Buggy python submission (verdict: Runtime Error):
N, K = map(int, input().split())
V = list(map(int, input().split()))
l = [0]
for i in range(1, K + 1): #左に何回操作するか
    #print("i=",i)
    b = 0
    for j in range(i // 2 + 1): #いくつ捨てるか
        #print("j=",j)
        a = []
        for m in range(min(i - j, N)):
            a.append(V[m])
        a.sort()
        s = 0
        for m in range(i - j):
            if m >= j or a[m] >= 0:
                s += a[m]
        b = max(b, s)
    #print("b=",b)
    l.append(max(b, l[-1]))
#print(l)
r = [0]
for i in range(1, K + 1): #右に何回操作するか
    #print("i=",i)
    b = 0
    for j in range(i // 2 + 1): #いくつ捨てるか
        #print("j=",j)
        a = []
        for m in range(max(0, N - i + j), N):
            a.append(V[m])
        #print("s=",s)
        a.sort()
        s = 0
        for m in range(i - j):
            if m >= j or a[m] >= 0:
                s += a[m]
        b = max(b, s)
    #print("b=",b)
    r.append(max(b, r[-1]))
#print(r)
ans = 0
for i in range(K + 1):
    ans = max(ans, l[i] + r[K - i])
print(ans)


Fixed submission:
N, K = map(int, input().split())
V = list(map(int, input().split()))
ans = 0
for i in range(N + 1):#左から何個とるか
    if i > K:
        break
    for j in range(N + 1):#右から何個とるか
        if i + j > N or i + j > K:
            break
        for l in range(N + 1):#何個捨てるか
            if i + j + l > K:
                break
            a = V[:i] + V[N-j:]
            a.sort()
            s = sum(a[l:])
            ans = max(ans, s)
print(ans)

Buggy python submission (verdict: Runtime Error):
N, K = map(int, input().split())
V = list(map(int, input().split()))
l = [0]
for i in range(1, K + 1): #左に何回操作するか
    #print("i=",i)
    b = 0
    for j in range(i // 2 + 1): #いくつ捨てるか
        if j > i:
            break
        #print("j=",j)
        a = []
        for m in range(i - j):
            a.append(V[m])
        a.sort()
        s = 0
        for m in range(i - j):
            if m >= j or a[m] >= 0:
                s += a[m]
        b = max(b, s)
    #print("b=",b)
    l.append(max(b, l[-1]))
#print(l)
r = [0]
for i in range(1, K + 1): #右に何回操作するか
    #print("i=",i)
    b = 0
    for j in range(i // 2 + 1): #いくつ捨てるか
        if j > i:
            break
        #print("j=",j)
        a = []
        for m in range(N - i + j, N):
            a.append(V[m])
        #print("s=",s)
        a.sort()
        s = 0
        for m in range(i - j):
            if m >= j or a[m] >= 0:
                s += a[m]
        b = max(b, s)
    #print("b=",b)
    r.append(max(b, r[-1]))
#print(r)
ans = 0
for i in range(K + 1):
    ans = max(ans, l[i] + r[K - i])
print(ans)


Fixed submission:
N, K = map(int, input().split())
V = list(map(int, input().split()))
ans = 0
for i in range(N + 1):#左から何個とるか
    if i > K:
        break
    for j in range(N + 1):#右から何個とるか
        if i + j > N or i + j > K:
            break
        for l in range(N + 1):#何個捨てるか
            if i + j + l > K:
                break
            a = V[:i] + V[N-j:]
            a.sort()
            s = sum(a[l:])
            ans = max(ans, s)
print(ans)

Buggy python submission (verdict: Runtime Error):
N, K = map(int, input().split())
V = list(map(int, input().split()))
l = [0]
for i in range(1, K + 1): #左に何回操作するか
    #print("i=",i)
    b = 0
    for j in range(i // 2 + 1): #いくつ捨てるか
        #print("j=",j)
        a = []
        for m in range(i - j):
            a.append(V[m])
        a.sort()
        s = 0
        for m in range(i - j):
            if m >= j or a[m] >= 0:
                s += a[m]
        b = max(b, s)
    #print("b=",b)
    l.append(max(b, l[-1]))
#print(l)
r = [0]
for i in range(1, K + 1): #右に何回操作するか
    #print("i=",i)
    b = 0
    for j in range(i // 2 + 1): #いくつ捨てるか
        #print("j=",j)
        a = []
        for m in range(N - i + j, N):
            a.append(V[m])
        #print("s=",s)
        a.sort()
        s = 0
        for m in range(i - j):
            if m >= j or a[m] >= 0:
                s += a[m]
        b = max(b, s)
    #print("b=",b)
    r.append(max(b, r[-1]))
#print(r)
ans = 0
for i in range(K + 1):
    ans = max(ans, l[i] + r[K - i])
print(ans)


Fixed submission:
N, K = map(int, input().split())
V = list(map(int, input().split()))
ans = 0
for i in range(N + 1):#左から何個とるか
    if i > K:
        break
    for j in range(N + 1):#右から何個とるか
        if i + j > N or i + j > K:
            break
        for l in range(N + 1):#何個捨てるか
            if i + j + l > K:
                break
            a = V[:i] + V[N-j:]
            a.sort()
            s = sum(a[l:])
            ans = max(ans, s)
print(ans)

Buggy python submission (verdict: Runtime Error):
N, K = map(int, input().split())
V = list(map(int, input().split()))
l = [0]
for i in range(1, K + 1): #左に何回操作するか
    #print("i=",i)
    b = 0
    for j in range(i // 2 + 1): #いくつ捨てるか
        #print("j=",j)
        a = V[0:i - j]
        a.sort()
        s = 0
        for m in range(i - j):
            if m >= j or a[m] >= 0:
                s += a[m]
        b = max(b, s)
    #print("b=",b)
    l.append(max(b, l[-1]))
#print(l)
r = [0]
for i in range(1, K + 1): #右に何回操作するか
    #print("i=",i)
    b = 0
    for j in range(i // 2 + 1): #いくつ捨てるか
        #print("j=",j)
        a = V[N - i + j:N]
        s = sum(a)
        #print("s=",s)
        a.sort()
        a.sort()
        s = 0
        for m in range(i - j):
            if m >= j or a[m] >= 0:
                s += a[m]
        b = max(b, s)
    #print("b=",b)
    r.append(max(b, r[-1]))
#print(r)
ans = 0
for i in range(K + 1):
    ans = max(ans, l[i] + r[K - i])
print(ans)


Fixed submission:
N, K = map(int, input().split())
V = list(map(int, input().split()))
ans = 0
for i in range(N + 1):#左から何個とるか
    if i > K:
        break
    for j in range(N + 1):#右から何個とるか
        if i + j > N or i + j > K:
            break
        for l in range(N + 1):#何個捨てるか
            if i + j + l > K:
                break
            a = V[:i] + V[N-j:]
            a.sort()
            s = sum(a[l:])
            ans = max(ans, s)
print(ans)

Buggy python submission (verdict: Runtime Error):
N, K = map(int, input().split())
V = list(map(int, input().split()))
l = [0]
for i in range(1, K + 1): #左に何回操作するか
    #print("i=",i)
    b = 0
    for j in range(i // 2 + 1): #いくつ捨てるか
        #print("j=",j)
        a = V[0:i - j]
        s = sum(a)
        #print("s=",s)
        a.sort()
        for m in range(j):
            if a[m] >= 0:
                break
            s -= a[m]
        b = max(b, s)
    #print("b=",b)
    l.append(max(b, l[-1]))
#print(l)
r = [0]
for i in range(1, K + 1): #右に何回操作するか
    #print("i=",i)
    b = 0
    for j in range(i // 2 + 1): #いくつ捨てるか
        #print("j=",j)
        a = V[N - i + j:N]
        s = sum(a)
        #print("s=",s)
        a.sort()
        for m in range(j):
            if a[m] >= 0:
                break
            s -= a[m]
        b = max(b, s)
    #print("b=",b)
    r.append(max(b, r[-1]))
#print(r)
ans = 0
for i in range(K + 1):
    ans = max(ans, l[i] + r[K - i])
print(ans)


Fixed submission:
N, K = map(int, input().split())
V = list(map(int, input().split()))
ans = 0
for i in range(N + 1):#左から何個とるか
    if i > K:
        break
    for j in range(N + 1):#右から何個とるか
        if i + j > N or i + j > K:
            break
        for l in range(N + 1):#何個捨てるか
            if i + j + l > K:
                break
            a = V[:i] + V[N-j:]
            a.sort()
            s = sum(a[l:])
            ans = max(ans, s)
print(ans)