qyliang/CodeNanoFix huggingface dataset:
Buggy code:
n=int(input())
ans=""
i=0
while n!=0 :
    if n%2==0:
        ans+="0"

    else:
        ans+="1"
        if i%2==0:
            n-=1
        else:
            n+=1
    n=n//2
    i+=1
    #print(n,ans)

print(ans[::-1])

Fixed code:
n=int(input())
ans=""
i=0
if n==0:
    print(0)
    exit()

while n!=0 :
    if n%2==0:
        ans+="0"

    else:
        ans+="1"
        if i%2==0:
            n-=1
        else:
            n+=1
    n=n//2
    i+=1
    #print(n,ans)

print(ans[::-1])
Buggy code:
from sys import stdin
n = int(stdin.readline().rstrip())
def num(n):
    if n%2 == 0:
        return num(n//(-2)) + "0"
    else:
        return num(n//(-2)) + "1"

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

print(num(n))

Fixed code:
from sys import stdin
n = int(stdin.readline().rstrip())
def num(n):
    if n == 0:
        return ""
    if n%2 == 0:
        return num(n//(-2)) + "0"
    else:
        return num((n-1)//(-2)) + "1"
if n == 0:
    print(0)
    exit()
print(num(n))
Buggy code:
n=int(input())
ans=[]
while n!=0:
    if n%-2==0:
        n=n//-2
        r=0
        ans.append('0')
    if n%-2==-1:
        n=n//-2+1
        r=1
        ans.append('1')
print(''.join(reversed(ans)))

Fixed code:
n=int(input())
ans=[]
if n==0:
    print(0)
else:
    while n!=0:
        if n%-2==0:
            n=n//-2
            r=0
            ans.append('0')
        if n%-2==-1:
            n=n//-2+1
            r=1
            ans.append('1')
    print(''.join(reversed(ans)))
Buggy code:
from math import ceil

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

ans=''

while n!=0:
    ans+=str(abs(n)%2)
    n=ceil(n/-2)
    print(n)
print(ans[::-1])

Fixed code:
from math import ceil

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

ans=''

while n!=0:
    ans+=str(abs(n)%2)
    n=ceil(n/-2)
print(ans[::-1])
Buggy code:
# base -k representation of n
def f(n, k):
    if n == 0:
        return []
    r = n % k
    return f(-(n - r) // k, k) + [r]

N = int(input())
print("".join(map(str, f(N, 2))))

Fixed code:
# base -k representation of n
def f(n, k):
    if n == 0:
        return []
    r = n % k
    return f(-(n - r) // k, k) + [r]

N = int(input())
l = f(N, 2)
if l:
    print("".join(map(str, l)))
else:
    print(0)
Buggy code:
n = int(input())

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

print(ans)

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

print(ans)
Buggy code:
number = int(input())

def to_bin(n):
    if n == 0:
        return 0
    
    digits = []
    i = 0
    base = 1
    while n != 0:
        if n % (base * 2) == 0:
            digits.append('0')
        else:
            digits.append('1')
            n -= base
        i+= 1
        base *= 2
    return digits[::-1]

ans_list = to_bin(number)

for ans in ans_list:
    print(ans, end='')


Fixed code:
number = int(input())

def to_bin(n):
    if n == 0:
        return [0]
    
    digits = []
    i = 0
    base = 1
    while n != 0:
        if n % (base * 2) == 0:
            digits.append('0')
        else:
            digits.append('1')
            n -= base
        i+= 1
        base *= -2
    return digits[::-1]

ans_list = to_bin(number)

for ans in ans_list:
    print(ans, end='')
Buggy code:
Z = int(input())
n = (-2)

ans = ""

while abs(Z) >= 1:
  r = Z % n
  if r < 0:
    r = r + 2
  Z = int((Z - r) / n)
  ans += str(r)

ans = "".join(list(reversed(ans)))

print(int(ans))

Fixed code:
Z = int(input())

if Z == 0:
  print(0)

else:
  n = (-2)

  ans = ""

  while abs(Z) >= 1:
    r = Z % n
    if r < 0:
      r = r + 2
    Z = int((Z - r) / n)
    ans += str(r)

  ans = "".join(list(reversed(ans)))


  print(int(ans))
Buggy code:
n = int(input())
def basen(n):
    a = []
    while n!= 0:
        r = n % 2
        if (r < 0):
            r += 2

        n = (n - r)//(-2)
        a.append(r)
        if(a == " "):
            a.append(0)
        reversed(a)
    return "".join(map(str,a))
print(basen(n))

Fixed code:
n = int(input())

def basen(n):
    a = []
    while n!= 0:
        r = n % 2
        if (r < 0):
            r += 2

        n = (n - r)//(-2)
        a.append(r)
    if a == []:
        a.append(0)
    a.reverse()
    return "".join(map(str,a))
print(basen(n))
Buggy code:
N = int(input())
S = ''
ans_l = []
while N != 0:
	if N % 2 == 0:
		N = N // (-2)
		S = '0' + S
	else:
		N = (N-1) // (-2)
		S = '1' + S
print(S)


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

t = 0
ans = ''
while N != 0:
    a = N%2
    if t % 2 == 0:
        ans = str(int(a)) + ans
        N -= a
        N /= 2
    else:
        ans = str(int(a)) + ans
        N += a
        N /= 2
    t +=1
    print(N)
if ans == '':
    ans = '0'
print(ans)

Fixed code:
N = int(input())

t = 0
ans = ''
while N != 0:
    a = N%2
    if t % 2 == 0:
        ans = str(int(a)) + ans
        N -= a
        N /= 2
    else:
        ans = str(int(a)) + ans
        N += a
        N /= 2
    t +=1
if ans == '':
    ans = '0'
print(ans)
Buggy code:
N = int(input())

Ans = ""
while N!=0:
    Ans = str(N%2) +Ans
    N = (N - N%2)//2
    N *= -1

print(Ans)

Fixed code:
N = int(input())

Ans = ""
while N!=0:
    Ans = str(N%2) +Ans
    N = (N - N%2)//2
    N *= -1

print(Ans if Ans!="" else 0)
Buggy code:
# -*- coding: utf-8 -*-
import sys
from collections import deque, defaultdict
from math import sqrt, factorial, gcd, ceil, atan, pi
# def input(): return sys.stdin.readline()[:-1] # warning not \n
# def input(): return sys.stdin.buffer.readline().strip() # warning bytes
# def input(): return sys.stdin.buffer.readline().decode('utf-8')
import string
# string.ascii_lowercase
from bisect import bisect_left
MOD = int(1e9)+7
INF = float('inf')


def solve():
    # n, m = [int(x) for x in input().split()]
    # n, m = [int(x) for x in input().split()]
    n = -int(input())
    ans = []
    while n != 0:
        n, m = divmod(n, -2)
        ans.append(-m)

    ans.reverse()
    print(''.join([str(x) for x in ans]))

        


t = 1
# t = int(input())
for case in range(1,t+1):
    ans = solve()


"""

"""


Fixed code:
# -*- coding: utf-8 -*-
import sys
from collections import deque, defaultdict
from math import sqrt, factorial, gcd, ceil, atan, pi
# def input(): return sys.stdin.readline()[:-1] # warning not \n
# def input(): return sys.stdin.buffer.readline().strip() # warning bytes
# def input(): return sys.stdin.buffer.readline().decode('utf-8')
import string
# string.ascii_lowercase
from bisect import bisect_left
MOD = int(1e9)+7
INF = float('inf')


def solve():
    # n, m = [int(x) for x in input().split()]
    # n, m = [int(x) for x in input().split()]
    n = -int(input())
    if n == 0:
        print(0)
        return
    ans = []
    while n != 0:
        n, m = divmod(n, -2)
        ans.append(-m)

    ans.reverse()
    print(''.join([str(x) for x in ans]))

        


t = 1
# t = int(input())
for case in range(1,t+1):
    ans = solve()


"""

"""
Buggy code:
import sys
n = int(input())
if n == 0:
  print('0')
  sys.exit()
t = []
while n != 0:
  r = n % 2
  t.append(str(r))
  n = (n - r) // -2
print(t[::-1])


Fixed code:
import sys
n = int(input())
if n == 0:
  print('0')
  sys.exit()
t = []
while n != 0:
  r = n % 2
  t.append(str(r))
  n = (n - r) // -2
print(''.join(t[::-1]))
Buggy code:
n=int(input())
k=-2
bi=''
while n!=0:
    bi+=str(n%abs(k))
    if k<0:n=-(-n//k)
    else:n=n//k
print(bi[::-1])

Fixed code:
n=int(input())
if n == 0:
    print(0)
k=-2
bi=''
while n!=0:
    bi+=str(n%abs(k))
    if k<0:n=-(-n//k)
    else:n=n//k
print(bi[::-1])
Buggy code:
a = int(input())
if a == 0:
    print("0")
else:
    digits = []*10
    base = 1
    i = 0
    while a != 0:
        if a%(base*2) == 0:
            digits.append('0')
        else:
            digits.append('1')
            a -= base
        i += 0
        base *= -2
    print(''.join(digits))


Fixed code:
a = int(input())
if a == 0:
    print("0")
else:
    digits = []*10
    base = 1
    i = 0
    while a != 0:
        if a%(base*2) == 0:
            digits.append('0')
        else:
            digits.append('1')
            a -= base
        i += 0
        base *= -2
    print(''.join(digits[::-1]))
Buggy code:
n=int(input())
x = ""
while n!=0:
    x = str(n%2) + x
    n = -(n//2)
print(x)


Fixed code:
n=int(input())
x = ""
while n!=0:
    x = str(n%2) + x
    n = -(n//2)
if x == "":
    print(0)
else:
    print(x)
Buggy code:
def main():
    n=int(input())
    ans=[]
    while n != 0:
        MOD=n%(-2)
        if MOD <0:
            MOD+=2
        ans.append(str(MOD))
        n=(n-MOD)//(-2)
    ans.reverse()
    print(''.join(ans))

if __name__=='__main__':
    main()


Fixed code:
def main():
    n=int(input())
    ans=[]
    if n==0:
        print(0)
        return
    while n != 0:
        MOD=n%(-2)
        if MOD <0:
            MOD+=2
        ans.append(str(MOD))
        n=(n-MOD)//(-2)
    ans.reverse()
    print(''.join(ans))

if __name__=='__main__':
    main()
Buggy code:
n=int(input())
x = ""
while n!=0:
    x = str(n%2) + x
    n = -(n//2)
if x = "":
    print(0)
else:
    print(x)

Fixed code:
s=int(input())
x=""
while s!=0:
    x=str(s%2)+x
    s=-(s//2)
print(0 if x=="" else x)
Buggy code:
def determine_digit(digit_num, acm, n):
    mod = 2 ** (digit_num + 1)
    if (n - acm) % mod:
        return 1
    else:
        return 0


def convert(n):
    result = ''
    acm = 0
    digit_num = 0
    # print('n:', n)
    while n != acm:
        # print(digit_num, acm, result)
        d = determine_digit(digit_num, acm, n)
        # print('d: ', d)

        # incremental procedure
        acm += d * (-2)**digit_num
        digit_num += 1
        result += str(d)

        # guard
        if digit_num > 20:
            break

    return result[::-1]


if __name__ == "__main__":
    n = int(input())

    print(convert(n))


Fixed code:
def determine_digit(digit_num, acm, n):
    mod = 2 ** (digit_num + 1)
    if (n - acm) % mod:
        return 1
    else:
        return 0


def convert(n):
    if n == 0:
        return '0'

    result = ''
    acm = 0
    digit_num = 0
    # print('n:', n)
    while n != acm:
        # print(digit_num, acm, result)
        d = determine_digit(digit_num, acm, n)
        # print('d: ', d)

        # incremental procedure
        acm += d * (-2)**digit_num
        digit_num += 1
        result += str(d)

    return result[::-1]


if __name__ == "__main__":
    n = int(input())

    print(convert(n))
Buggy code:
n = int(input())

cnt, now = 1, 0
ans = ''
for i in range(100):
    if n == now:
        break
    if (n - now) % (2**(i + 1)) != 0:
        ans = ans + '1'
        now += pow(-2, i)
    else:
        ans = ans + '0'
print(ans[::-1])


Fixed code:
n = int(input())

if n == 0:
    print(0)
else:
    cnt, now = 1, 0
    ans = ''
    for i in range(100):
        if n == now:
            break
        if (n - now) % (2**(i + 1)) != 0:
            ans = ans + '1'
            now += pow(-2, i)
        else:
            ans = ans + '0'
    print(ans[::-1])
Buggy code:
N = int(input())
ans = ""

while N != 0:
    temp = 0 if N % -2 == 0 else 1
    ans = str(temp) + ans
    N -= temp
    N //= -2
    
print(ans)

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

while N != 0:
    temp = 0 if N % -2 == 0 else 1
    ans = str(temp) + ans
    N -= temp
    N //= -2

print(ans if ans != "" else 0)
Buggy code:
n=int(input())
L=[]
while n!=0:
    if n>0 and n%2==0:
        n=-n//2
        L.append('0')
    elif n>0 and n%2==1:
        n=(-n+1)//2
        L.append('1')
    elif n<0 and -n%2==0:
        n=-n//2
        L.append('0')
    elif n<0 and -n%2==1:
        n=(-n+1)//2
        L.append('1')
print(int(''.join(L[::-1])))

Fixed code:
n=int(input())
L=[]
if n==0:
    print('0')
else:    
    while n!=0:
        if n>0 and n%2==0:
            n=-n//2
            L.append('0')
        elif n>0 and n%2==1:
            n=(-n+1)//2
            L.append('1')
        elif n<0 and -n%2==0:
            n=-n//2
            L.append('0')
        elif n<0 and -n%2==1:
            n=(-n+1)//2
            L.append('1')
    print(int(''.join(L[::-1])))
Buggy code:
n = int(input())
ps = [0] * (1 << 16)
for i in range(1 << 16):
    temp = 0
    for j in range(16):
        if (i >> j) & 1:
                temp += (-2) ** (2 *j)
    ps[i] = temp

"""
for index, value in enumerate(ps):
    print(bin(index)[2:].zfill(16), value)
"""

pattern1 = None
pattern2 = None

for i in range(1 << 16):
    temp2 = 0
    for j in range(16):
        if (i >> j) & 1:
                temp2 += (-2) ** (2 *j + 1)
    n2 = n - temp2
    pattern1 = bisect.bisect_left(ps, n2)
    if pattern1 != (1 << 16) and ps[pattern1] == n2:
        pattern2 = bin(i)[2:].zfill(16)
        pattern1 = bin(pattern1)[2:].zfill(16)
        break

ans = ""
for i in range(16):
    ans += pattern2[i]
    ans += pattern1[i]
    
true_ans = ""
flag = False
for i in range(len(ans)):
    if ans[i]=="1":
        true_ans += "1"
        flag = True
    elif flag:
        true_ans += "0"

if true_ans == "":
    true_ans = "0"
        
print(true_ans)

Fixed code:
import bisect
n = int(input())
ps = [0] * (1 << 16)
for i in range(1 << 16):
    temp = 0
    for j in range(16):
        if (i >> j) & 1:
                temp += (-2) ** (2 *j)
    ps[i] = temp

pattern1 = None
pattern2 = None

for i in range(1 << 16):
    temp2 = 0
    for j in range(16):
        if (i >> j) & 1:
                temp2 += (-2) ** (2 *j + 1)
    n2 = n - temp2
    pattern1 = bisect.bisect_left(ps, n2)
    if pattern1 != (1 << 16) and ps[pattern1] == n2:
        pattern2 = bin(i)[2:].zfill(16)
        pattern1 = bin(pattern1)[2:].zfill(16)
        break

ans = ""
for i in range(16):
    ans += pattern2[i]
    ans += pattern1[i]
    
true_ans = ""
flag = False
for i in range(len(ans)):
    if ans[i]=="1":
        true_ans += "1"
        flag = True
    elif flag:
        true_ans += "0"

if true_ans == "":
    true_ans = "0"
        
print(true_ans)
Buggy code:
N = int(input())
def solve(N):
    ans = ''
    while N != 0:
        ans += str(N & 1)
        N >>= 1
        N *= -1
    return ans[::-1]
print(solve(N))

Fixed code:
N = int(input())
def solve(N):
    if N == 0:
        return '0'
    ans = ''
    while N != 0:
        ans += str(N & 1)
        N >>= 1
        N *= -1
    return ans[::-1]
print(solve(N))
Buggy code:
import sys
def input(): return sys.stdin.readline().rstrip()

def main():
    N = int(input())

    ans = []
    while N != 0:
        r = N % 2
        if r < 0:
            r += 2
        ans.append(r)
        N -= r
        N //= -2
    print("".join(map(str, ans)))

if __name__ == '__main__':
    main()


Fixed code:
import sys
def input(): return sys.stdin.readline().rstrip()

def main():
    N = int(input())

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

    ans = []
    while N != 0:
        r = N % 2
        if r < 0:
            r += 2
        ans.append(r)
        N -= r
        N //= -2
    print("".join(map(str, ans[::-1])))

if __name__ == '__main__':
    main()
Buggy code:
import sys
input = sys.stdin.readline
N = int(input())
i = 0
ans = []
while N != 0:
    i += 1
    if N % 2 == 0:
        N //= 2
        ans.append("0")
    else:
        if i % 2 == 1:
            N -= 1
            N //= 2
            ans.append("1")
        else:
            N += 1
            N //= 2
            ans.append("1")
print("".join(ans[::-1]))





Fixed code:
import sys
input = sys.stdin.readline
N = int(input())
i = 0
ans = []
if N == 0:
    print(0)
    sys.exit()
while N != 0:
    i += 1
    if N % 2 == 0:
        N //= 2
        ans.append("0")
    else:
        if i % 2 == 1:
            N -= 1
            N //= 2
            ans.append("1")
        else:
            N += 1
            N //= 2
            ans.append("1")
print("".join(ans[::-1]))
Buggy code:
N=int(input())
P=N
Q=0
R=0
L=''
while abs(P)>1:
    if P%2==0:
        Q=P/(-2)
        L+='0'
    else:
        Q=(P-1)/(-2)
        L+='1'
    P=Q
if P==1:
    L+='1'
else:
    L+='11'
ans=L[::-1]
print(ans)

Fixed code:
N=int(input())
P=N
Q=0
R=0
L=''
if N==0:
    ans=0
else:
    while abs(P)>1:
        if P%2==0:
            Q=P/(-2)
            L+='0'
        else:
            Q=(P-1)/(-2)
            L+='1'
        P=Q
    if P==1:
        L+='1'
    else:
        L+='11'
    ans=L[::-1]
print(ans)
Buggy code:
n = int(input())

s = ""

while n != 0:
	s = str(n%2) + s
	s = -(s//2)

print(s if s != "" else 0)

Fixed code:
n = int(input())

s = ""

while n != 0:
	s = str(n%2) + s
	n = -(n//2)

print(s if s != "" else 0)
Buggy code:
n = int(input())
if n > 0:key = 1
if n < 0:key = 0
lis = []
while abs(n) >= 1:
  if n % 2 == 1:
    n -= 1
    lis.insert(0,"1")
  else:
    lis.insert(0,"0")
  n = n // (-2)

print("".join(lis))
  

Fixed code:
n = int(input())
if n > 0:key = 1
if n < 0:key = 0
lis = []
if n == 0:
  lis.append("0")
while abs(n) >= 1:
  if n % 2 == 1:
    n -= 1
    lis.insert(0,"1")
  else:
    lis.insert(0,"0")
  n = n // (-2)
print("".join(lis))
Buggy code:
n = int(input())
ans=[]
while not(n==0):
    amari=-(n%(-2))
    shou=(n-amari)//(-2)
    n=shou
    ans.append(str(amari))
ans=[ans[-i-1] for i in range(len(ans))]
print(''.join(ans))

Fixed code:
n = int(input())
ans=[]
if n==0:
    print(0)
    exit()
while not(n==0):
    amari=-(n%(-2))
    shou=(n-amari)//(-2)
    n=shou
    ans.append(str(amari))
ans=[ans[-i-1] for i in range(len(ans))]
print(''.join(ans))
Buggy code:
n = int(input())
s = ""
while(n != 0):
    if n % -2 == 0:
        s  = "0" + s
    else:
        s  = "1" + s
        n = n - 1
    n //= -2
print(s)

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

def solve(N):
    result = ""
    n = N
    i = 0
    while n:
        k = (-2)**i
        if n & (1 << i):
            n -= k
            result = "1" + result
        else:
            result = "0" + result
        i += 1
    return result

print(solve(N))


Fixed code:
N = int(input())

def solve(N):
    if N == 0:
        return "0"
    result = ""
    n = N
    i = 0
    while n:
        k = (-2)**i
        if n & (1 << i):
            n -= k
            result = "1" + result
        else:
            result = "0" + result
        i += 1
    return result

print(solve(N))
Buggy code:
N = int(input())
S = list()
if N==0:
  print(0)
  exit()
elif N>0:
  while N>0:
    S.append(N%2)
    N//=2
  S.append(0)
  for i in range(len(S)-1):
    if i%2==1 and S[i]==1:
      S[i+1] += 1
    if S[i]==2:
      S[i]=0
      S[i+1]+=1
else:
  N *= -1
  while N>0:
    S.append(N%2)
    N//=2
  S.append(0)
  for i in range(len(S)-1):
    if i%2==0 and S[i]==1:
      S[i+1] += 1
    if S[i]==2:
      S[i]=0
      S[i+1]+=1
  
S.reverse()
if S[0]==0:
  S = S[1:]
ans = ""
for s in S:
  ans += str(s)
print(ans)

Fixed code:
N = int(input())
S = list()
if N==0:
  print(0)
  exit()
elif N>0:
  while N>0:
    S.append(N%2)
    N//=2
  S.append(0)
  S.append(0)
  for i in range(len(S)-1):
    if i%2==1 and S[i]==1:
      S[i+1] += 1
    if S[i]==2:
      S[i]=0
      S[i+1]+=1
else:
  N *= -1
  while N>0:
    S.append(N%2)
    N//=2
  S.append(0)
  S.append(0)
  for i in range(len(S)-1):
    if i%2==0 and S[i]==1:
      S[i+1] += 1
    if S[i]==2:
      S[i]=0
      S[i+1]+=1
  
S.reverse()
while S[0]==0:
  S = S[1:]
ans = ""
for s in S:
  ans += str(s)
print(ans)
Buggy code:
N = int(input())

ans = ''

while N != 0 and N != 1:
    if N > 0:
        if N%2:
            ans += '1'
            N = -(N//2)
        else:
            ans += '0'
            N = -N//2
    else:
        if -N%2:
            ans += '1'
            N = -(N-1)//2
        else:
            ans += '0'
            N = N//(-2)
if N:
    ans += '1'
print(ans[::-1])



Fixed code:
N = int(input())

ans = ''
if N == 0:
    print(0)
    exit()

while N != 0 and N != 1:
    if N > 0:
        if N%2:
            ans += '1'
            N = -(N//2)
        else:
            ans += '0'
            N = -N//2
    else:
        if -N%2:
            ans += '1'
            N = -(N-1)//2
        else:
            ans += '0'
            N = N//(-2)
if N:
    ans += '1'
print(ans[::-1])
Buggy code:
N=int(input())
S = ""
while N != 0:
  if N%2==0:
    S = "0" + S
  else:
    S = "1" + S
    N -= 1
  N /= -2
print(S)


Fixed code:
N=int(input())
S = ""
while N != 0:
  if N%2==0:
    S = "0" + S
  else:
    S = "1" + S
    N -= 1
  N /= -2
if S == "": S = "0"
print(S)
Buggy code:
def F(N):
    if N == 0:
        return ''
    if N % 2 == 0:
        return F(N//-2) + '0'
    return F((N-1)//-2) + '1'

N = int(input())
print(F(N))
        

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

N = int(input())
answer = F(N)
if N == 0:
    answer = 0
print(answer)
Buggy code:
a=int(input())
b=''
while a:
  s=str(a&1)+s
  n=-(n//2)
print(b if b else 0)

Fixed code:
a=int(input())
b=''
while a:
 b=str(a&1)+b
 a=-(a//2)
print(b if b else 0)
Buggy code:
a=int(input())
b=[]
if(a==0)print(0)
while a:
	b.append(a&1)
	a=int((a-(a&1))/(-2))
print(''.join(map(str,b)))

Fixed code:
a=int(input())
b=[]
if a==0:
	print(0)
while a:
	b.append(a&1)
	a-=a&1
	a=int(a/-2)

print(''.join(map(str,b[::-1])))
Buggy code:
a = int(input(""))
list = []
while(a):
    if(a%(-2)==0):
        list.append(0)
        a//=-2
    elif(a%(-2)==-1):
        list.append(1)
        a -= 1
        a//=-2

list.reverse()
for i in list:print(i,end='')
print()

Fixed code:
a = int(input(""))
list = []
if(a == 0):
    list.append(0)
while(a):
    if(a%(-2)==0):
        list.append(0)
        a//=-2
    elif(a%(-2)==-1):
        list.append(1)
        a -= 1
        a//=-2

list.reverse()
for i in list:print(i,end='')
print()
Buggy code:
import math

n=int(input())
s=""

i=0
while n!=0:
    #print(s)
    if abs(n)%2==0:
        s="0"+s
        n=n//2
    else:
        if i%2==0:
            n=(n-1)//2
        else:
            n=(n+1)//2
        s="1"+s
    i+=1
print(s)


Fixed code:
import math

n=int(input())
s=""

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

ans.reverse()
ans=''.join(map(str,ans))
print(ans)

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

ans.reverse()
ans=''.join(map(str,ans))
print(ans)
Buggy code:
n = int(input())
ans = ''
i = 0
while not n == 0:
    i += 1
    if n % 2 == 0:
        ans = '0' + ans
    else:
        ans = '1' + ans
        n += (-1) ** i
    n //= 2
print(ans)

Fixed code:
n = int(input())
ans = ''
i = 0
while not n == 0:
    i += 1
    if n % 2 == 0:
        ans = '0' + ans
    else:
        ans = '1' + ans
        n += (-1) ** i
    n //= 2
if i == 0:
    ans += '0'
print(ans)
Buggy code:
N=int(input())
S = ""
while N != 0:
    if N %2 != 0:
        S = "1" + S
        N -= 1
    else:
        S = "0" + S
    N /= -2
print(S)

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

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