qyliang/CodeNanoFix huggingface dataset:
Buggy code:
N = int(input())
a = list(map(int,input().split()))
total=0

list.sort(a, reverse=True)
print(a)
if N %2== 0:
	for i in range(int(N/2)):
		if i == 0:
			total += a[i]
		else:
			total += a[i]*2
else:
	for i in range(int((N-1)/2)):
		if i == 0:
			total += a[i]
		else:
			total += a[i]*2
	total += a[int(N/2 - 1)]
print(total)


Fixed code:
N = int(input())
a = list(map(int,input().split()))
total=0

list.sort(a, reverse=True)

if N %2== 0:
	for i in range(int(N/2)):
		if i == 0:
			total += a[i]
		else:
			total += a[i]*2
else:
	for i in range(int((N-1)/2)):
		if i == 0:
			total += a[i]
		else:
			total += a[i]*2
	total += a[int((N-1)/2 )]
print(total)
Buggy code:
def main1():
    N=int(input())
    A=list(map(int,input().split()))
    A.sort(reverse=True)
    cn=1
    ans=A[0]
    tmp=0
    print(-(-N//2))
    if N%2==0:
        while cn<-(-N//2):
            ans+=A[cn]*2
            cn=cn+1
        print(ans)
    else:
        while cn<-(-N//2)-1:
            ans+=A[cn]*2
            cn=cn+1
        print(ans+A[cn])
main1()


Fixed code:
def main1():
    N=int(input())
    A=list(map(int,input().split()))
    A.sort(reverse=True)
    cn=1
    ans=A[0]
    tmp=0
    if N%2==0:
        while cn<-(-N//2):
            ans+=A[cn]*2
            cn=cn+1
        print(ans)
    else:
        while cn<-(-N//2)-1:
            ans+=A[cn]*2
            cn=cn+1
        print(ans+A[cn])
main1()
Buggy code:
N = int(input())
S = sorted(list(map(int,input().split())),reverse=True)
kokoti = 0
if N == 1:
    print(0)
elif N==2:
    print(max(S))
else:
    kokoti += max(S)
    for x in range (1,N-1):
        if x%2 == 1:
            kokoti += S[x//2 + 1]
        else:
            kokoti += S[x//2]
    print(kokoti)
print(S)


Fixed code:
N = int(input())
S = sorted(list(map(int,input().split())),reverse=True)
kokoti = 0
if N == 1:
    print(0)
elif N==2:
    print(max(S))
else:
    kokoti += max(S)
    for x in range (1,N-1):
        if x%2 == 1:
            kokoti += S[x//2 + 1]
        else:
            kokoti += S[x//2]
    print(kokoti)
Buggy code:
n=int(input())
a=list(map(int,input().split()))

a.sort(reverse=True)

ans=0

for i in range(1,n//2):
    ans=ans+a[i-1]
    print(ans,a[i-1])
for i in range(n//2,n-1):
    ans=ans+a[i-n//2+1]
    print(ans,a[i-n//2+1])
ans=ans+a[n//2]
print(ans)

Fixed code:
n=int(input())
a=list(map(int,input().split()))

a.sort(reverse=True)

ans=0

if n%2==0:
    for i in range(1,n//2):
        ans=ans+a[i-1]
    for i in range(n//2,n-1):
        ans=ans+a[i-n//2+1]
    ans=ans+a[n//2-1]
    print(ans)

else:
    for i in range(1,n//2):
        ans=ans+a[i-1]
    for i in range(n//2,n-1):
        ans=ans+a[i-n//2+1]
    ans=ans+a[n//2-1]
    print(ans)
Buggy code:
n = int(input())
A = list(map(int,input().split()))

A.sort(reverse=True)

ans = A[0]
for i in range(n-2):
    print((i//2) + 1)
    ans += A[(i//2) + 1]

print(ans)

Fixed code:
n = int(input())
A = list(map(int,input().split()))

A.sort(reverse=True)

ans = A[0]
for i in range(n-2):
    ans += A[(i//2) + 1]

print(ans)
Buggy code:
n,k=map(int,input().split())
a=list(map(int,input().split()))
a.sort()
mod=10**9+7
ans=1
i=0
j=-1
k_1=k
while k_1>1:
  if a[i]*a[i+1]>a[j]*a[j-1]:
    ans=ans*a[i]*a[i+1]%mod
    i+=2
    k_1-=2
  else:
    ans=ans*a[j]%mod
    j-=1
    k_1-=1
if k_1==1:
  ans=ans*a[j]%mod
if a[-1]<0 and k%2==1:
  for i in a[n-k:]:
    ans=ans*i%mod
print(ans)

Fixed code:
n,k=map(int,input().split())
a=list(map(int,input().split()))
a.sort()
mod=10**9+7
ans=1
i=0
j=-1
k_1=k
while k_1>1:
  if a[i]*a[i+1]>a[j]*a[j-1]:
    ans=ans*a[i]*a[i+1]%mod
    i+=2
    k_1-=2
  else:
    ans=ans*a[j]%mod
    j-=1
    k_1-=1
if k_1==1:
  ans=ans*a[j]%mod
if a[-1]<0 and k%2==1:
  ans=1
  for i in a[n-k:]:
    ans=ans*i%mod
print(ans)
Buggy code:
from collections import deque
N,K=map(int,input().split())
A=list(map(int,input().split()))
A.sort(reverse=True)
d=deque(A)


l=[]
if K%2==0 or (K%2==1 and A[0]>0):
  for i in range(K//2):
    if d[0]*d[1]>=d[-1]*d[-2] and d[2]>0:
      l.append(d.popleft())
      l.append(d.popleft())
    else:
      l.append(d.pop())
      l.append(d.pop())
  if K%2==1:
    l.append(d[0])
else:
  for i in range(K):
    l.append(d.popleft())
      
ans=1
for i in l:
  ans*=i
print(ans%(10**9+7))

Fixed code:
from collections import deque
N,K=map(int,input().split())
A=list(map(int,input().split()))
A.sort(reverse=True)
d=deque(A)
import time
l=[]
if K%2==0 or (K%2==1 and A[0]>=0):
  for i in range(K//2):
    if d[0]*d[1]>d[-1]*d[-2] and (i==K//2-1 or (len(d)>2 and  d[2]>0)):
      l.append(d.popleft())
      l.append(d.popleft())
    else:
      l.append(d.pop())
      l.append(d.pop())
  if K%2==1:
    l.append(d[0])
else:
  for i in range(K):
    l.append(d.popleft())
      
ans=1
for i in l:
  ans*=i
  ans%=10**9+7
print(ans)
Buggy code:
mod=10**9+7
n,k=map(int,input().split())
A=list(map(int,input().split()))
count=k

B,C=[],[]
for i in A:
    if i>=0:B.append(i)
    else:C.append(i)

B.sort()
C.sort(key=lambda x:abs(x))

ans,flag=1,1
while k!=0:
    if k>=2:
        point=0
        if len(B)>=2 and len(C)>=2:
            if B[-1]*B[-2]>C[-1]*C[-2]:
                ans *=B.pop()
                point=1
            else:ans *=C.pop()*C.pop()
        elif len(B)>=2:ans *=B.pop()*B.pop()
        elif len(C)>=2:ans *=C.pop()*C.pop()
        else:flag=0
        k -=2-point
    else:
        if len(B)>=1:ans *=B.pop()
        else:flag=0
        k -=1
    ans %=mod

if flag:print(ans)
else:
    ans=1
    A=sorted(reverse=True)
    for i in range(count):
        ans *=A[i]
        ans %=mod
    print(ans)

Fixed code:
mod=10**9+7
n,k=map(int,input().split())
A=list(map(int,input().split()))
K=k

B,C=[],[]
for i in A:
    if i>=0:B.append(i)
    else:C.append(i)

B.sort()
C.sort(key=lambda x:abs(x))

ans,flag=1,1
while k!=0:
    if k>=2:
        if len(B)>=2 and len(C)>=2:
            if B[-1]*B[-2]>C[-1]*C[-2]:
                ans *=B.pop()
                k -=1
            else:
                ans *=C.pop()*C.pop()
                k -=2
        elif len(B)>=2:
            ans *=B.pop()*B.pop()
            k -=2
        elif len(C)>=2:
            ans *=C.pop()*C.pop()
            k -=2
        else:
            k -=k
            flag=0
    else:
        if len(B)>=1:ans *=B.pop()
        else:flag=0
        k -=1

    ans %=mod

if flag:print(ans)
else:
    ans=1
    A=sorted(A,key=lambda x:abs(x))
    for i in range(K):
        ans *=A[i]
        ans %=mod
    print(ans)
Buggy code:
from functools import reduce

n, k = map(int, input().split())
a = list(map(int, input().split()))

mod = 10 ** 9 + 7
if len(list(filter(lambda v: v < 0, a))) == n:
    a.sort(key=lambda v: (abs(v)))
    print(reduce(lambda ac, v: ((ac * v) + mod) % mod, a[:k], 1))
    print("hello")
    exit()

a.sort(key=lambda v: (abs(v)), reverse=True)
ans = 1
mn = 0
for v in a[:k]:
    if v < 0:
        mn += 1
    ans *= abs(v)
    ans %= mod

if mn % 2 == 0:
    print(ans)
    exit()

mnp, mnn = 0, 0
for v in a[k - 1 :: -1]:
    if mnp != 0 and mnn != 0:
        break
    elif mnp == 0 and v > 0:
        mnp = v
    elif mnn == 0 and v < 0:
        mnn = v
mxp, mxn = 0, 0
for v in a[k:]:
    if mxp != 0 and mxn != 0:
        break
    elif mxp == 0 and v > 0:
        mxp = v
    elif mxn == 0 and v < 0:
        mxn = v
x, y = mxp, mnn
if mnp != 0 and mxn * mnn > mxp * mnp:
    x, y = mxn, mnp
ans *= pow(abs(y), mod - 2, mod)
ans %= mod
ans *= abs(x)
ans %= mod
print(ans)


Fixed code:
from functools import reduce

n, k = map(int, input().split())
a = list(map(int, input().split()))

a.sort(key=lambda v: abs(v), reverse=True)
mod = 10 ** 9 + 7
if n == k:
    print(reduce(lambda ac, v: ac * v % mod, a, 1))
    exit()
elif len(list(filter(lambda v: v < 0, a))) == n and k % 2 == 1:
    print(reduce(lambda ac, v: ac * v % mod, a[n - k :], 1))
    exit()

ans = 1
mn = 0
for v in a[:k]:
    if v < 0:
        mn += 1
    ans *= abs(v)
    ans %= mod

if mn % 2 == 0:
    print(ans)
    exit()

mnp, mnn = 0, 0
for v in a[k - 1 :: -1]:
    if mnp != 0 and mnn != 0:
        break
    elif mnp == 0 and v > 0:
        mnp = v
    elif mnn == 0 and v < 0:
        mnn = v
mxp, mxn = 0, 0
for v in a[k:]:
    if mxp != 0 and mxn != 0:
        break
    elif mxp == 0 and v > 0:
        mxp = v
    elif mxn == 0 and v < 0:
        mxn = v
x, y = mxp, mnn
if mnp != 0 and mxn * mnn > mxp * mnp:
    x, y = mxn, mnp
ans *= pow(abs(y), mod - 2, mod)
ans %= mod
ans *= abs(x)
ans %= mod
print(ans)
Buggy code:
n,k=map(int,input().split())
A=sorted(list(map(int,input().split())))
mod=10**9+7

if A[-1]<0 and k%2==1:
    now=1
    for i in range(k):
        now*= A[-i-1]
        now%=mod
    print(now) ;exit()

l=0 ; r=n-1
ans=1
if k%2==1:
    ans=A[-1]

for i in range(k//2):
    mi=A[l]*A[l+1]
    pl=A[r]*A[r-1]
    if mi>pl:
        ans*=mi
        l+=2
    else:
        ans*=pl
        r-=2
print(ans)

Fixed code:
n,k=map(int,input().split())
A=list(map(int,input().split()))
A.sort()

mod=10**9+7

if A[-1]<0 and k%2==1:
    now=1
    for i in range(k):
        now= now*A[-i-1]%mod
        # now%=mod
    print(now) ;exit()

l=0 ; r=n-1
ans=1
if k%2==1:
    ans=A[-1]
    r-=1

for i in range(k//2):
    mi=A[l]*A[l+1]
    pl=A[r]*A[r-1]
    if mi>pl:
        ans= ans*mi%mod
        l+=2
    else:
        ans= ans*pl%mod
        r-=2
print(ans%mod)
Buggy code:
def main():
    import sys
    def input(): return sys.stdin.readline().rstrip()
    n, k = map(int, input().split())
    a = list(map(int, input().split()))
    mod = 10 ** 9+ 7
    ans = 1

    def answer(a):
        ans =1
        for x in a:
            ans *= x
            ans %= mod
        return ans

    if n == k:
        print(answer(a))
        return
    a.sort(reverse=True, key= lambda x:abs(x))
    if sum(x<0 for x in a[:k])%2 == 0:
        print(answer(a[:k])
    else:
        if all(x < 0 for x in a):
            print(answer(a[-k:]))
        else:
            try:
                x1, y1= min([x for x in a[:k] if x > 0]), min([x for x in a[k:] if x < 0])
            except ValueError:
                x1, y1 = 1, 0
            try:
                x2, y2= max([x for x in a[:k] if x < 0]),\
                    max([x for x in a[k:] if x >= 0])
            except ValueError:
                x2, y2 = 1, 0
            if abs(x2*y1) > abs(x1*y2):           
                a[a.index(x1)] = y1
            else:
                a[a.index(x2)] = y2
            print(answer(a[:k]))
            


if __name__ == '__main__':
    main()

Fixed code:
def main():
    import sys
    def input(): return sys.stdin.readline().rstrip()
    n, k = map(int, input().split())
    a = list(map(int, input().split()))
    mod = 10 ** 9+ 7
    ans = 1

    def answer(a):
        ans =1
        for x in a:
            ans *= x
            ans %= mod
        return ans

    if n == k:
        print(answer(a))
        return
    a.sort(reverse=True, key= lambda x:abs(x))
    if sum(x<0 for x in a[:k])%2 == 0:
        print(answer(a[:k]))
    else:
        if all(x < 0 for x in a):
            print(answer(a[-k:]))
        else:
            try:
                x1, y1= min([x for x in a[:k] if x > 0]), min([x for x in a[k:] if x < 0])
            except ValueError:
                x1, y1 = 1, 0
            try:
                x2, y2= max([x for x in a[:k] if x < 0]),\
                    max([x for x in a[k:] if x >= 0])
            except ValueError:
                x2, y2 = 1, 0
            if abs(x2*y1) > abs(x1*y2):           
                a[a.index(x1)] = y1
            else:
                a[a.index(x2)] = y2
            print(answer(a[:k]))
            


if __name__ == '__main__':
    main()
Buggy code:
"""
9 5
-4 -3 -2 -1 0 1 2 3
"""

N,K = map(int,input().split())
A = list(map(int,input().split()))
A.sort()
Am = []
Ap = []
for a in A:
    if a < 0:
        Am.append(a)
    else:
        Ap.append(a)

mod = 10**9 + 7

ans = 1

if N == K:
    for a in A:
        ans *= a
        ans %= mod

elif A[-1] < 0:
    if K % 2 = 1
        for i in range(K):
            ans *= Am[-1-i]
            ans %= mod
    else:
        for i in range(K):
            ans *= Am[i]
            ans %= mod

else:
    if K%2 == 1:
        ans *= Ap[-1]
        ans %= mod
        K -= 1
        del Ap[-1]
    Amd = []     
    Apd = []
    for i in range(len(Ap)//2):
        Apd.append(Ap[-1-(2*i)]*Ap[-1-(2*i+1)])
    for i in range(len(Am)//2):
        Amd.append(Am[2*i]*Am[2*i+1])
    Apd.append(-1)
    Amd.append(-1)
    
    ip = 0
    im = 0
    while K > 0:
        if Apd[ip] >= Amd[im]:
            ans *= Apd[ip]
            ip += 1
        else:
            ans *= Amd[im]
            im += 1
        ans %= mod
        K -= 2


ans %= mod
print(ans)




Fixed code:
"""
9 5
-4 -3 -2 -1 0 1 2 3
"""

N,K = map(int,input().split())
A = list(map(int,input().split()))
A.sort()
Am = []
Ap = []
for a in A:
    if a < 0:
        Am.append(a)
    else:
        Ap.append(a)

mod = 10**9 + 7

ans = 1

if N == K:
    for a in A:
        ans *= a
        ans %= mod

elif A[-1] < 0:
    if K % 2 == 1:
        for i in range(K):
            ans *= Am[-1-i]
            ans %= mod
    else:
        for i in range(K):
            ans *= Am[i]
            ans %= mod

else:
    if K%2 == 1:
        ans *= Ap[-1]
        ans %= mod
        K -= 1
        del Ap[-1]
    Amd = []     
    Apd = []
    for i in range(len(Ap)//2):
        Apd.append(Ap[-1-(2*i)]*Ap[-1-(2*i+1)])
    for i in range(len(Am)//2):
        Amd.append(Am[2*i]*Am[2*i+1])
    Apd.append(-1)
    Amd.append(-1)
    
    ip = 0
    im = 0
    while K > 0:
        if Apd[ip] >= Amd[im]:
            ans *= Apd[ip]
            ip += 1
        else:
            ans *= Amd[im]
            im += 1
        ans %= mod
        K -= 2


ans %= mod
print(ans)
Buggy code:
n, k = map(int, input().split())
a = list(map(int, input().split()))
mod = 10 ** 9 + 7

plus = []
minus = []
for i in a:
    if i > 0: plus.append(i)
    if i < 0: minus.append(-i)
plus.sort(reverse=True)
minus.sort(reverse=True)

ans = 1
if k == n:
    for x in a[:k]:
        ans = (ans * x) % mod
elif k > len(plus) + len(minus):
    ans = 0
elif n == len(plus):
    for x in plus[:k]:
        ans = (ans * x) % mod
elif n == len(minus):
    for x in minus[:k]:
        ans = (ans * x) % mod
    if n % 2 == 1:
        ans = (ans * -1) % mod
else:
    i, j = 0, 0
    while i + j < k:
        x_p = (plus[i] * plus[i + 1]) % mod if i < len(plus) - 1 else 1
        x_m = (minus[j] * minus[j + 1]) % mod if j < len(minus) - 1 else 1
        if x_p > x_m:
            ans = (ans * x_p) % mod
            i += 2
        else:
            ans = (ans * x_m) % mod
            j += 2
print(ans)

Fixed code:
n, k = map(int, input().split())
a = list(map(int, input().split()))
mod = 10 ** 9 + 7

plus = []
minus = []
for i in a:
    if i >= 0: plus.append(i)
    if i < 0: minus.append(-i)
plus.sort(reverse=True)
minus.sort(reverse=True)

ans = 1
if k == n:
    for x in a:
        ans = (ans * x) % mod
elif n == len(plus):
    for x in plus[:k]:
        ans = (ans * x) % mod
elif n == len(minus):
    if k % 2 == 1:
        ans = -1
        minus.sort()
    for x in minus[:k]:
        ans = (ans * x) % mod
else:
    i, j = 0, 0
    if k % 2 == 1:
        ans = plus[0]
        i += 1
    while i + j != k:
        x_p = plus[i] * plus[i + 1] if i < len(plus) - 1 else 0
        x_m = minus[j] * minus[j + 1] if j < len(minus) - 1 else 0
        if x_p > x_m:
            ans = (ans * x_p) % mod
            i += 2
        else:
            ans = (ans * x_m) % mod
            j += 2
print(ans)
Buggy code:
n,k = map(int, input().split())
a =list(map(int, input().split()))
ans =1

if n == k:
   for i in a:
       ans *= i
       if abs(ans) >10**9+7:
           ans = ans%(10**9+7)

elif all(i <= 0 for i in a) and k%2 ==1:
    a.sort()
    for i in range(k):
        ans *= a[i]
        if abs(ans) > 10 ** 9 + 7:
            ans = ans % (10 ** 9 + 7)

else:
    am =[]
    ap =[]

    a.sort(key = abs,reverse = True)
    amax = a[:k]
    amin = a[k:]
    c=1
    if 0 in amax:
        ans = 0
    else:
        for i in amax:
            if i<0:
                am.append(i)
                c *=-1
            elif i>0:
                ap.append(i)
        if c ==1:
            for i in amax:
                ans *= i
                if abs(ans) > 10 ** 9 + 7:
                    ans = ans % (10 ** 9 + 7)
        else:

            if min(amin)/min(ap) > max(amin)/max(am):
                amax.remove(max(am))
                amax.append(max(amin))
            else:
                amax.remove(min(ap))
                amax.append(min(amin))
            for i in amax:
                ans *= i
                if abs(ans) > 10 ** 9 + 7:
                    ans = ans % (10 ** 9 + 7)

print(ans% (10 ** 9 + 7))

Fixed code:
n,k = map(int, input().split())
a =list(map(int, input().split()))
ans =1

if n == k:
   for i in a:
       ans *= i
       if abs(ans) >10**9+7:
           ans = ans%(10**9+7)

elif all(i <= 0 for i in a) and k%2 ==1:
    a.sort(reverse = True)
    for i in range(k):
        ans *= a[i]
        if abs(ans) > 10 ** 9 + 7:
            ans = ans % (10 ** 9 + 7)

else:
    am =[]
    ap =[]

    a.sort(key = abs,reverse = True)
    amax = a[:k]
    amin = a[k:]
    c=1
    if 0 in amax:
        ans = 0
    else:
        for i in amax:
            if i<0:
                am.append(i)
                c *=-1
            elif i>0:
                ap.append(i)
        if c ==1:
            for i in amax:
                ans *= i
                if abs(ans) > 10 ** 9 + 7:
                    ans = ans % (10 ** 9 + 7)
        else:
            if ap == []:
                amax.remove(max(am))
                amax.append(max(amin))

            elif max(am)*min(amin) < min(ap)*max(amin):
                amax.remove(max(am))
                amax.append(max(amin))
            else:
                amax.remove(min(ap))
                amax.append(min(amin))
            for i in amax:
                ans *= i
                if abs(ans) > 10 ** 9 + 7:
                    ans = ans % (10 ** 9 + 7)

print(ans % (10 ** 9 + 7))
Buggy code:
import sys

mod = 10 ** 9 + 7
N, K = map(int,input().split())
A = list(map(int,input().split()))
if all([a < 0 for a in A]):
    if K % 2 == 0:
        A.sort(reverse = True)
        ans = 1
        for i in range(K):
            ans *= A[i]
            ans %= mod
        print(ans)
        sys.exit()
    else:
        A.sort()
        ans = 1
        for i in range(K):
            ans *= A[i]
            ans %= mod
        print(ans)
        sys.exit()

A.sort()
l = 0
r = N - 1
ans = 1

for _ in range(K // 2):
    if A[l] * A[l+1] > A[r] * A[r-1]:
        ans *= A[l] * A[l+1]
        ans %= mod
        l += 2
    else:
        ans *= A[r] * A[r-1]
        ans %= mod
        r -= 2

if K % 2 == 1:
    ans *= A[l]

print(ans)

Fixed code:
import sys

mod = 10 ** 9 + 7

N, K = map(int,input().split())
A = list(map(int,input().split()))

A.sort(reverse = True)

if A[0] < 0 and K % 2 == 1:
    ans = 1
    for i in range(K):
        ans *= A[i]
        ans %= mod
    print(ans)
    sys.exit()

l = 0
r = N-1

ans = 1
if K % 2 == 1:
    ans *= A[0]
    l += 1

for _ in range(K // 2):
    if A[l] * A[l+1] > A[r] * A[r-1]:
        ans *= A[l] * A[l+1]
        ans %= mod
        l += 2
    else:
        ans *= A[r] * A[r-1]
        ans %= mod
        r -= 2

print(ans)
Buggy code:
n,k = map(int,input().split())
a = list(map(int,input().split()))

s = sorted(a,reverse=True)
mod = 10**9 + 7
ans = 1

if k % 2 == 1 and s[0] < 0:
        for i in range(k):
            ans = ans * s[i] % mod
        print(ans)
        exit()

l = 0
r = n - 1
if k % 2 == 1:
  ans = ans * s[r]
  r -= 1

for _ in range(k // 2):
  ml = s[l] * s[l + 1]
  mr = s[r] * s[r - 1]
  if ml > mr:
    ans = ans * ml % mod
    l += 2
  else:
    ans = ans * mr % mod
    r -= 2

print(ans)

Fixed code:
n,k = map(int,input().split())
a = list(map(int,input().split()))

s = sorted(a,reverse=True)
mod = 10**9 + 7
ans = 1

if k % 2 == 1 and s[0] < 0:
        for i in range(k):
            ans = ans * s[i] % mod
        print(ans)
        exit()

l = 0
r = n - 1
if k % 2 == 1:
  ans = ans * s[l]
  l += 1

for _ in range(k // 2):
  ml = s[l] * s[l + 1]
  mr = s[r] * s[r - 1]
  if ml > mr:
    ans = ans * ml % mod
    l += 2
  else:
    ans = ans * mr % mod
    r -= 2

print(ans)
Buggy code:
n,k=map(int,input().split())
arr=list(map(int,input().split()))
arr.sort(reverse=True)
n=len(arr)
l=0
r=n-1
ans=1
if k%2==1:
    ans=arr[0]
    l=1
m=10**9+7
if ans<0:
    for i in range(k):
        ans*=arr[i]
        ans%=m
    print(ans)
    quit()
for i in range(k//2):
    po=arr[l]*arr[l+1]
    ne=arr[r]*arr[r-1]
    if po>=ne:
        l+=2
        ans*=po
        ans%=m
    else:
        r-=2
        ans*=ne
        ans%=m
print(ans)



Fixed code:
n,k=map(int,input().split())
arr=list(map(int,input().split()))
arr.sort(reverse=True)
n=len(arr)
l=0
r=n-1
ans=1
if k%2==1:
    ans=arr[0]
    l=1
m=10**9+7
if ans<0:
    ans=1
    for i in range(k):
        ans*=arr[i]
        ans%=m
    print(ans)
    quit()
for i in range(k//2):
    po=arr[l]*arr[l+1]
    ne=arr[r]*arr[r-1]
    if po>=ne:
        l+=2
        ans*=po
        ans%=m
    else:
        r-=2
        ans*=ne
        ans%=m
print(ans)
Buggy code:
n, k = map(int, input().split())

a = list(map(int, input().split()))
a_pos = list(sorted(filter(lambda x: x > 0, a), reverse=True))
a_neg = list(sorted(filter(lambda x: x < 0, a)))

mod = 10 ** 9 + 7
ans = 1

if len(a_pos) == 0 and k % 2:
    for i in a_neg[:k]:
        ans = ans * i % mod
    print(ans)
    exit()

while k > 0:
    if k == 1 or len(a_neg) <= 1:
        if len(a_pos) == 0:
            ans *= a_neg.pop()
        elif len(a_pos) > 0:
            ans *= a_pos.pop()
        k -= 1
    elif len(a_pos) <= 1:
        ans *= a_neg.pop() * a_neg.pop()
        k -= 2
    
    elif a_pos[0] * a_pos[1] > a_neg[0] * a_neg[1]:
        ans *= a_pos.pop(0)
        k -= 1
    elif a_pos[0] * a_pos[1] <= a_neg[0] * a_neg[1]:
        ans *= a_neg.pop(0) * a_neg.pop(0)
        k -= 2
    ans %= mod

print(ans)

Fixed code:
n, k = map(int, input().split())

a = list(map(int, input().split()))
a_pos = sorted([i for i in a if i >= 0])
a_neg = sorted([i for i in a if i < 0], reverse=True)

mod = 10 ** 9 + 7
ans = 1

if len(a_pos) == 0 and k % 2:
    for i in a_neg[:k]:
        ans = ans * i % mod
    print(ans)
    exit()

while k > 0:
    if k == 1 or len(a_neg) <= 1:
        if len(a_pos) == 0:
            ans *= a_neg.pop()
        elif len(a_pos) > 0:
            ans *= a_pos.pop()
        k -= 1
    elif len(a_pos) <= 1:
        ans *= a_neg.pop() * a_neg.pop()
        k -= 2
    
    elif a_pos[-1] * a_pos[-2] > a_neg[-1] * a_neg[-2]:
        ans *= a_pos.pop()
        k -= 1
    elif a_pos[0] * a_pos[1] <= a_neg[-1] * a_neg[-2]:
        ans *= a_neg.pop() * a_neg.pop()
        k -= 2
    ans %= mod

else:
    print(ans)