Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = [int(a) for a in input().split()]

dp = [[0]*N for _ in range(N)]
        
for k in range(N):
    for i in range(N-k):
        if k == 0:
            dp[i][i] = A[i]
            continue
    
        dp[i][i+k] = max(A[i]-dp[i+1][i+k], A[i+k]-dp[i][i+k-1])

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

Fixed submission:
N = int(input())
A = [int(a) for a in input().split()]

dp = [[0]*N for _ in range(N)]
        
for k in range(N):
    for i in range(N-k):
        if k == 0:
            dp[i][i] = A[i]
            continue
    
        dp[i][i+k] = max(A[i]-dp[i+1][i+k], A[i+k]-dp[i][i+k-1])

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

Buggy python submission (verdict: Time Limit Exceeded):
import sys
sys.setrecursionlimit(10**6)

N = int(input())
A = [int(a) for a in input().split()]

dp = [["0"]*N for _ in range(N)]
        
def f(i, j):
    if i > j or i < 0 or i >= N or j < 0 or j >= N:
        return 0
    
    if i == j:
        dp[i][j] = A[i]
        return A[i]
        
    if dp[i][j] != "0":
        return dp[i][j]
    
    dp[i][j] = max(A[i]-f(i+1, j), A[j]-f(i, j-1))
    return dp[i][j]

ans = f(0, N-1)
print(ans)

Fixed submission:
N = int(input())
A = [int(a) for a in input().split()]

dp = [[0]*N for _ in range(N)]
        
for k in range(N):
    for i in range(N-k):
        if k == 0:
            dp[i][i] = A[i]
            continue
    
        dp[i][i+k] = max(A[i]-dp[i+1][i+k], A[i+k]-dp[i][i+k-1])

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

Buggy python submission (verdict: Time Limit Exceeded):
import sys
sys.setrecursionlimit(10**6)

N = int(input())
A = [int(a) for a in input().split()]

dpmax = [["0"]*N for _ in range(N)]
dpmin = [["0"]*N for _ in range(N)]
        
def f(i, j, t):
    if i > j or i < 0 or i >= N or j < 0 or j >= N:
        return 0
    
    if i == j:
        if t == 0:
            dpmin[i][j] = -A[i]
            return -A[i]
        if t == 1:
            dpmax[i][j] = A[i]
            return A[i]
        
    if t == 0 and dpmin[i][j] != "0":
        return dpmin[i][j]
    elif t == 1 and dpmax[i][j] != "0":
        return dpmax[i][j]
    
    if t == 0:
        dpmin[i][j] = min(-A[i]+f(i+1, j, 1), -A[j]+f(i, j-1, 1))
        return dpmin[i][j]
    else:
        dpmax[i][j] = max(A[i]+f(i+1, j, 0), A[j]+f(i, j-1, 0))
        return dpmax[i][j]

ans = f(0, N-1, 1)
print(ans)

Fixed submission:
N = int(input())
A = [int(a) for a in input().split()]

dp = [[0]*N for _ in range(N)]
        
for k in range(N):
    for i in range(N-k):
        if k == 0:
            dp[i][i] = A[i]
            continue
    
        dp[i][i+k] = max(A[i]-dp[i+1][i+k], A[i+k]-dp[i][i+k-1])

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

Buggy python submission (verdict: Time Limit Exceeded):
import sys
sys.setrecursionlimit(10**6)

N = int(input())
A = [int(a) for a in input().split()]

dpmax = [["0"]*N for _ in range(N)]
dpmin = [["0"]*N for _ in range(N)]
        
def f(i, j, t):
    if i > j or i < 0 or i >= N or j < 0 or j >= N:
        return 0
    
    if i == j:
        if t == 0:
            dpmin[i][j] = -A[i]
            return -A[i]
        if t == 1:
            dpmax[i][j] = A[i]
            return A[i]
        
    if t == 0 and dpmin[i][j] != "0":
        return dpmin[i][j]
    elif t == 1 and dpmax[i][j] != "0":
        return dpmax[i][j]
    
    if t == 0:
        dpmin[i][j] = min(-A[i]+f(i+1, j, 1), -A[j]+f(i, j-1, 1))
        return dpmin[i][j]
    else:
        dpmax[i][j] = max(A[i]+f(i+1, j, 0), A[j]+f(i, j-1, 0))
        return dpmax[i][j]

ans = f(0, N-1, 1)
print(ans)

Fixed submission:
N = int(input())
A = [int(a) for a in input().split()]

dp = [[0]*N for _ in range(N)]
        
for k in range(N):
    for i in range(N-k):
        if k == 0:
            dp[i][i] = A[i]
            continue
    
        dp[i][i+k] = max(A[i]-dp[i+1][i+k], A[i+k]-dp[i][i+k-1])

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

Buggy python submission (verdict: Time Limit Exceeded):
import sys
sys.setrecursionlimit(10**6)

N = int(input())
A = [int(a) for a in input().split()]

dpmax = [[0]*N for _ in range(N)]
dpmin = [[0]*N for _ in range(N)]
        
def f(i, j, t):
    if i > j or i < 0 or i >= N or j < 0 or j >= N:
        return 0
    
    if i == j:
        if t == 0:
            dpmin[i][j] = -A[i]
            return -A[i]
        if t == 1:
            dpmax[i][j] = A[i]
            return A[i]
        
    if t == 0 and dpmin[i][j] > 0:
        return dpmin[i][j]
    elif t == 1 and dpmax[i][j] > 0:
        return dpmax[i][j]
    
    if t == 0:
        dpmin[i][j] = min(-A[i]+f(i+1, j, 1), -A[j]+f(i, j-1, 1))
        return dpmin[i][j]
    else:
        dpmax[i][j] = max(A[i]+f(i+1, j, 0), A[j]+f(i, j-1, 0))
        return dpmax[i][j]

ans = f(0, N-1, 1)
print(ans)

Fixed submission:
N = int(input())
A = [int(a) for a in input().split()]

dp = [[0]*N for _ in range(N)]
        
for k in range(N):
    for i in range(N-k):
        if k == 0:
            dp[i][i] = A[i]
            continue
    
        dp[i][i+k] = max(A[i]-dp[i+1][i+k], A[i+k]-dp[i][i+k-1])

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

Buggy python submission (verdict: Time Limit Exceeded):
import sys
sys.setrecursionlimit(10**6)

N = int(input())
A = [int(a) for a in input().split()]

dpmax = [[0]*N for _ in range(N)]
dpmin = [[0]*N for _ in range(N)]
        
def f(i, j, t):
    if i > j or i < 0 or i >= N or j < 0 or j >= N:
        return 0
    
    if i == j:
        if t == 0:
            dpmin[i][j] = -A[i]
            return -A[i]
        if t == 1:
            dpmax[i][j] = A[i]
            return A[i]
        
    if t == 0 and dpmin[i][j] > 0:
        return dpmin[i][j]
    elif t == 1 and dpmax[i][j] > 0:
        return dpmax[i][j]
    
    if t == 0:
        dpmin[i][j] = min(-A[i]+f(i+1, j, 1), -A[j]+f(i, j-1, 1))
        return dpmin[i][j]
    else:
        dpmax[i][j] = max(A[i]+f(i+1, j, 0), A[j]+f(i, j-1, 0))
        return dpmax[i][j]

ans = f(0, N-1, 1)
print(ans)

Fixed submission:
N = int(input())
A = [int(a) for a in input().split()]

dp = [[0]*N for _ in range(N)]
        
for k in range(N):
    for i in range(N-k):
        if k == 0:
            dp[i][i] = A[i]
            continue
    
        dp[i][i+k] = max(A[i]-dp[i+1][i+k], A[i+k]-dp[i][i+k-1])

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

Buggy python submission (verdict: Runtime Error):
N = int(input())
A = [int(a) for a in input().split()]

dpmax = [[0]*N for _ in range(N)]
dpmin = [[0]*N for _ in range(N)]
        
def f(i, j, t):
    if i > j or i < 0 or i >= N or j < 0 or j >= N:
        return 0
    
    if i == j:
        if t == 0:
            dpmin[i][j] = -A[i]
            return -A[i]
        if t == 1:
            dpmax[i][j] = A[i]
            return A[i]
        
    if t == 0 and dpmin[i][j] > 0:
        return dpmin[i][j]
    elif t == 1 and dpmax[i][j] > 0:
        return dpmax[i][j]
    
    if t == 0:
        dpmin[i][j] = min(-A[i]+f(i+1, j, 1), -A[j]+f(i, j-1, 1))
        return dpmin[i][j]
    else:
        dpmax[i][j] = max(A[i]+f(i+1, j, 0), A[j]+f(i, j-1, 0))
        return dpmax[i][j]

ans = f(0, N-1, 1)
print(ans)

Fixed submission:
N = int(input())
A = [int(a) for a in input().split()]

dp = [[0]*N for _ in range(N)]
        
for k in range(N):
    for i in range(N-k):
        if k == 0:
            dp[i][i] = A[i]
            continue
    
        dp[i][i+k] = max(A[i]-dp[i+1][i+k], A[i+k]-dp[i][i+k-1])

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

Buggy python submission (verdict: Runtime Error):
N = int(input())
A = [int(a) for a in input().split()]

dpmax = [[0]*N for _ in range(N)]
dpmin = [[0]*N for _ in range(N)]
        
def f(i, j, t):
    if i > j or i < 0 or j >= N:
        return 0
    
    if i == j:
        if t == 0:
            dpmin[i][j] = -A[i]
            return -A[i]
        if t == 1:
            dpmax[i][j] = A[i]
            return A[i]
        
    if t == 0 and dpmin[i][j] > 0:
        return dpmin[i][j]
    elif t == 1 and dpmax[i][j] > 0:
        return dpmax[i][j]
    
    if t == 0:
        dpmin[i][j] = min(-A[i]+f(i+1, j, 1), -A[j]+f(i, j-1, 1))
        return dpmin[i][j]
    else:
        dpmax[i][j] = max(A[i]+f(i+1, j, 0), A[j]+f(i, j-1, 0))
        return dpmax[i][j]

ans = f(0, N-1, 1)
print(ans)

Fixed submission:
N = int(input())
A = [int(a) for a in input().split()]

dp = [[0]*N for _ in range(N)]
        
for k in range(N):
    for i in range(N-k):
        if k == 0:
            dp[i][i] = A[i]
            continue
    
        dp[i][i+k] = max(A[i]-dp[i+1][i+k], A[i+k]-dp[i][i+k-1])

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