Buggy python submission (verdict: Runtime Error):
import bisect

def number(num):
  #0bのぶんを引きます
  number_len = len(num)-2
  #numと同じ桁数で各桁が全て1である数を求めます。
  f ＝ 2**number_len - 1
  #排他的論理和をとって1を足したものを返します
  return (num^f)+1

n=int(input())
line=list(map(int,input().split))

count=0

while len(line)>0:
  #最後の数を取ってくる(最後尾なのでO(1)で済む)
  k=line.pop()
  #整数でないならその数は存在しないと同義なので処理を行わない
  if int(k) != k:
    continue
  x=number(k)
  #もしlineの最大値よりxが大きければ条件を満たすxは存在しないので処理を行わない
  if x>line[-1]:
    continue
  #その数が存在するならば、その数をlistから消去して、カウントする
  if line[bisect.bisect_left(line,x)]==x:
    #0.5を足すことでremoveの代わりとする
    line[bisect.bisect_left(line,x)] += 0.5
    count+=1

print(count)

Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)

Buggy python submission (verdict: Runtime Error):
import bisect

def number(num):
  #0bのぶんを引きます
  number_len = len(num)-2
  #numと同じ桁数で各桁が全て1である数を求めます。
  f ＝ 2**number_len - 1
  #排他的論理和をとって1を足したものを返します
  return (num^f)+1

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

count=0

while len(line)>0:
  #最後の数を取ってくる(最後尾なのでO(1)で済む)
  k=line.pop()
  #整数でないならその数は存在しないと同義なので処理を行わない
  if int(k) != k:
    continue
  x=number(k)
  #もしlineの最大値よりxが大きければ条件を満たすxは存在しないので処理を行わない
  if x>line[-1]:
    continue
  #その数が存在するならば、その数をlistから消去して、カウントする
  if line[bisect.bisect_left(line,x)]==x:
    #0.5を足すことでremoveの代わりとする
    line[bisect.bisect_left(line,x)] += 0.5
    count+=1

print(count)

Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)

Buggy python submission (verdict: Runtime Error):
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  x=reversed_num(number.pop())+1
  if len(number)==0:
    break
  y=bisect.bisect_left(number,x)
  if x>number[-1]:
    y-=1
  if number[y] ==x:
    number[y]+=0.5
    count+=1
print(count)

Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)

Buggy python submission (verdict: Time Limit Exceeded):
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  x=reversed_num(number.pop())+1
  if len(number)==0:
    break
  y=bisect.bisect_left(number,x)
  if x>number[-1]:
    y-=1
  if number[y] ==x:
    number.pop(y)
    count+=1
print(count)

Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)

Buggy python submission (verdict: Runtime Error):
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  x=reversed_num(number.pop())+1
  if number[bisect.bisect_left(number,x)] ==x:
    number.pop(bisect.bisect_left(number,x))
    count+=1
print(count)

Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)

Buggy python submission (verdict: Runtime Error):
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  x=reversed_num(number.pop())+1
  if number[bisect.bisect_left(number,x)] ==x:
    number[bisect.bisect_left(number,x)]=0
    count+=1
print(count)


Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)

Buggy python submission (verdict: Runtime Error):
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  q=number[-1]
  x=reversed_num(number[-1])+1
  number.pop()
  if x!=q:
    if x in list:
      number.remove(x)
      count+=1
print(count)


Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)

Buggy python submission (verdict: Time Limit Exceeded):
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  x=reversed_num(number[-1])+1
  number.pop()
  if x in number:
    number.remove(x)
    count+=1
print(count)


Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)

Buggy python submission (verdict: Runtime Error):
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  x=reversed_num(number[-1])+1
  if x in number:
    number.remove(x)
    count+=1
  number.pop()
print(count)


Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)

Buggy python submission (verdict: Time Limit Exceeded):
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  if reversed_num(number[-1])+1 in number and number[-1]!=reversed_num(number[-1])+1:
    number.remove(reversed_num(number[-1])+1)
    count+=1
print(count)


Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)

Buggy python submission (verdict: Time Limit Exceeded):
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  x=reversed_num(number.pop())+1
  if x in number:
    number.remove(x)
    count+=1
print(count)


Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)

Buggy python submission (verdict: Time Limit Exceeded):
def reversed_num(num):
    num_len=len(bin(num))-2
    f= 2**num_len-1
    return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
    x= reversed_num(number.pop(-1))+1
    if x in number:
        number.remove(x)
        count+=1
print(count)

Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)

Buggy python submission (verdict: Runtime Error):
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
number.reverse()
for i in number:
  if i!=reversed_num(i)+1 and reversed_num(i)+1 in number:
    number.remove(reversed_num(i)+1)
    count+=1
print(count)

Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)

Buggy python submission (verdict: Runtime Error):
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
number.reverse()
goal=[]
for i in number:
  if i != reversed_num(i)+1:
    goal.append(reversed_num(i)+1)
    number.remove(reversed_num(i)+1)
print(len(set(number)&set(goal)))


Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)

Buggy python submission (verdict: Runtime Error):
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
number.reversed()
goal=[]
for i in number:
  if i != reversed_num(i)+1:
    goal.append(reversed_num(i)+1)
    number.remove(reversed_num(i)+1)
print(len(set(number)&set(goal)))

Fixed submission:
import bisect
def reversed_num(num):
  num_len=len(bin(num))-2
  f=2**num_len-1
  return num^f
n=int(input())
number=list(map(int,input().split()))
number.sort()
count=0
while len(number)>0:
  k=number.pop()
  if len(number)==0:
    break
  if k==int(k):
    x=reversed_num(k)+1
    y=bisect.bisect_left(number,x)
    if x>number[-1]:
      y-=1
    if number[y] ==x:
      number[y]-=0.5
      count+=1
print(count)