qyliang/CodeNanoFix huggingface dataset:
Buggy code:
# https://atcoder.jp/contests/arc026/tasks/arc026_2
import math,itertools,fractions,heapq,collections,bisect,sys,queue,copy

sys.setrecursionlimit(10**7)
inf=10**20
mod=10**9+7
dd=[(-1,0),(0,1),(1,0),(0,-1)]
ddn=[(-1,0),(-1,1),(0,1),(1,1),(1,0),(1,-1),(0,-1),(-1,-1)]

def LI(): return [int(x) for x in sys.stdin.readline().split()]
def I(): return int(sys.stdin.readline())
def LS(): return sys.stdin.readline().split()
def S(): return input()

def main():
  n=I()
  ans=''

  while True:
    if abs(n)==0:
      return ans

    if n%2==0:
      ans='0'+ans
    else:
      ans='1'+ans
    n//=2
    n*=(-1)

# main()
print(main())


Fixed code:
# https://atcoder.jp/contests/arc026/tasks/arc026_2
import math,itertools,fractions,heapq,collections,bisect,sys,queue,copy

sys.setrecursionlimit(10**7)
inf=10**20
mod=10**9+7
dd=[(-1,0),(0,1),(1,0),(0,-1)]
ddn=[(-1,0),(-1,1),(0,1),(1,1),(1,0),(1,-1),(0,-1),(-1,-1)]

def LI(): return [int(x) for x in sys.stdin.readline().split()]
def I(): return int(sys.stdin.readline())
def LS(): return sys.stdin.readline().split()
def S(): return input()

def main():
  n=I()
  ans=''
  if n==0:
    return 0

  while True:
    if abs(n)==0:
      return ans

    if n%2==0:
      ans='0'+ans
    else:
      ans='1'+ans
    n//=2
    n*=(-1)

# main()
print(main())
Buggy code:
N = int(input())

ans = []
while N != 0:
    if N % 2 == 1:
        ans.append("1")
        N -= 1
    else:
        ans.append("0")
    N //= - 2

ans = "".join(ans)[::-1]
print(ans)


Fixed code:
N = int(input())
if N==0:
  print(0)
  exit()

ans = []
while N != 0:
    if N % 2 == 1:
        ans.append("1")
        N -= 1
    else:
        ans.append("0")
    N //= - 2

ans = "".join(ans)[::-1]
print(ans)
Buggy code:
# print('input >>')
N = int(input())

rest = N
i = 0
ans_l = []

while not rest == 0:
    if rest % (-2)**(i+1) == 0:
        ans_l.append('0')
    else:
        ans_l.append('1')
        rest -= (-2)**i
    i += 1

# print('----------output----------')
ans = ''.join(ans_l[::-1])

print(ans)

Fixed code:
# print('input >>')
N = int(input())

rest = N
i = 0
ans_l = []

while not rest == 0:
    if rest % (-2)**(i+1) == 0:
        ans_l.append('0')
    else:
        ans_l.append('1')
        rest -= (-2)**i
    i += 1

# print('----------output----------')
ans = ''.join(ans_l[::-1])
if N == 0:
    ans = 0

print(ans)
Buggy code:
N=int(input())
ans=[]
while N!=0:
    x=N%2
    N=(N-x)//-2
    ans.append(x)
ans.reverse()
print(*ans,sep='')

Fixed code:
N=int(input())
ans=[]
if N==0:ans.append(0)
while N!=0:
    x=N%2
    N=(N-x)//-2
    ans.append(x)
ans.reverse()
print(*ans,sep='')
Buggy code:
# -*- coding: utf-8 -*-
n = int(input())

if n == 0:
    print(0)

else:
    s = ''
    cnt = 1
    while n > 0:
        s += str(1) if n % (-2)**cnt != 0 else str(0)
        n -= (-2)**(cnt - 1) if n % (-2)**cnt != 0 else 0
        cnt += 1
    print(s[::-1])


Fixed code:
# -*- coding: utf-8 -*-
n = int(input())

if n == 0:
    print(0)

else:
    s = ''
    cnt = 1
    while n != 0:
        s += str(1) if n % (-2)**cnt != 0 else str(0)
        n -= (-2)**(cnt - 1) if n % (-2)**cnt != 0 else 0
        cnt += 1
    print(s[::-1])
Buggy code:
N = int(input())
n = 0
k = 0
even = True
if N == 0:
    print(0)
elif N > 0:
    while N > 0:
        if N & 1:
            if even:
                if n & 1 << k:
                    n = n + (5<<k)
                else:
                    n = n + (1<<k)
            else:
                if n & 1 << k:
                    n = n - (1<<k)
                else:
                    n = n + (3<<k)
        even = not even
        N = N >> 1
        k += 1
else:
    N = -N
    while N > 0:
        if N & 1 != 0:
            if even:
                if n & 1 << k:
                    n = n - (1<<k)
                else:
                    n = n + (3<<k)
            else:
                if n & 1 << k:
                    n = n + (5<<k)
                else:
                    n = n + (1<<k)
        even = not even
        N = N >> 1
        k += 1
b = bin(n)
print(b[2:])

Fixed code:
N = int(input())
n = 0
k = 0
even = True
if N > 0:
    while N > 0:
        if N & 1:
            if even:
                if n & 1 << k:
                    n = n + (5<<k)
                else:
                    n = n + (1<<k)
            else:
                if n & 1 << k:
                    n = n - (1<<k)
                else:
                    n = n + (3<<k)
        even = not even
        N = N >> 1
        k += 1
else:
    N = -N
    while N > 0:
        if N & 1 != 0:
            if even:
                if n & 1 << k:
                    n = n - (1<<k)
                else:
                    n = n + (3<<k)
            else:
                if n & 1 << k:
                    n = n + (5<<k)
                else:
                    n = n + (1<<k)
        even = not even
        N = N >> 1
        k += 1
print(bin(n)[2:])
Buggy code:
N = int(input())
ans = 0

def F(N):
  if(N == 0):
    return ''
  
  if(N % 2 == 0):
    return F(N//-2) + '0'
  else:
    return F((N-1)//-2) + '1'

print(F(N))

Fixed code:
N = int(input())
ans = 0

def F(N):
  if(N == 0):
    return ''
  
  if(N % 2 == 0):
    return F(N//-2) + '0'
  else:
    return F((N-1)//-2) + '1'

if(N == 0):
  print(0)
else:
  print(F(N))
Buggy code:
N = int(input())
S = ""
c = 1
while N != 0:
  if N%(2**c) != 0:
    N -= (-2)**(c-1)
    S = "1" + S
  else:
    S = "0" + S
  c += 1
print(S)     

Fixed code:
N = int(input())
S = ""
if N == 0:
  S = "0"
c = 1
while N != 0:
  if N%(2**c) != 0:
    N -= (-2)**(c-1)
    S = "1" + S
  else:
    S = "0" + S
  c += 1  
print(S)
Buggy code:
n = int(input())
ans=""
while n!=0:
  if n%2==0:
    ans = "0"+ans
  else
    n-=1
    ans = "1"+ans
  n//=-2  

if n==0:
  print("0")
else
  print(ans)

Fixed code:
n = int(input())
ans=""
while n!=0:
  if n%2==0:
    ans = "0"+ans
  else:
    n-=1
    ans = "1"+ans
  n//=-2  

if ans=="":
  print("0")
else:
  print(ans)
Buggy code:
n = int(input())
bin_n = bin(n)
ranges = []

def base_minus2(m, i, s):
    tmp = s
    if i == 1:
        return tmp + str(m%2)
    for j in range(i-1, -1, -1):
        if m >= ranges[j-1][0] and m <= ranges[j-1][1]:
            print(ranges[j-1], j)
            tmp += "1"
            print(tmp)
            return base_minus2(m-(-2)**j, j, tmp)
        else:
            tmp += "0"

if n == 0:
    print("0")
elif n == 1:
    print("1")
else:
    for i in range(1, 30):
        min_r = sum([(-2)**j for j in range(1, i, 2)]) + (-2)**i
        max_r = sum([(-2)**j for j in range(0, i, 2)]) + (-2)**i
        ranges.append([min_r, max_r])

    result = base_minus2(n, 30, "")
    print(result.lstrip("0"))


Fixed code:
n = int(input())
bin_n = bin(n)
ranges = []

def base_minus2(m, i, s):
    tmp = s
    if i == 1:
        return tmp + str(m%2)
    for j in range(i-1, -1, -1):

        if m >= ranges[j-1][0] and m <= ranges[j-1][1]:
            tmp += "1"
            return base_minus2(m-(-2)**j, j, tmp)
        else:
            if j == 0:
                return tmp + str(m%2)
            else:
                tmp += "0"


if n == 0:
    print("0")
elif n == 1:
    print("1")
else:
    for i in range(1, 60):
        min_r = sum([(-2)**j for j in range(1, i, 2)]) + (-2)**i
        max_r = sum([(-2)**j for j in range(0, i, 2)]) + (-2)**i
        ranges.append([min_r, max_r])

    result = base_minus2(n, 60, "")
    print(result.lstrip("0"))
Buggy code:
## ABC105C - Base -2 Number
def main():
    n = int(input())
    ans = ""
    while n != 0:
        r = n % 2
        r += 2 if r < 0 else 0
        n = (n - r) // -2
        ans += str(r)
    print(ans[::-1])


if __name__ == "__main__":
    main()

Fixed code:
## ABC105C - Base -2 Number
def main():
    n = int(input())
    ans = ""
    while n != 0:
        r = n % 2
        r += 2 if r < 0 else 0
        n = (n - r) // -2
        ans += str(r)
    print(0 if ans == "" else ans[::-1])


if __name__ == "__main__":
    main()
Buggy code:
n=int(input())
string=""

while n!=0:
    if n%2==1:
        string="1"+string
        n=n-1
    else:
        string="0"+string
    n=n/(-2)
    
print(string)

Fixed code:
n=int(input())
string=""

if n==0:
    string="0"
while n!=0:
    if n%2==1:
        string="1"+string
        n=n-1
    else:
        string="0"+string
    n=n//(-2)
    
print(string)
Buggy code:
#encoding utf-8

n = int(input())
answer = ""

def kenzan(ans):
    val = 0
    ans.reverse()
    for i in range(len(ans)):
        val += answer[i]*(-2)**i
    return int(val)

i = 1

while(n != 0):
    if n % 2 == 0:
        answer = "0" + answer
    else:
        answer = "1" + answer
        n -= 1
    n /= 2
if answer == "":
    answer = 0
print(answer)
# print(kenzan(answer))


Fixed code:
#encoding utf-8

n = int(input())
answer = ""

def kenzan(ans):
    val = 0
    ans.reverse()
    for i in range(len(ans)):
        val += answer[i]*(-2)**i
    return int(val)

i = 1

while(n != 0):
    if n % 2 == 0:
        answer = "0" + answer
    else:
        answer = "1" + answer
        n -= 1
    n /= -2
if answer == "":
    answer = 0
print(answer)
# print(kenzan(answer))
Buggy code:
#encoding utf-8

n = int(input())
m=n
answer = []

def kenzan(ans):
    val = 0
    for i in range(len(ans)):
        val += answer[i]*(-2)**i
    return int(val)

i = 1
while(n != 0):
    print(n)
    if n % (2**i) == 0:
        answer.append(0)
    else:
        answer.append(1)
        n = n-((-2)**(i-1))
    i += 1
answer.reverse()
print("".join(str(i) for i in answer))

Fixed code:
#encoding utf-8

n = int(input())
m=n
answer = []

def kenzan(ans):
    val = 0
    ans.reverse()
    for i in range(len(ans)):
        val += answer[i]*(-2)**i
    return int(val)

i = 1
while(n != 0):
    # print(n)
    if n % (2**i) == 0:
        answer.append(0)
    else:
        answer.append(1)
        n = n-((-2)**(i-1))
    i += 1
answer.reverse()
if answer == []:
    answer.append(0)
print("".join(str(i) for i in answer))
# print(kenzan(answer))
Buggy code:
from math import ceil,floor,factorial,gcd,sqrt,log2,cos,sin,tan,acos,asin,atan,degrees,radians,pi,inf,comb
from itertools import accumulate,groupby,permutations,combinations,product,combinations_with_replacement
from collections import deque,defaultdict,Counter
from bisect import bisect_left,bisect_right
from operator import itemgetter
from heapq import heapify,heappop,heappush
from queue import Queue,LifoQueue,PriorityQueue
from copy import deepcopy
from time import time
import string
import sys
sys.setrecursionlimit(10 ** 7)
def input() : return sys.stdin.readline().strip()
def INT()   : return int(input())
def MAP()   : return map(int,input().split())
def LIST()  : return list(MAP())

n = INT()
ans = deque()
i = 0
while n != 0:
    tmp = ( n % 2**(i+1) ) // 2**i
    ans.appendleft(tmp)
    n -= tmp * (-2)**i
    i += 1
print(*list(ans),sep="")

Fixed code:
from math import ceil,floor,factorial,gcd,sqrt,log2,cos,sin,tan,acos,asin,atan,degrees,radians,pi,inf,comb
from itertools import accumulate,groupby,permutations,combinations,product,combinations_with_replacement
from collections import deque,defaultdict,Counter
from bisect import bisect_left,bisect_right
from operator import itemgetter
from heapq import heapify,heappop,heappush
from queue import Queue,LifoQueue,PriorityQueue
from copy import deepcopy
from time import time
import string
import sys
sys.setrecursionlimit(10 ** 7)
def input() : return sys.stdin.readline().strip()
def INT()   : return int(input())
def MAP()   : return map(int,input().split())
def LIST()  : return list(MAP())

n = INT()

if n == 0:
    print(0)
    exit()

ans = deque()
i = 0
while n != 0:
    tmp = ( n % 2**(i+1) ) // 2**i
    ans.appendleft(tmp)
    n -= tmp * (-2)**i
    i += 1
print(*list(ans),sep="")
Buggy code:
n = int(input())

ans = ""
cnt = 0

while n != 0:
    new = n - (-2) ** cnt
    if new % (2 ** (cnt + 1)) == 0:
        ans = "1" + ans
        n = n - (-2) ** cnt
    else:
        ans = "0" + ans
    cnt += 1
    aa += 1
print(ans)


Fixed code:
n = int(input())

ans = ""
cnt = 0

while n != 0:
    new = n - (-2) ** cnt
    if new % (2 ** (cnt + 1)) == 0:
        ans = "1" + ans
        n = n - (-2) ** cnt
    else:
        ans = "0" + ans
    cnt += 1

if not ans:
    print("0")
else:
    print(ans)
Buggy code:
n = 0
l = []

if n == 0:
    l.append('0')

while n:
    if n % 2:
        l.append('1')
    else:
        l.append('0')
    n = -(n // 2)

print(''.join(reversed(l)))

Fixed code:
n = int(input())

l = []

if n == 0:
    l.append('0')

while n:
    if n % 2:
        l.append('1')
    else:
        l.append('0')
    n = -(n // 2)

print(''.join(reversed(l)))
Buggy code:
n = int(input())
base = 2
ans =""

while n != 0:
  ans = str(n%base)+ans
  n = -(n//base)
print(ans)


Fixed code:
n = int(input())
base = 2
ans =""

while n != 0:
  ans = str(n%base)+ans
  n = -(n//base)
if ans:
  print(ans)
else:
  print(0)
Buggy code:
n = int(input())

a = ""
while n != 0:
    if n % (-2) == 0:
        a += "0"
        n = n // -2
    else:
        a += "1"
        n = n // -2 + 1
b = a[::-1]
print(b)

Fixed code:
n = int(input())

a = ""

if n == 0:
    print(0)
else:
    while n != 0:
        if n % (-2) == 0:
            a += "0"
            n = n // -2
        else:
            a += "1"
            n = n // -2 + 1
    b = a[::-1]
    print(b)
Buggy code:
N = int(input())
bit = []
while N != 0:
    bit.append(str(abs(N % 2)))
    N = (N - N % 2) // (-2)
bit.reverse()
print("".join(bit))


Fixed code:
N = int(input())
if N == 0:
    print(0)
    exit()
bit = []
while N != 0:
    bit.append(str(abs(N % 2)))
    N = (N - N % 2) // (-2)
bit.reverse()
print("".join(bit))
Buggy code:
n = int(input())
x=''
while n != 0:
    x = str(n%2) + x
    n = - n//2
print(0 if x == '' else x)


Fixed code:
n = int(input())
x=''
while n != 0:
    x = str(n%2) + x
    n = - (n//2)
print(0 if x == '' else x)
Buggy code:
a=int(input())
l=[]
if a==0:
  print(a)
else:
  while a!=1:
    if a<0:
      l.append(abs(a)%2)
      if abs(a)%2==1:
        a=abs(a-1)//2
      else:
        a=abs(a)//2
    elif a>0:
      l.append(-(a%2))
      a=-(a//2)
  l.append(a)
  s=""
  for i in l:
    s+=str(i)
  print(s)
    
  
  

Fixed code:
a=int(input())
l=[]
if a==0:
  print(a)
else:
  while a!=1:
    if a<0:
      l.append(abs(a)%2)
      if abs(a)%2==1:
        a=abs(a-1)//2
      else:
        a=abs(a)//2
    elif a>0:
      l.append(a%2)
      a=-(a//2)
  l.append(a)
  s=""
  for i in range(1,1+len(l)):
    s+=str(l[-i])
  print(s)
Buggy code:
def sigma4jou(k):
    total = 0
    for i in range(k):
        total += 4 ** (i)
    return(total)

def pketa(N):
    k = 1
    while N - sigma4jou(k) > 0:
        k += 1
    return(2 * k - 1)

def mketa(N):
    k = 1
    while N + 2 * sigma4jou(k) < 0:
        k += 1
    return(2 * k)

def getResult(N):
    result = ""
    if N == 0:
        result += "0"
    elif N > 0:
        k = pketa(N)
        for i in range(k, 0, -2):
            j = int((i+1)/2)
            if abs((sigma4jou(j) - N) // (2 ** (i-1))) % 2 == 0:
                result += "1"
            else:
                result += "0"
            if i > 1:
                if abs(((sigma4jou(j) - N)) // (2 ** (i-2))) % 2 == 1:
                    result += "1"
                else:
                    result += "0"
    elif N < 0:
        k = mketa(N)
        for i in range(k, 0, -2):
            j = int(i/2)
            if abs((N + 2 * sigma4jou(j)) // (2 ** (i-1))) % 2 == 0:
                result += "1"
            else:
                result += "0"
            if i > 1:
                if abs(((N + 2 * sigma4jou(j))) // (2 ** (i-2))) % 2 == 1:
                    result += "1"
                else:
                    result += "0"
    return(result)

N = input()
print(getResult(N))

Fixed code:
def sigma4jou(k):
    total = 0
    for i in range(k):
        total += 4 ** (i)
    return(total)

def pketa(N):
    k = 1
    while N - sigma4jou(k) > 0:
        k += 1
    return(2 * k - 1)

def mketa(N):
    k = 1
    while N + 2 * sigma4jou(k) < 0:
        k += 1
    return(2 * k)

def getResult(N):
    result = ""
    if N == 0:
        result += "0"
    elif N > 0:
        k = pketa(N)
        for i in range(k, 0, -2):
            j = int((i+1)/2)
            if abs((sigma4jou(j) - N) // (2 ** (i-1))) % 2 == 0:
                result += "1"
            else:
                result += "0"
            if i > 1:
                if abs(((sigma4jou(j) - N)) // (2 ** (i-2))) % 2 == 1:
                    result += "1"
                else:
                    result += "0"
    elif N < 0:
        k = mketa(N)
        for i in range(k, 0, -2):
            j = int(i/2)
            if abs((N + 2 * sigma4jou(j)) // (2 ** (i-1))) % 2 == 0:
                result += "1"
            else:
                result += "0"
            if i > 1:
                if abs(((N + 2 * sigma4jou(j))) // (2 ** (i-2))) % 2 == 1:
                    result += "1"
                else:
                    result += "0"
    return(result)

N = int(input())
print(getResult(N))
Buggy code:
if __name__ == "__main__":
    N = int(input())
    for bit in range(0, 1 << 20):
        ans = "0" * 64
        ans = list(ans)
        res = 0

        base = 1
        idx = 0
        tmp_bit = bit
        while (tmp_bit > 0):
            if tmp_bit % 2 != 0:
                res += base
                ans[idx] = '1'
            tmp_bit = tmp_bit >> 1
            base *= 4
            idx += 2
        if N > res:
            continue
        
    
        for x in range(41, 0, -2):
            base = 2 ** x
            base *= -1
            if res + base >= N:
                res += base
                ans[x] = '1'
        if res == N:
            ans = "".join(reversed(ans))
            for i in range(len(ans)):
                if ans[i] == '1':
                    print (ans[i:])
                    break
            break
    
            


Fixed code:
if __name__ == "__main__":
    N = int(input())
    for bit in range(0, 1 << 20):
        ans = "0" * 64
        ans = list(ans)
        res = 0

        base = 1
        idx = 0
        tmp_bit = bit
        while (tmp_bit > 0):
            if tmp_bit % 2 != 0:
                res += base
                ans[idx] = '1'
            tmp_bit = tmp_bit >> 1
            base *= 4
            idx += 2
        if N > res:
            continue
        
    
        for x in range(41, 0, -2):
            base = 2 ** x
            base *= -1
            if res + base >= N:
                res += base
                ans[x] = '1'
        if res == N:
            ans = "".join(reversed(ans))
            for i in range(len(ans)):
                if ans[i] == '1':
                    print (ans[i:])
                    exit(0)
            print (0)
            exit(0)
Buggy code:
N = int(input())
if N == 0:
    print('0')
else:
    k = 0
    ans = []
    while(True):
        if N % (-2) ** k == 0:
            ans.append('0')
        else:
            ans.append('1')
            N -= (-2) ** (k - 1)
        if N == 0:
            break
        else:
            k += 1
    print(''.join(ans[::-1]))

Fixed code:
N = int(input())
if N == 0:
    print('0')
else:
    k = 1
    ans = []
    while(True):
        if N % ((-2) ** k) == 0:
            ans.append('0')
        else:
            ans.append('1')
            N -= (-2) ** (k - 1)
        if N == 0:
            break
        else:
            k += 1
    print(''.join(ans[::-1]))
Buggy code:
from functools import reduce

n = int(input())

res = []

while True:
  if n == 1:
    res.append(1)
    break
  if n%2 == 0:
    res.append(0)
    n //= -2
  else:
    res.append(1)
    n = (n-1)//(-2)


print(reduce(lambda s, x: s + str(x), reversed(res) ,""))


Fixed code:
from functools import reduce

n = int(input())

if n == 0:
  print(0)
  exit()

res = []

while True:
  if n == 0:
    break
  if n == 1:
    res.append(1)
    break
  if n%2 == 0:
    res.append(0)
    n //= -2
  else:
    res.append(1)
    n = (n-1)//(-2)


print(reduce(lambda s, x: s + str(x), reversed(res) ,""))
Buggy code:
invtwos = [1]
i = 0
while abs(invtwos[i]) <= 10**9:
    invtwos.append(invtwos[i]*(-2))
    i += 1
invtwos.append(invtwos[-1]*(-2))

n = int(input())
ans = []
i = 0
while n != 0:
    if n%abs(invtwos[i+1]) != 0:
        ans.append(1)
        n -= invtwos[i]
    else:
        ans.append(0)
    i += 1
ans.reverse()
for i in range(len(ans)):
    if i != len(ans)-1:
        print(ans[i],end="")
    else:
        print(ans[i])

Fixed code:
invtwos = [1]
i = 0
while abs(invtwos[i]) <= 10**10:
    invtwos.append(invtwos[i]*(-2))
    i += 1
invtwos.append(invtwos[-1]*(-2))

n = int(input())
ans = []
i = 0
while n != 0:
    if n%abs(invtwos[i+1]) != 0:
        ans.append(1)
        n -= invtwos[i]
    else:
        ans.append(0)
    i += 1
ans.reverse()

if len(ans) == 0:
    print("0")
else:
    for i in range(len(ans)):
        if i != len(ans)-1:
            print(ans[i],end="")
        else:
            print(ans[i])
Buggy code:
N = int(input())
base = ""
d = 0
while N != 0:
    if N%2 == 0:
        base += "0"
        N = N//2
    else:
        base += "1"
        if d%2 == 0:
            N = (N-1)//2
        else:
            N = (N+1)//2
    d += 1
print(int(base[::-1]))

Fixed code:
N = int(input())
base = ""
d = 0
if N == 0:
    print(0)
else:
    while N != 0:
        if N%2 == 0:
            base += "0"
            N = N//2
        else:
            base += "1"
            if d%2 == 0:
                N = (N-1)//2
            else:
                N = (N+1)//2
        d += 1
    print(int(base[::-1]))
Buggy code:
N=-int(input())

tmp=[]
while N!=0:
    tmp.insert(0,N%(2))
    N=-N//2
s=''.join([str(_) for _ in tmp])
print(s)


Fixed code:
N=-int(input())
if N==0:
    print(0)
else:
    tmp=[]
    while N!=0:
        tmp.insert(0,N%(2))
        N=-N//2
    s=''.join([str(_) for _ in tmp])
    print(s)
Buggy code:
N = input()
a = ""
if N ==0:
  a =0
while N !=0:
  if N%2 != 0:
    a = "1" + a
  else:
    a = "0" + a
  N = - (N//2)
print(a)

Fixed code:
N = int(input())
a = ""
if N ==0:
  a =0
while N !=0:
  if N%2 != 0:
    a = "1" + a
  else:
    a = "0" + a
  N = - (N//2)
print(a)
Buggy code:
N = int(input())
a = []
if N == 0:
    a = ["0"]
while N != 0:
    a.append(str(N % 2))
    N = -(N - N % 2) 
print("".join(list(reversed(a))))

Fixed code:
N = int(input())
a = []
if N == 0:
  a.append("0")
while N != 0:
  a.append(str(N % 2))
  N = -(N // 2)
print("".join(reversed(a)))
Buggy code:
N = int(input())
a = []
if N == 0:
    a = ["0"]
while N != 0:
    a.append(str(N % 2))
    # N = -(N - N % 2) 
print("".join(list(reversed(a))))

Fixed code:
N = int(input())
a = []
if N == 0:
  a = ["0"]
while N != 0:
  a.append(str(N % 2))
  N = -(N // 2)
  # N = -(N - N % 2) // 2
print("".join(list(reversed(a))))
Buggy code:
#coding:utf-8
n = int(input())

if n=0:
    print ('0')
    exit()

i=0
s=''
while(n!=0):
    if n%(2**(i+1))!=0:
        s+='1'
        n-=(-2)**i
    else:
        s+='0'
    i+=1
print (s[::-1])


Fixed code:
#coding:utf-8
n = int(input())

if n==0:
    print ('0')
    exit()

i=0
s=''
while(n!=0):
    if n%(2**(i+1))!=0:
        s+='1'
        n-=(-2)**i
    else:
        s+='0'
    i+=1
print (s[::-1])
Buggy code:
n=int(input())
ans=""
while n!=0:
  if (n%2)!=0:
    n-=1
    ans="1"+ans
  else:
    ans="1"+ans
  n/=-2
if ans=="":
  ans="0"
print(ans)

Fixed code:
n=int(input())
ans=""
while n!=0:
  if (n%2)!=0:
    n-=1
    ans="1"+ans
  else:
    ans="0"+ans
  n/=-2
if ans=="":
  ans="0"
print(ans)
Buggy code:
N = int(input())

ans = ""

if N == 0:
    print(0)
else:
    while True:
        if N == 0:
            break
        if N % -2 == 0:
            print(N // -2)
            print(N // 2)
            ans = ans + "0"
            N = N // -2
        else:
            ans = ans + "1"
            N = (N-1) // -2
    print(ans)

Fixed code:
N = int(input())

ans = ""

if N == 0:
    print(0)
else:
    while True:
        if N == 0:
            break
        if N % -2 == 0:
            ans = ans + "0"
            N = N // -2
        else:
            ans = ans + "1"
            N = (N-1) // -2
    print(ans[::-1])