qyliang/CodeNanoFix huggingface dataset:
Buggy code:
def main():
    n = int(input())
    a = list(map(int, input().split()))
    a_sort = sorted(a, reverse=True)
    alice = 0
    bob = 0
    for i in range(n):
        print(i)
        if i % 2 == 0:
            alice += a_sort[i]
        else:
            bob += a_sort[i]
    res = alice - bob
    print(res)
if __name__ == '__main__':
    main()

Fixed code:
def main():
    n = int(input())
    a = list(map(int, input().split()))
    a_sort = sorted(a, reverse=True)
    alice = 0
    bob = 0
    for i in range(n):
        if i % 2 == 0:
            alice += a_sort[i]
        else:
            bob += a_sort[i]
    res = alice - bob
    print(res)
if __name__ == '__main__':
    main()
Buggy code:
if __name__ == '__main__':
    n = int(input())
    k = [int(i) for i in input().split()]
    a = 0
    b = 0
    k.sort(reverse=True)
    print(k)
    flag = True
    for i in k:
        if flag == True:
            a+=i
            flag=False
        else:
            b+=i
            flag=True
    print(a-b)


Fixed code:
if __name__ == '__main__':
    n = int(input())
    k = [int(i) for i in input().split()]
    a = 0
    b = 0
    k.sort(reverse=True)
    flag = True
    for i in k:
        if flag == True:
            a+=i
            flag=False
        else:
            b+=i
            flag=True
    print(a-b)
Buggy code:
n=int(input())
A=sorted(list(map(int,input().split()),reverse=True)
print(sum(a[::2])-sum(a[1::2]))

Fixed code:
n=int(input())
a = sorted(list(map(int,input().split())),reverse=True)
print(sum(a[::2])-sum(a[1::2]))
Buggy code:
n = int(input())
a = list(map(int, input().split()))

a.sort(reverse=True)
print(sun(a[::2])-sun(a[1::2]))

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

a.sort(reverse=True)
print(sum(a[::2])-sum(a[1::2]))
Buggy code:
n=int(input())
li=list(map(int,input().split()))
li.sort
a=[]
b=[]
for i in range(n):
  if n%2==1:
    if i%2==0:
      a.append(li[i])
    else:
      b.appemd(li[i])
  else:
    if i%2==0:
      b.append(li[i])
    else:
      a.append(li[i])
print(sum(a)-sum(b))

Fixed code:
n=int(input())
li=list(map(int,input().split()))
li.sort()
a=[]
b=[]
for i in range(n):
  if n%2==1:
    if i%2==0:
      a.append(li[i])
    else:
      b.append(li[i])
  else:
    if i%2==0:
      b.append(li[i])
    else:
      a.append(li[i])
print(sum(a)-sum(b))
Buggy code:
N=int(input())
A=list(map(int, input().split()))
A.sort(reverse=True)
sum1=0
sum2=0
for num in range(N+1):
  if num % 2 ==0:
    sum1 += num
  else:
    sum2 += num
print(sum1-sum2)

Fixed code:
N = int(input())
A = list(map(int, input().split()))
A.sort(reverse=True)
sum1=0
sum2=0
for num in range(N):
  if num % 2 == 0:
    sum1 += A[num]
  else:
    sum2 += A[num]
print(sum1 - sum2)
Buggy code:
n = int(input())
a = list(map(int, input().split()))
a.sort()
Alice = 0
Bob = 0
for i in range(n):
  if i % 2 == 0:
    Alice += a[i]
  else:
    Bob += a[i]
print(Alice - Bob)

Fixed code:
n = int(input())
a = list(map(int, input().split()))
a.sort(reverse = True)
Alice = 0
Bob = 0
for i in range(n):
  if i % 2 == 0:
    Alice += a[i]
  else:
    Bob += a[i]
print(Alice - Bob)
Buggy code:
n = int(input())
a = [int(i) for i in input().split()]
a.sort
print(sum(a[::2]) - sum(a[1::2]))

Fixed code:
n = int(input())
a = [int(i) for i in input().split()]
a.sort(reverse=True)
print(sum(a[::2]) - sum(a[1::2]))
Buggy code:
c = 0
N = int(input())
A = list(map(int, input().split(" ")))
A.sort()
for i in range(N):
    if i % 2 != 0:
        c+=A[i]
    else:
        c-=A[i]
print(c)

Fixed code:
c = 0
N = int(input())
A = list(map(int, input().split(" ")))
A.sort(reverse=True)
for i in range(N):
    if ((i+1) % 2) != 0:
        c+=A[i]
    else:
        c-=A[i]
print(c)
Buggy code:
N = int(input())
a = list(map(int,input().split()))
for i in range(N):
    if i % 2 ==0:
        Alice+=a[i]
    else:
        Bob+=a[i]
if Alice>Bob:
    print(Alice-Bob)
else:
    print(Bob-Alice)

Fixed code:
N = int(input())
a = list(map(int,input().split()))
Alice=0
Bob=0
a.sort(reverse=True)
for i in range(N):
    if i % 2 == 0:
        Alice+=a[i]
    else:
        Bob+=a[i]
if Alice>Bob:
    print(Alice-Bob)
else:
    print(Bob-Alice)
Buggy code:
n = int(input())
a = list(map(int, input().split()))
a.sort()

ans = 0
for i in range(len(a)):
  if i % 2 == 0:
    ans += a[i]
  else:
    ans -= a[i]

print(ans)

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

ans = 0
for i in range(len(a)):
  if i % 2 == 0:
    ans += a[i]
  else:
    ans -= a[i]

print(ans)
Buggy code:
n=int(input())
a=list(map(int,input().split()))
a=sorted(a)
b,c=0,0
for i in range(n):
    if i%2==0:
        b+=a[-i]
    else:
        c+=a[-i]
print(b-a)

Fixed code:
n=int(input())
a=list(map(int,input().split()))
a=sorted(a)
b,c=0,0
for i in range(n):
    if i%2==1:
        b+=a[-i-1]
    else:
        c+=a[-i-1]
print(c-b)
Buggy code:
N = int(input())
a = list(map(int,input().split()))

c = 0
a.sort(reverse=True)
for i in range(N):
  if i//2 == 0:
    c += a[i]
  else:
    c -= a[i]
print(a[i])

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

c = 0
a.sort(reverse=True)
for i in range(N):
  if i%2 == 0:
    c += a[i]
  else:
    c -= a[i]
print(c)
Buggy code:
N = int(input())
card = list(map(int,input().split()))

card.sort()

alice = 0
bob = 0
for i in range(len(card)):
    if i % 2 == 0:
        alice += card[i]
    else:
        bob += card[i]

print(alice - bob)

Fixed code:
N = int(input())
card = list(map(int,input().split()))

card.sort(reverse=True)

alice = 0
bob = 0
for i in range(len(card)):
    if i % 2 == 0:
        alice += card[i]
    else:
        bob += card[i]

print(alice - bob)
Buggy code:
x = int(input())
y = [int(i) for i in input().split()]
y.sort(reverse=True)
a = 0
b = 0
for i in range(1, x+1):
    if(i%2) != 0:
        a += y[i-1]
        print(y[i-1])
    else:
        b += y[i-1]
print(a-b)

Fixed code:
x = int(input())
y = [int(i) for i in input().split()]
y.sort(reverse=True)
a = 0
b = 0
for i in range(1, x+1):
    if (i % 2) != 0:
        a += y[i-1]
    else:
        b += y[i-1]
print(a-b)
Buggy code:
N = int(input())
A = sorted(map(int, input().split()))

print(sum(A[0::2]) - sum(A[1::2]))


Fixed code:
N = int(input())
A = sorted(map(int, input().split()), reverse=True)

print(sum(A[0::2]) - sum(A[1::2]))
Buggy code:
N=int(input())
a=list(map(int,input().split()))
na=sorted(a)
Alice=0
Bob=0

for i in range(N):
    if i%2==0:
        Alice+=na[i]
    else:
        Bob+=na[i]

print(Alice-Bob)

Fixed code:
N=int(input())
a=list(map(int,input().split()))
na=sorted(a,reverse=True)
Alice=0
Bob=0

for i in range(N):
    if i%2==0:
        Alice+=na[i]
    else:
        Bob+=na[i]

print(Alice-Bob)
Buggy code:
N = int(input())
LIST = list(map(int, input().split()))
LIST.sort()
Bob = 0
Alice = 0

while True:
    if len(LIST)==0:
        break
    Alice = Alice + LIST.pop()
    Bob = Bob + LIST.pop()

print(Alice - Bob)

Fixed code:
N = int(input())
LIST = list(map(int, input().split()))
LIST.sort()
Bob = 0
Alice = 0

while True:
    if len(LIST) == 0:
        break
    Alice = Alice + LIST.pop()
    if len(LIST) == 0:
        break
    Bob = Bob + LIST.pop()

print(Alice - Bob)
Buggy code:
X = int(input())
A = list(map(int, input().split()))
list.sort(A, reverse=True)
B=0
C=0
ans = 0
for i,j in enumerate(A):
    print(i)
    if (i+1)%2 != 0:
        B+=j
    else :
        C+=j
ans = B-C
print(ans)
    




Fixed code:
X = int(input())
A = list(map(int, input().split()))
list.sort(A, reverse=True)
B=0
C=0
ans = 0
for i,j in enumerate(A):
    if (i+1)%2 != 0:
        B+=j
    else :
        C+=j
ans = B-C
print(ans)
Buggy code:
N = input()
cards = list(map(int, input().split()))

apoint = 0
bpoint = 0
while True:
	apoint = max(cards)
	cards.remove(max(cards))

	if len(cards) == 0:
		break

	bpoint = max(cards)
	cards.remove(max(cards))

	if len(cards) == 0:
		break

dif = apoint - bpoint
print(dif)

Fixed code:
N = input()
cards = list(map(int, input().split()))

apoint = 0
bpoint = 0
while True:
	apoint += max(cards)
	cards.remove(max(cards), )

	if len(cards) == 0:
		break

	bpoint += max(cards)
	cards.remove(max(cards))

	if len(cards) == 0:
		break

dif = apoint - bpoint
print(dif)
Buggy code:
n = int(input())
a = list(map(int,input().split()))
a.sort()

c = a[::2]
d = a[1::2]
print(sum(d)-sum(c))

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

c = a[-2::-2]
d = a[-1::-2]

print(sum(d)-sum(c))
Buggy code:
N = int(input())
a = map(int, input().split())

a = sorted(a, reverse=True)

Alice = 0
Bob = 0

for i in range(0,N-1,2):
    Alice += a[i]
    Bob += a[i+1]


print(Alice-Bob)



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

a = sorted(a, reverse=True)

Alice = 0
Bob = 0

if N % 2 == 0:
    for i in range(0,N-1,2):
        Alice += a[i]
        Bob += a[i+1]
else:
    Alice += a[0]
    for i in range(1,N-1,2):
        Bob += a[i]
        Alice += a[i+1]


print(Alice-Bob)
Buggy code:
n = int(input())
AS = list(map(int,input().split()))

points = [0,0]#alice,bob
i = 0
while AS:
  point = max(AS)
  points[i] += point
  AS.remove(point)
  i = 1-i
print(point[0]-point[1])

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

points = [0,0]#alice,bob
i = 0
while AS:
  point = max(AS)
  points[i] += point
  AS.remove(point)
  i = 1-i
print(points[0]-points[1])
Buggy code:
input();
al=[int(i) for i in input().split()]
al.sort()[::-1]
print(sum(al[::2])-sum(al[1::2]))

Fixed code:
input();
al=[int(i) for i in input().split()]
al.sort()
al = al[::-1]
print(sum(al[::2])-sum(al[1::2]))
Buggy code:
n=int(input())
A=list(map(int,input().split(' ')))
A.sort()
a=0
b=0
i=0
while i < n:
    if i%2==0:
        a+= A[i]
    else:
        b += A[i]
    i += 1
print(a-b)

Fixed code:
n=int(input())
A=list(map(int,input().split(' ')))
A.sort()
a=0
b=0
i=0
while i < n:
    if i%2==0:
        a+= A[i]
    else:
        b += A[i]
    i += 1
print(abs(a-b))
Buggy code:
N = int(input())
A = [-int(x) for x in input().split()]
A.sort(reverse=True)
a, b, turn = 0, 0, 1
while len(A) != 0:
    if turn & 1:
        a += A.pop(0)
    else:
        b += A.pop(0)
    turn += 1
print(a-b)

Fixed code:
N = int(input())
A = [int(x) for x in input().split()]
A.sort()
a, b, turn = 0, 0, 1
while len(A) != 0:
    if turn & 1:
        a += A.pop()
    else:
        b += A.pop()
    turn += 1
print(a-b)
Buggy code:
n = int(input())
a = list(map(int, input().split()))
b = a.sort(reverse = True)
print(sum(b[::2])-sum(b[1::2]))

Fixed code:
n = int(input())
d = list(map(int, input().split()))
d.sort(reverse = True)
a = sum(d[::2])
b = sum(d[1::2])
print(a -b)
Buggy code:
n = int(input())
data = list(map(int, input().split()))
data_d = data.sort(reverse = True)
a = sum(data_d[::2])
b = sum(data_d[1::2])
print(a - b)

Fixed code:
n = int(input())
a = list(map(int, input().split()))
b = a.sort(reverse = True)
print(sum(a[::2])-sum(a[1::2]))
Buggy code:
n = input()
nums = list(map(int, input().split())).sort(reverse=True)
result = 0
for i, v in enumerate(nums):
    result += (1 if i % 2 == 0 else -1) * v
print(result)

Fixed code:
n = input()
nums = sorted(list(map(int, input().split())), reverse=True)
result = 0
for i, v in enumerate(nums):
    result += (1 if i % 2 == 0 else -1) * v
print(result)
Buggy code:
n = int(input())
a = sorted(list(map(int, input().split())))
ans = sum(a[::2]) - sum(a[1::2]) 
print(ans)


Fixed code:
n = int(input())
a = sorted(list(map(int, input().split())))
print(sum(a[::-2])-sum(a[-2::-2]))
Buggy code:
n = int(input())
a = list(map(int,input().split()))
suma = 0
sumb = 0
a.sort(reverse == True)

for i in range(len(a)):
  if a[i]%2 == 0:
    suma += a[i]
  else:
    sumb += a[i]
    
print(suma-sumb)

Fixed code:
n = int(input())
a = list(map(int,input().split()))
suma = 0
sumb = 0
a.sort(reverse = True)
 
for i in range(len(a)):
  if i%2 == 0:
    suma += a[i]
  else:
    sumb += a[i]
    
print(suma-sumb)
Buggy code:
N = int(input())
card = list(map(int,input().split()))
sorted_card = sorted(card)
Alice = 0
Bob = 0

for i in range(N):
    if i % 2 == 0:
        Alice += sorted_card[i]
    else:
        Bob += sorted_card[i]

print(Alice - Bob)

Fixed code:
N = int(input())
card = list(map(int,input().split()))
sorted_card = sorted(card,reverse=True)
Alice = 0
Bob = 0

for i in range(N):
    if i == 0 or i % 2 == 0:
        Alice += sorted_card[i]
    else:
        Bob += sorted_card[i]

print(Alice - Bob)
Buggy code:
# 2020-08-30, Sun

n = int(input())
lis = sorted(list(map(int, input().split())))
a = 0
b = 0

for i in lis[::2]:
    a += i

for i in lis[1::2]:
    b += i

print(a - b)

Fixed code:
# 2020-08-30, Sun

n = int(input())
lis = sorted(list(map(int, input().split())), reverse=True)
a = 0
b = 0

for i in lis[::2]:
    a += i

for i in lis[1::2]:
    b += i

print(a - b)
Buggy code:
N = int(input())
A = list(map(int, input().split()))
Alice = 0
A.sort()
for i in range(1,N,2):
  Alice += A[i]
print(2*Alice - sum(A))

Fixed code:
N = int(input())
A = list(map(int, input().split()))
Alice = 0
A.sort(reverse=True)
for i in range(0,N,2):
  Alice += A[i]
print(2*Alice - sum(A))
Buggy code:
n = int(input())
c = sorted(list(map(int, input().split())))
print(sum(c[0::2]) - sum(c[1::2]))

Fixed code:
n = int(input())
c = sorted(list(map(int, input().split())), reverse = True)
print(sum(c[0::2]) - sum(c[1::2]))
Buggy code:
N = int(input())
A = [int(i) for i in input().split()]
A.sort()

if N == 1:
	print(A[0])
else:
	Alice = sum(A[0::2])
	Bob = sum(A[1::2])
	print(Alice-Bob)

Fixed code:
N = int(input())
A = [int(i) for i in input().split()]
A.sort(reverse=True)

if N == 1:
	print(A[0])
else:
	Alice = sum(A[0::2])
	Bob = sum(A[1::2])
	print(Alice-Bob)
Buggy code:
N=int(input())
A=map(int, input())
sortedA=sorted(A, reverse=True)
Bob=0
Alice=0
for i in range(len(A)):
  # print(i)
  if i == 0 or i%2==0:
    Alice+=sortedA[i]
  else:
    Bob +=sortedA[i]
print(Alice-Bob)


Fixed code:
N=int(input())
A=list(map(int, input().split()))
sortedA=sorted(A, reverse=True)
Bob=0
Alice=0
for i in range(len(A)):
  # print(i)
  if i == 0 or i%2==0:
    Alice+=sortedA[i]
  else:
    Bob +=sortedA[i]
print(Alice-Bob)
Buggy code:
n=int(input())
li=sorted(list(map(int,input().split())))
a=0
b=0

for i in range(n):
  if i%0==0:
    a+=li[i]
  else:
    b+=li[i]

print(a-b)

Fixed code:
n=int(input())
li=sorted(list(map(int,input().split())),reverse=True)
a=0
b=0

for i in range(n):
  if i%2==0:
    a+=li[i]
  else:
    b+=li[i]
print(a-b)
Buggy code:
n = int(input())
card = list(map(int,input().split()))

a = 0
b = 0

card.sort(reverse=True)

#print(card)
for i in range(1,n+1):
  print(a,b)
  if i % 2 == 0:
    b = b + card[i-1]
  else:
    a += card[i-1]
#print(a,b)
print(a - b)

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

a = 0
b = 0

card.sort(reverse=True)

#print(card)
for i in range(1,n+1):
#  print(a,b)
  if i % 2 == 0:
    b = b + card[i-1]
  else:
    a += card[i-1]
#print(a,b)
print(a - b)
Buggy code:
N = int(input())
A = list(map(int,input().split()))

A.sort(reverse=True)
print(A)
print((sum(A[::2])) - sum(A[1::2]))

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

A.sort(reverse=True)
print((sum(A[::2])) - sum(A[1::2]))
Buggy code:
N = int(input())
card_values = list(map(int, input().split(" ")))

card_values_sorted = sorted(card_values, reverse=True)
print(card_values_sorted)

Alice_score = 0
Bob_score = 0
for i in range(N):
    if i%2 == 0:
        Alice_score += card_values_sorted[i]
    else:
        Bob_score += card_values_sorted[i]

print(Alice_score - Bob_score)

Fixed code:
N = int(input())
card_values = list(map(int, input().split(" ")))
 
card_values_sorted = sorted(card_values, reverse=True)

Alice_score = 0
Bob_score = 0
for i in range(N):
    if i%2 == 0:
        Alice_score += card_values_sorted[i]
    else:
        Bob_score += card_values_sorted[i]
 
print(Alice_score - Bob_score)
Buggy code:
a = int(input())
b = list(map(int,input().split()))
b.sort()
c = sum(b[::2])
d = sum(b[1::2])
print(d-c)

Fixed code:
a = int(input())
b = list(map(int,input().split()))
b.sort(reverse=True)
c = sum(b[::2])
d = sum(b[1::2])
print(c-d)
Buggy code:
input();a = sorted(list(map(int, input().split())));print(sum(a[:: 2]) - sum(a[1:: 2]))

Fixed code:
input();a = sorted(list(map(int, input().split())));print(sum(a[-1::-2]) - sum(a[-2::-2]))
Buggy code:
import math
N=int(input())
a=list(map(int,input().split()))
a=sorted(a)
print(a)
alice=0
bob=0
if(N%2==0):
    for i in range(0,N-1,2):
        alice=a[i+1]+alice
        bob=a[i]+bob
else:
    for i in range(1,N-1,2):
        alice=a[i+1]+alice
        bob=a[i]+bob
    alice=alice+a[0]
print(alice-bob)

Fixed code:
import math
N=int(input())
a=list(map(int,input().split()))
a=sorted(a)
alice=0
bob=0
if(N%2==0):
    for i in range(0,N-1,2):
        alice=a[i+1]+alice
        bob=a[i]+bob
else:
    for i in range(1,N-1,2):
        alice=a[i+1]+alice
        bob=a[i]+bob
    alice=alice+a[0]
print(alice-bob)
Buggy code:
n=int(input())
Aseq=input().split()
A=[]
for i in range(n):
    A.append(int(Aseq[i]))
A.sort()
AA=A[0::2]
AB=A[1::2]
print(sum(AA)-sum(AB))

Fixed code:
n=int(input())
Aseq=input().split()
A=[]
for i in range(n):
    A.append(int(Aseq[i]))
A.sort(reverse=True)
AA=A[0::2]
AB=A[1::2]
print(sum(AA)-sum(AB))
Buggy code:
N = int(input())
num = list(map(str, input().split()))
num.sort(reverse=True)
print(sum(num[::2])-sum(num[1::2]))


Fixed code:
N = int(input())
num = list(map(int, input().split()))
num.sort(reverse=True)
print(sum(num[0::2])-sum(num[1::2]))
Buggy code:
n = int(input())

num_list = [ int(v) for v in input().split() ]

a_sum, b_sum = 0, 0

for i in range(n):
  if i % 2 == 0:
    a_sum += num_list[i]
  else:
    b_sum += num_list[i]

print(a_sum - b_sum)

Fixed code:
n = int(input())

num_list = sorted([ int(v) for v in input().split() ])

a_sum, b_sum = 0, 0

for i in range(n):
  if i % 2 == 0:
    a_sum += num_list[i]
  else:
    b_sum += num_list[i]

print(abs(a_sum-b_sum))
Buggy code:
n = int(input())
A = sorted(list(map(int, input().split())), reverse=True)
alice = sum(A[::2])
bob = sum(A[:1:2])
print(alice - bob)


Fixed code:
n = int(input())
A = sorted(list(map(int, input().split())), reverse=True)
alice = sum(A[::2])
bob = sum(A[1::2])
print(alice - bob)
Buggy code:
n = int(input())
m = map(int, input().split())
m.sort(reverse=True)
a = 0
b = 0
t = True
for i in m:
  if t:
    a += i
  else:
    b += i
  t = True if t else False
print(a-b)

Fixed code:
n = int(input())
m = list(map(int, input().split()))
m.sort(reverse=True)
a = 0
b = 0
t = True
for i in m:
  if t:
    a += i
  else:
    b += i
  t = True if not(t) else False
print(a-b)
Buggy code:
N = int(input())
cards = list(map(int, input().split()))
l.sort(reverse=True)
print(sum(cards[0::2]) - sum(cards[1::2]))

Fixed code:
N = int(input())
cards = list(map(int, input().split()))
cards.sort(reverse=True)
print(sum(cards[0::2]) - sum(cards[1::2]))
Buggy code:
n = int(input())
a = input()

a = a.split()


for i in range(n):
	a[i] = int(a[i])
	
a = a.reverse()

alice = int(a[0])
bob = 0
for i in range(1, n):
	if i%2 == 0:
		alice = alice + int(a[i])
	else:
		bob = bob + int(a[i])
	
print(alice - bob)


Fixed code:
n = int(input())
a = input()

a = a.split()


for i in range(n):
	a[i] = int(a[i])

a	= sorted(a)
a.reverse()

alice = a[0]
bob = 0
for i in range(1, n):
	if i%2 == 0:
		alice = alice + a[i]
	else:
		bob = bob + a[i]
	
print(alice - bob)
Buggy code:
N = int(input())
a = list(map(int, input().split()))
a.soat(reverse=True)
A = sum([i for i in a[::2]])
B = sum([j for j in a[1::2]])
print(A - B)


Fixed code:
N = int(input())
a = sorted(list(map(int, input().split())), reverse=True)
A = sum([i for i in a[::2]])
B = sum([j for j in a[1::2]])
print(A - B)
Buggy code:
n=int(input())
x=list(map(int,input().split()))
x=x.sort()
x=x.reverse()
cnt=0
a=0
b=0
for i in x:
  if cnt%2==0:
    a+=i
    cnt+=1
  else:
    b+=i
    cnt+=1
print(a-b)

Fixed code:
n=int(input())
x=list(map(int,input().split()))
x.sort()
x=x[::-1]
cnt=0
a=0
b=0
for i in x:
  if cnt%2==0:
    a+=i
    cnt+=1
  else:
    b+=i
    cnt+=1
print(a-b)
Buggy code:
N = int(input())
list = list(map(int, input().split()))

list.sort()

for i in range(N):
    Alice = 0
    Bob = 0
    if N % 2 == 0:
        Alice += list[i]
    else:
        Bob += list[i]

print("{}".format(Alice - Bob))

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

a.sort(reverse=True)

Alice = 0
Bob = 0

for i in range(N):
    if i % 2 == 0:
        Alice += a[i]
    else:
        Bob += a[i]

print("{}".format(Alice - Bob))
Buggy code:

N = int(input())

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

A.sort()
A.reverse()

Alice = 0
Bob = 0

for i, num in enumerate(A):
    if i//2 == 0:
        Alice += num
    else:
        Bob += num
        
print(Alice - Bob)

Fixed code:

N = int(input())

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

A.sort()
A.reverse()

Alice = 0
Bob = 0

for i, num in enumerate(A):
    if i%2 == 0:
        Alice += num
    else:
        Bob += num
        
print(Alice - Bob)
Buggy code:
N = int(input())
a = list(map(int, input().split()))

a.sort()

ret = 0
for i in range(N):
    if i % 2:
        ret += a[i]
    else:
        ret -= a[i]

print(ret)

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

a.sort(reverse=True)
ret = 0
for i in range(N):
    if i % 2:
        ret -= a[i]
    else:
        ret += a[i]

print(ret)
Buggy code:
from sys import stdin

n = stdin.readline().rstrip()
A = [int(x) for x in stdin.readline().rstrip().split()]

A.sort(reverse=True)

print (A)

N=M=0

for i in range(0,len(A),2):
    N = N + A[i]

for i in range(1, len(A), 2):
    M = M + A[i]

print (N-M)







Fixed code:
from sys import stdin

n = stdin.readline().rstrip()
A = [int(x) for x in stdin.readline().rstrip().split()]

A.sort(reverse=True)

N=M=0

for i in range(0,len(A),2):
    N = N + A[i]

for i in range(1, len(A), 2):
    M = M + A[i]

print (N-M)
Buggy code:
n = int(input())
a = list(map(int, input().split()))

a = sorted(a)

ans = 0
flag = 1
for x in a:
  ans += x * flag
  flag *= -1

print(ans)

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

a = list(reversed(sorted(a)))

ans = 0
flag = 1
for x in a:
  ans += x * flag
  flag *= -1

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

A=0
B=0

for i in range(n):
 if i%2 ==1:
  A += a[i]
 else:
  B += a[i]

print(A-B)

Fixed code:
n=int(input())
a=sorted(map(int,input().split()),reverse=True)

A=0
B=0

for i in range(n):
 if i%2 ==0:
  A += a[i]
 else:
  B += a[i]

print(A-B)
Buggy code:
N=int(input())
A_list=list(map(int, input().split()))
A_list = sorted(A_list, reverse=True)
total = 0
for i in range((N+1)//2):
  total = total + A_list[i*2]
print(total)

Fixed code:
N=int(input())
A_list=list(map(int, input().split()))
A_list = sorted(A_list, reverse=True)
total = 0
for i in range((N+1)//2):
  total = total + A_list[i*2]
print(total-(sum(A_list)-total))
Buggy code:
N = int(input())
a = list(map(int, input().split()))
Alice = 0
Bob = 0
for i in range(N):
  if (i+1)%2 == 1:
    Alice += max(a)
    a.remove(max(a))
  else:
    bob += max(a)
    a.remove(ma(a))
print(Alice - Bob)

Fixed code:
N = int(input())
a = list(map(int, input().split()))
Alice = 0
Bob = 0
for i in range(N):
  if (i+1)%2 == 1:
    Alice += max(a)
    a.remove(max(a))
  else:
    Bob += max(a)
    a.remove(max(a))
print(Alice - Bob)
Buggy code:
if __name__ == '__main__':
    N = int(input())
    A = [None]*N
    A = list(map(int, input().split()))
    Alice = 0
    Bob = 0
    while(A):
        Alice += max(A)
        A.remove(max(A))
        Bob += max(A)
        A.remove(max(A))
    print(Alice - Bob)

Fixed code:
if __name__ == '__main__':
    N = int(input())
    A = [None]*N
    A = list(map(int, input().split()))
    Alice = 0
    Bob = 0
    while(A):
        Alice += max(A)
        A.remove(max(A))
        if A:
            Bob += max(A)
            A.remove(max(A))
    print(Alice - Bob)