = arr[l] - dp[l+1][r]
            R = arr[r] - dp[l][r-1]
            dp[l][r] = L if L > R else R
    return dp[0][n-1]

n = int(input())
arr = [int(x) for x in input().split()]
print(deque(n, arr))

Buggy python submission (verdict: Time Limit Exceeded):
import sys
input = sys.stdin.readline

n = int(input())
arr = [int(x) for x in input().split()]
Max = 3005

dp = [[0] * n for _ in range(n)]

for l in range(n-1,-1,-1):
    for r in range(l, n):
        if l == r:
            dp[l][r] = arr[l]
        else:
            dp[l][r] = max(arr[l] - dp[l+1][r], arr[r] - dp[l][r-1])

print(dp[0][n-1])

Fixed submission:
def deque(n, arr):
    dp = [[0] * n for _ in range(n)]
    for i in range(n):
        dp[i][i] = arr[i]

    for l in range(n-2, -1, -1):
        for r in range(l+1, n):
            L = arr[l] - dp[l+1][r]
            R = arr[r] - dp[l][r-1]
            dp[l][r] = L if L > R else R
    return dp[0][n-1]

n = int(input())
arr = [int(x) for x in input().split()]
print(deque(n, arr))

Buggy python submission (verdict: Time Limit Exceeded):
import sys
input = sys.stdin.readline

n = int(input())
arr = [int(x) for x in input().split()]
Max = 3005

dp = [[0 for i in range(n)] for i in range(n)]

for l in range(n-1,-1,-1):
    for r in range(l, n):
        if l == r:
            dp[l][r] = arr[l]
        else:
            dp[l][r] = max(arr[l] - dp[l+1][r], arr[r] - dp[l][r-1])

print(dp[0][n-1])

Fixed submission:
def deque(n, arr):
    dp = [[0] * n for _ in range(n)]
    for i in range(n):
        dp[i][i] = arr[i]

    for l in range(n-2, -1, -1):
        for r in range(l+1, n):
            L = arr[l] - dp[l+1][r]
            R = arr[r] - dp[l][r-1]
            dp[l][r] = L if L > R else R
    return dp[0][n-1]

n = int(input())
arr = [int(x) for x in input().split()]
print(deque(n, arr))

Buggy python submission (verdict: Time Limit Exceeded):
import sys
input = sys.stdin.readline

n = int(input())
arr = [int(x) for x in input().split()]
Max = 3005

dp = [[0 for i in range(Max)] for i in range(Max)]

for l in range(n-1,-1,-1):
    for r in range(l, n):
        if l == r:
            dp[l][r] = arr[l]
        else:
            dp[l][r] = max(arr[l] - dp[l+1][r], arr[r] - dp[l][r-1])

print(dp[0][n-1])

Fixed submission:
def deque(n, arr):
    dp = [[0] * n for _ in range(n)]
    for i in range(n):
        dp[i][i] = arr[i]

    for l in range(n-2, -1, -1):
        for r in range(l+1, n):
            L = arr[l] - dp[l+1][r]
            R = arr[r] - dp[l][r-1]
            dp[l][r] = L if L > R else R
    return dp[0][n-1]

n = int(input())
arr = [int(x) for x in input().split()]
print(deque(n, arr))

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
arr = [int(x) for x in input().split()]
Max = 3005

dp = [[0 for i in range(Max)] for i in range(Max)]

for l in range(n-1,-1,-1):
    for r in range(l, n):
        if l == r:
            dp[l][r] = arr[l]
        else:
            dp[l][r] = max(arr[l] - dp[l+1][r], arr[r] - dp[l][r-1])

print(dp[0][n-1])

Fixed submission:
def deque(n, arr):
    dp = [[0] * n for _ in range(n)]
    for i in range(n):
        dp[i][i] = arr[i]

    for l in range(n-2, -1, -1):
        for r in range(l+1, n):
            L = arr[l] - dp[l+1][r]
            R = arr[r] - dp[l][r-1]
            dp[l][r] = L if L > R else R
    return dp[0][n-1]

n = int(input())
arr = [int(x) for x in input().split()]
print(deque(n, arr))