qyliang/CodeNanoFix huggingface dataset:
Buggy code:
n = int(input())

ans = 0
for i in range(1, n+1):
  x = len(i)
  if x%2 == 1:
    ans += 1
    
print(ans)

Fixed code:
n = int(input())
 
ans = 0
for i in range(1, n+1):
  x = len(str(i))
  if x%2 == 1:
    ans += 1
    
print(ans)
Buggy code:
def main(n):
    count = 0

    for i in range(n + 1):
        if len(str(i)) % 2 == 1:
            count += 1

    print(count)


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

    main(n)


Fixed code:
def main(n):
    count = 0

    for i in range(1, n + 1):
        if len(str(i)) % 2 == 1:
            count += 1

    print(count)


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

    main(n)
Buggy code:
x = input()
m = len(x)
x = int(x)

p = m//2
q = m%2

if q==1:
  if p==0:
    print(x)
    exit()
  else:
    a = 90
    while(p>0):
      x -= a
      a *= 100
    print(x)
    exit()
else:
  if p==0:
    print(0)
    exit()
  else:
    x = 0
    a = 9
    while(p>1):
      x += a
      a *= 100
    print(x)
    exit()  
    

Fixed code:
x = input()
m = len(x)
x = int(x)

p = m//2
q = m%2

if q==1:
  if p==0:
    print(x)
    exit()
  else:
    a = 90
    while(p>0):
      x -= a
      a *= 100
      p -= 1
    print(x)
    exit()
else:
  if p==0:
    print(0)
    exit()
  else:
    x = 0
    a = 9
    while(p>0):
      x += a
      a *= 100
      p -= 1
    print(x)
    exit()
Buggy code:
n=int(input())
cnt =0
for i in range(1,1+n):
  if len(str(n)) % 2 == 1:
    cnt += 1
print(cnt)
      


Fixed code:
n = int(input())
c = 0

for i in range(1,n+1):
  i = str(i)
  if len(i) % 2 == 1:
    c += 1
  
print(c)
Buggy code:
N = int(input())
ans = 0
for i in range(1,N+1):
    if len(str(N))%2==1:
        ans += 1

print(ans)

Fixed code:
N = int(input())

ans = 0
for i in range(1, N + 1):
    if len(str(i)) % 2 == 1:
        ans += 1
print(ans)
Buggy code:
N = input()
nlen = len(N)
cnt = 0
for i in range(1, nlen):
  if i % 2:
    cnt += (10 ** i) - (10 ** (i - 1))
print(cnt)
N = int(N)
if nlen % 2:
  cnt += N - 10 ** (nlen - 1) + 1
print(cnt)

Fixed code:
N = input()
nlen = len(N)
cnt = 0
for i in range(1, nlen):
  if i % 2:
    cnt += (10 ** i) - (10 ** (i - 1))
N = int(N)
if nlen % 2:
  cnt += N - 10 ** (nlen - 1) + 1
print(cnt)
Buggy code:
n=int(input())
m=str(n)
minus1=10**(len(m)-2)*9
minus=minus1
if len(m)==1:
    print(n)
if len(m)%2==0:
    for i in range(len(m)//2):
        minus1+=minus//(100**(len(m)//2-i))
        print(minus1)
else:
    for i in range(len(m)//2):
        minus1+=minus//(100**(len(m)//2-i)
        print(minus1//10+n-10**(len(m)-1))

Fixed code:
n=int(input())
m=str(n)
minus1=10**(len(m)-2)*9
minus=minus1
if len(m)==1:
    print(n)
elif len(m)%2==0:
    for i in range(len(m)//2):
        minus1+=minus//(100**(len(m)//2-i))
    print(minus1)
else:
    for i in range(len(m)//2):
        minus1+=minus//(100**(len(m)//2-i))
    print(minus1//10+n-10**(len(m)-1)+1)
Buggy code:
import io
import sys

MOD = 10 ** 9 + 7


def IN_S():
  return input()


def IN_I():
  return int(input())


def IN_L_I():
  return list(map(int, input().split()))


def IN_L_S():
  return list(map(str, input().split()))


def STR_SPLIT(s, n):
  for l in range(0, len(s), n):
    yield s[0 + l:n + l]


def T_IN():
  global test_str
  sys.stdin = io.StringIO(test_str[1:-1])


test_str = '''
136
'''


def MAIN():
  T_IN()
  A()


def A():
  n = IN_I()

  t = 0
  if n > 9:
    t += 9

  if n > 999:
    t += 900

  if n > 99999:
    t += 90000

  if n <= 9:
    t += n
  elif 99 < n <= 999:
    t += n - 99
  elif 9999 < n <= 99999:
    t += n - 9999

  print(t)
  return None


def B():
  return None


def C():
  return None


MAIN()


Fixed code:
import io
import sys

MOD = 10 ** 9 + 7


def IN_S():
  return input()


def IN_I():
  return int(input())


def IN_L_I():
  return list(map(int, input().split()))


def IN_L_S():
  return list(map(str, input().split()))


def STR_SPLIT(s, n):
  for l in range(0, len(s), n):
    yield s[0 + l:n + l]


def T_IN():
  global test_str
  sys.stdin = io.StringIO(test_str[1:-1])


test_str = '''
136
'''


def MAIN():
  # T_IN()
  A()


def A():
  n = IN_I()

  t = 0
  if n > 9:
    t += 9

  if n > 999:
    t += 900

  if n > 99999:
    t += 90000

  if n <= 9:
    t += n
  elif 99 < n <= 999:
    t += n - 99
  elif 9999 < n <= 99999:
    t += n - 9999

  print(t)
  return None


def B():
  return None


def C():
  return None


MAIN()
Buggy code:
n = int(input())
sm = 0
for i in range(n):
    if len(str(i)) % 2 == 1:
        sm += 1
        
print(sm)

Fixed code:
n = input()
count=0
for i in range(int(n)):
    if len(str(i+1))%2==1:
        count+=1
print(count)
Buggy code:
a = int(input())
for i in range(1, a + 1):
  if len(str(i)) % 2 ==1: ans+=1   
print(ans)


Fixed code:
a = int(input())
ans = 0
for i in range(1, a + 1):
  if len(str(i)) % 2 ==1: ans+=1   
print(ans)
Buggy code:
N = input().split()
ans = 0
N = int(N)
for i in range(1,N+1):
  if len(str(i)) % 2 ==1:
    ans += 1

print(ans)

Fixed code:
N = int(input())

ans = 0
for i in range(1,N+1):
    if len(str(i))%2 == 1:
        ans += 1

print(ans)
Buggy code:
m = input()

if n < 10:
    print(n)
elif 10 <= n < 100:
    print(9)
elif 100 <= n <1000:
    print(n-90)
elif 1000 <= n < 10000:
    print(909)
elif 10000 <= n < 100000:
    print(n-9090)
elif 100000<= n < 1000000:
    print(90909)



Fixed code:
n =int(input())

if n < 10:
    print(n)
elif 10 <= n < 100:
    print(9)
elif 100 <= n <1000:
    print(n-90)
elif 1000 <= n < 10000:
    print(909)
elif 10000 <= n < 100000:
    print(n-9090)
elif 100000 <= n < 1000000:
    print(90909)
Buggy code:
n = int(input())

if n < 10:
    print(n)
elif n < 100:
    print("9")
elif n < 1000:
    print(n-90)
elif n < 10000:
    print("909")
elif n < 100000
    print(n-9090)
else:
    print("90909")

Fixed code:
n = int(input())

if n < 10:
    print(n)
elif n < 100:
    print("9")
elif n < 1000:
    print(n-90)
elif n < 10000:
    print("909")
elif n < 100000:
    print(n-9090)
else:
    print("90909")
Buggy code:
n=input()
l=len(n)
c=0
if l%2==0:
  for i in range(1,l,2):
    c+=9**i
  print(c)
else:
  m=int(n)
  d=m-(10**(l-1))+1
  c+=d
  for i in range(1,l-1,2):
    c+=9**i
  print(c)

Fixed code:
n=input()
l=len(n)
c=0
if l%2==0:
  for i in range(1,l,2):
    c+=9*(10**(i-1))
  print(c)
else:
  m=int(n)
  d=m-(10**(l-1))+1
  c+=d
  for i in range(1,l-1,2):
    c+=9*(10**(i-1))
  print(c)
Buggy code:
N = int(input())

res=0
for i in range(1, N+1):
    if(len(str(i))//2==1):
        res+=1

print(res)

Fixed code:
N = int(input())

res=0
for i in range(1, N+1):
    if(len(str(i)) % 2==1):
        res+=1

print(res)
Buggy code:
N = int(input())

ans = 0

for i in range(N):
    if ( 1 <= i and i < 10) or (100 <= i and i < 1000) or (10000 <= i and i < 100000):
        ans = ans + 1


print(ans)


Fixed code:
N = int(input())

ans = 0

for i in range(N+1):
    if ( 1 <= i and i < 10) or (100 <= i and i < 1000) or (10000 <= i and i < 100000):
        ans = ans + 1

print(ans)
Buggy code:
N = int(input())
a = 0
if N < 10:
    a = N
elif 10 < N <100:
    a = 9
elif 100 <= N < 1000:
    a = N - 90
elif 1000 <= N < 10000:
    a = 909
elif 10000 <= N < 100000:
    a = N - 9090
else:
    a = 90910

print(a)

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

if N < 10:
    a = N
elif 10 <= N <100:
    a = 9
elif 100 <= N < 1000:
    a = N - 90
elif 1000 <= N < 10000:
    a = 909
elif 10000 <= N < 100000:
    a = N - 9090
else :
    a = 90909

print(a)
Buggy code:
n = int(input())
s = str(n)
ans = 0
print(len(s))
for i in range(len(s)):
    if (i + 1) % 2 != 0:
        if len(s) == i + 1:
            ans += n - (10 ** i - 1)
        else:
            ans += 10 ** (i + 1) - 1 - (10 ** i - 1)
        print(ans)
print(ans)

Fixed code:
n = int(input())
s = str(n)
ans = 0
for i in range(len(s)):
    if (i + 1) % 2 != 0:
        if len(s) == i + 1:
            ans += n - (10 ** i - 1)
        else:
            ans += 10 ** (i + 1) - 1 - (10 ** i - 1)
print(ans)
Buggy code:
N = int(input())
count = 0

for i in range(1, N+1):
  if len(str(N)) % 2 == 1:
    count += 1
    
print(count)

Fixed code:
N = int(input())

count = 0
for i in range(1, N + 1):
    disits = list(str(i))
    if len(disits) % 2 == 1:
        count += 1

print(count)
Buggy code:
N = int(input())
counter =0

for i in range(N):
    if(len(str(i)) % 2 == 1):
        counter += 1
    else:
        pass

print(counter-1)


Fixed code:


N = int(input())
counter =0

for i in range(N+1):
    if(len(str(i)) % 2 == 1):
        counter += 1
    else:
        pass

print(counter-1)
Buggy code:
n = int(input())
ans = 0
for i in range(1, n + 1):
  cnt = 0
  while n > 0:
    n //= 10
    cnt += 1
  if cnt % 2 != 0:
    ans += 1
print(ans)


Fixed code:
n = int(input())
ans = 0
for i in range(1, n + 1):
  cnt = 0
  while i > 0:
    i //= 10
    cnt += 1
  if cnt % 2 != 0:
    ans += 1
print(ans)
Buggy code:
N = int(input())

ans = 0
i = 0

while N >= 10**(i+1):
    if i%2 == 1:
        ans += 10**(i+1)- 10**i
    i += 1

if i%2 == 0:
    ans += N - 10**i + 1
print(ans)

Fixed code:
N = int(input())

ans = 0
i = 0

while N >= 10**(i+1):
    if i%2 == 0:
        ans += 10**(i+1)- 10**i
    i += 1

if i%2 == 0:
    ans += N - 10**i + 1
print(ans)
Buggy code:
Nstr = input()
N = int(Nstr)

l = len(Nstr)

_sum = 0

# if odd
if l % 2 == 1:
    _sum += (N - (10**(l-1)-1))
else:
    pass

print(N-(10**(l-1)-1), _sum, N)
for keta in range(1,l,2):
    if keta % 2 == 0:
        continue
    _sum += (10**(keta) -1) - (10**(keta-1) -1)

print(_sum)


Fixed code:
Nstr = input()
N = int(Nstr)

l = len(Nstr)

_sum = 0

# if odd
if l % 2 == 1:
    _sum += (N - (10**(l-1)-1))
else:
    pass

for keta in range(1,l,2):
    if keta % 2 == 0:
        continue
    _sum += (10**(keta) -1) - (10**(keta-1) -1)

print(_sum)
Buggy code:
a = input()
if len(a)==5:
    b = int(a)
    c = b - 9999 + 9 + 900
elif len(a)==4:
    b = int(a)
    c = 9 + 900
elif len(a)==3:
    b = int(a)
    c = b - 99 + 9
elif len(a)==2:
    b = int(a)
    c = 9
elif len(a)==1:
    b = int(a)
    c = b
print(c)

Fixed code:
a = input()
if len(a)==5:
    b = int(a)
    c = b - 9999 + 9 + 900
elif len(a)==4:
    b = int(a)
    c = 9 + 900
elif len(a)==3:
    b = int(a)
    c = b - 99 + 9
elif len(a)==2:
    b = int(a)
    c = 9
elif len(a)==1:
    b = int(a)
    c = b
elif len(a)==6:
    c = 90000 + 900 +9
print(c)
Buggy code:
N = int(input())

# 1 <= N <= 10**5 = 100,000

if N <= 9:
  print(N)
elif N <= 999:
  ans = 9 + (N - 99)
  print(ans)
elif N <= 99999:
  ans = 9 + 900 + (N - 9999)
  print(ans)
else:
  print(90909

Fixed code:
N = int(input())

# 1 <= N <= 10**5 = 100,000

if N <= 99:
  print(min(N, 9))
elif N <= 9999:
  ans = 9 + (min(N, 999) - 99)
  print(ans)
else:
  ans = 9 + 900 + (min(N, 99999) - 9999)
  print(ans)
Buggy code:
n = int(input())
count = 0
for i in range(1, n):
    if len(str(i)) % 2 == 1:
        count += 1
    
print(count)

Fixed code:
n = int(input())
ans = 0
for i in range(1, n+1):
  if len(str(i))%2 == 1:
    ans += 1
print(ans)
Buggy code:
print(len([i for i in range(i,int(input())+1) if len(str(i))%2]))

Fixed code:
print(len([i for i in range(1,int(input())+1) if len(str(i))%2]))
Buggy code:
a=int(input())
b=0
for i in range(a):
  if len(str(a))%2!=0:
    b+=1
  
print(b)

Fixed code:
a=int(input())
b=0
for i in range(a):
  if len(str(a))%2!=0:
    b+=1
  a-=1
print(b)
Buggy code:
n = int(input())
ans = 0
for i in range(1,n+1):
  if len(i)%2==1:
    ans += 1
print(ans)

Fixed code:
n = int(input())
ans = 0
for i in range(1,n+1):
  if len(str(i))%2==1:
    ans += 1
print(ans)
Buggy code:
# -*- coding:utf-8 -*-

N = int(input())

odd = 0

for x in range(1, N):
    num = len(str(x))
    if num % 2 == 1:
        odd += 1

print(odd)


Fixed code:
# -*- coding:utf-8 -*-

N = int(input())

odd = 0

for x in range(1, N + 1):
    num = len(str(x))
    if num % 2 == 1:
        odd += 1

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

cnt = 0
for i in range(1,n+1):
    if len(str(i)) % 2 == 1:
        cnt += 1

print(cnt

Fixed code:
n=int(input())
an=0

for i in range(1,n+1):
    if len(str(i))%2==1:
        an+=1

print(an)
Buggy code:
N = int(input())
if N < 10 :
	print(N)
elif N < 100 :
	print(9)
elif N < 1000 :
	print(9 + (N - 100 + 1))
elif N < 10000 :
	print(9 + 900)
elif N < 100000 :
	print(9 + 900 + (N - 1000 + 1))
else :
	print(9 + 900 + 9000)


Fixed code:
N = int(input())
if N < 10 :
	print(N)
elif N < 100 :
	print(9)
elif N < 1000 :
	print(9 + (N - 100 + 1))
elif N < 10000 :
	print(9 + 900)
elif N < 100000 :
	print(9 + 900 + (N - 10000 + 1))
else :
	print(9 + 900 + 90000)
Buggy code:
s = input()
l = len(s)
n = int(s)
ans = 0
for i in range(1,l+1):
  if i == l and i % 2 == 1:
    ans += n - (10**(i-1)) + 1
  elif i % 2 == 1:
    ans += (10**i) - 1
print(ans)

Fixed code:
s = input()
l = len(s)
n = int(s)
ans = 0
for i in range(1,l+1):
  if i == l and i % 2 == 1:
    ans += n - (10**(i-1)) + 1
  elif i % 2 == 1:
    ans += ((10**i) - 1) - (10**(i-1)) + 1
print(ans)
Buggy code:
N = int(input())
ans = 0
for i in range(1, N):
    if len(str(i)) % 2 == 1:
        ans += 1
print(ans)

Fixed code:
n = int(input())

ans = 0
for i in range(1, n+1):
    if len(str(i))%2 == 1:
        ans += 1
print(ans)
Buggy code:
N = int(input())
cnt = 0
for i in range(1, N):
    if len(str(i)) % 2 == 1:
        cnt += 1

print(cnt)

Fixed code:
N = int(input())
cnt = 0
for i in range(1, N+1):
    if len(str(i)) % 2 == 1:
        cnt += 1

print(cnt)
Buggy code:
n = input()
if len(n) == 6: print(90909)
if len(n) == 5: print(909 + int(n) - 9999)
if len(n) == 4: print(909)
if len(n) == 3: print(9 + int(n) - 99)
if len(n) == 2: print(9)
else: print(int(n))

Fixed code:
n = input()
if len(n) == 6: print("90909")
elif len(n) == 5: print(909 + int(n) - 9999)
elif len(n) == 4: print("909")
elif len(n) == 3: print(9 + int(n) - 99)
elif len(n) == 2: print("9")
else: print(int(n))
Buggy code:
n = int(input())
for i in range(1, n + 1):
  if len(str(i)) % 2 = 0:
    ans += 1
print(ans)

Fixed code:
n = int(input())

ans = 0
for i in range(1, n+1):
    s = str(i)
    if len(s) % 2 == 1:
        ans += 1

print(ans)
Buggy code:
N = int(input())
cnt = 0
for i in range(N):
  if len(i)%2 == 1:
    cnt += 0
print(cnt)

Fixed code:
N = int(input())
cnt = 0
for i in range(1,N+1):
  if len(str(i))%2 == 1:
    cnt += 1
print(cnt)
Buggy code:
N = input()
digit = len(N)
num = int(N)

ans = 0
for i in range(1, digit, 2):
        ans += 9 ** i

if digit % 2 == 1:
    ans += num - 10 ** (digit - 1) +1

print(ans)

Fixed code:
N = input()
digit = len(N)
num = int(N)

ans = 0
for i in range(1, digit, 2):
        ans += 9 * (10**(i-1))

if digit % 2 == 1:
    ans += num - 10 ** (digit - 1) +1

print(ans)
Buggy code:
n=int(input())
ans=0
for i in range(1,n+1):
  if len(i)%2==1:
    ans+=1
print(ans)

Fixed code:
n = int(input())

ans = 0
for i in range(1, n+1):
    if len(str(i))%2 == 1:
        ans += 1
print(ans)
Buggy code:
n = int(input())

length = len(str(n))

if length == 1 or length == 2:
    res = n
elif length == 3:
    res = 9 + n - 99
elif length == 4:
    res = 909

elif length == 5:
    res = 9 + 900 + n - 9999
else:
    res = 90909

print(res)


Fixed code:
n = int(input())

length = len(str(n))

if length == 1:
    res = n
elif length == 2:
    res = 9
elif length == 3:
    res = 9 + n - 99
elif length == 4:
    res = 909

elif length == 5:
    res = 9 + 900 + n - 9999
else:
    res = 90909

print(res)
Buggy code:
n = input()
answer = 0
for i in range(1, n+1):
  if len(str(i)) % 2 != 0:
	answer += 1
    
print(answer)

Fixed code:
n = int(input())
answer = 0
for i in range(1, n + 1):
  if len(str(i)) % 2 == 1:
    answer += 1
print(answer)
Buggy code:
if len(str(n)) == 6:
    print(90909)
elif len(str(n)) == 4:
    print(909)
elif len(str(n)) == 2:
    print(9)
elif len(str(n)) == 1:
    print(n)
elif len(str(n)) == 3:
    print(9 + (n - 100) + 1)
elif len(str(n)) == 5:
    print(9 + 900 + (n - 10000) + 1)


Fixed code:
n = int(input())

if len(str(n)) == 6:
    print(90909)
elif len(str(n)) == 4:
    print(909)
elif len(str(n)) == 2:
    print(9)
elif len(str(n)) == 1:
    print(n)
elif len(str(n)) == 3:
    print(9 + (n - 100) + 1)
elif len(str(n)) == 5:
    print(9 + 900 + (n - 10000) + 1)
Buggy code:
n = int(input())
ans = 0
for i in range(1,n + 1):
	if len(int(i)) % 2 == 1:
		ans += 1
print(ans) 

Fixed code:
n = int(input())
ans = 0
for i in range(1,n + 1):
	if len(str(i)) % 2 == 1:
		ans += 1
print(ans)
Buggy code:
n = int(input())
count = 0
for i in range(len(n)):
  if len(str(i))%2 == 1:
    count += 1
print(count)


Fixed code:
N = int(input())
count = 0
for i in range(N):
    if len(str(i+1)) %2 == 1:
        count +=1
print(count)
Buggy code:
n=int(input())
digits=len(str(n))
cnt=0
for i in range(int(digits/2)):
  cnt+=9*(10**(i*2))
cnt+=n-10**(digits-1)+1
print(cnt)

Fixed code:
n=int(input())
digits=len(str(n))
cnt=0
for i in range(int(digits/2)):
  cnt+=9*(10**(i*2))
if digits%2==1:
  cnt+=n-10**(digits-1)+1
print(cnt)
Buggy code:
N = int(input())
count = 0
for i in range(N+1):
  i = str(i)
  if len(i) % 2 == 1:
    count += 1
print(count)

Fixed code:
N = int(input())
count = 0
for i in range(1, N+1):
    if len(str(i)) % 2 == 1:
        count += 1
print(count)
Buggy code:
# -*- coding: utf-8 -*-

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

    if(n < 10):
        print(n-1)
    elif(10 <= n < 100):
        print(9)
    elif(100 <= n < 1000):
        print(9 + n - 99)
    elif(1000 <= n < 10000):
        print(999 - 100 + 9)
    elif(10000 <= n < 1000000):
        print(9 - 99 + 999 - 9999 + n)
    else:
        print(9 - 99 + 999 - 9999 + 99999)


if __name__ == "__main__":
    main()


Fixed code:
# -*- coding: utf-8 -*-

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

    if(n < 10):
        print(n)
    elif(10 <= n < 100):
        print(9)
    elif(100 <= n < 1000):
        print(9 + n - 99)
    elif(1000 <= n < 10000):
        print(999 - 99 + 9)
    elif(10000 <= n < 100000):
        print(9 - 99 + 999 - 9999 + n)
    else:
        print(9 - 99 + 999 - 9999 + 99999)


if __name__ == "__main__":
    main()
Buggy code:
n=int(input())
odd=[i for i in range(1,n+1) if len(str(i))%==1]
print(len(odd))

Fixed code:
n=int(input())
odd=[i for i in range(1,n+1) if len(str(i))%2==1]
print(len(odd))
Buggy code:
n = int(input())

exp = 1000
expMin = 100

result = 9
while n > exp:
  result += (exp - expMin - 1)
  expMin = exp * 10
  exp = exp * 100
  
remainder = n - expMin
if remainder > 0:
  result += remainder
  
print(result)
  

Fixed code:
n = int(input())
 
exp = 1000
expMin = 100
 
result = min(9, n)
while n >= exp - 1:
  result += (exp - expMin)
  expMin = exp * 10
  exp = exp * 100
  
remainder = n - (expMin - 1)
if remainder >= 0:
  result += remainder
  
print(result)
Buggy code:
N = int(input())
count=0
for i in range(1,N+1):
    if len(str(i))==1:
        count+=1
print(count)

Fixed code:
N = int(input())
count=0
for i in range(1,N+1):
    if len(str(i))%2==1:
        count+=1
print(count)
Buggy code:
n = int(input())

ans = 0

for i in range(n):
  if 1<=i<=9:
    ans += 1
  if 100<=i<=999:
    ans += 1
  if 10000<=i<=99999:
    ans += 1
print(ans)

Fixed code:
n = int(input())

ans = 0

for i in range(n+1):
  
    if 1<=i<=9:
      ans += 1
      continue
    if 100<=i<=999:
      ans += 1
      continue
    if 10000<=i<=99999:
      ans += 1
      continue
print(ans)
Buggy code:
n=int(input())
ans=0
for i in range(1,n+1):
    if not len(i)%2==0:
        ans+=1
print(ans)

Fixed code:
n = int(input())

ans = 0
for i in range(1,n+1):
    if len(str(i)) % 2 == 1:
        ans += 1

print(ans)
Buggy code:
Ns = input()
N = int(Ns)
count = 0
for n in range(1, len(Ns), 2):
    count += 10 ** (n + 1) - 1
if len(Ns) % 2 == 1:
    count += N - 10 ** (len(Ns) - 1)
print(count)


Fixed code:
Ns = input()
N = int(Ns)
count = 0

for n in range(1, len(Ns)):
    if n % 2 == 0:
        continue
    count += 10 ** n - 10 ** (n - 1)

if len(Ns) % 2 == 1:
    count += N - 10 ** (len(Ns) - 1) + 1

print(count)
Buggy code:
N=int(input())
h=len(str(N))
if h%2==1:
  a=N-(10**(h-1))+1
  a=a+((100**((h-1)/2))-1)/11
  print(a)
elif h%2==0:
  a=((100**(h/2))-1)/11
  print(a)
  

Fixed code:
N=int(input())
h=len(str(N))
if h%2==1:
  a=N-(10**(h-1))+1
  a=a+((100**((h-1)//2))-1)//11
  print(a)
elif h%2==0:
  a=((100**(h//2))-1)//11
  print(a)
Buggy code:
n=int(input())
digit=1
count=0
while(10**digit<n):
  if(digit%2==1):
    count=count+9*10**(digit-1)
  digit=digit+1
if(digit%2==1):
  count=count+n-10**(digit-1)
print(count)


Fixed code:
n=int(input())
digit=1
count=0
while(10**digit<=n):
  if(digit%2==1):
    count=count+9*10**(digit-1)
  digit=digit+1
if(digit%2==1):
  count=count+n-10**(digit-1)+1
print(count)
Buggy code:
n = int(input())
ans = 0
for i in range(1, n + 1)
	if len(str(i)) % 2 == 1:
    	ans += 1
print(ans)

Fixed code:
n = int(input())
cnt = 0
for i in range(1, n + 1):
  if len(str(i)) % 2 == 1:
    cnt +=1
print(cnt)
Buggy code:
N = int(input())
ans = 0
for i in range(1, N + 1)
	if len(str(i)) % 2 == 1:
    	ans += 1
print(ans)

Fixed code:
N = int(input())

count = 0
for i in range(1, N+1):
  if len(str(i)) % 2 == 1:
    count += 1
print(count)
Buggy code:
int_n = int(input())

n = str(int_n)

n_len = len(n)

ans = 0
tmp = 0

if n_len == 1:
    ans = int_n
else:
    for i in range(1,n_len):
        if i % 2 == 1:
            tmp = (10 ** i) - (10 ** (i-1)) - 1
            ans += tmp
    if (n_len % 2) == 1:
        tmp = int(n[1:]) + 1
        ans += tmp
    ans += 1

print(ans)

Fixed code:
n = input()
int_n = int(n)
n_len = len(n)

ans = 0
tmp = 0

if n_len == 1:
    ans = int_n
else:
    for i in range(1,n_len):
        if i % 2 == 1:
            ans += (10 ** i) - (10 ** (i-1))
    if (n_len % 2) == 1:
        tmp = int_n - (10**(n_len-1)) + 1
        ans += tmp
print(ans)
Buggy code:
N = int(input())
 
i=1
x = 0
 
while True:
  m = 10 ** i - 1
  if N <= m:
    x += max((N - (10 ** (i-1) - 1)), 0)
    break
  x += m
  i += 2
print(x)

Fixed code:
N = int(input())
 
i=1
x = 0
 
while True:
  m = 10 ** i - 1
  if N <= m:
    x += max((N - (10 ** (i-1) - 1)), 0)
    break
  x += (m - (10 ** (i-1) - 1))
  i += 2
print(x)
Buggy code:
N = int(input())

num = [1,10,100,1000,10000, 100000]
num2 = {1:9, 100:1000, 10000:100000}
num3 = {1:1,2:10,3:100,4:1000,5:10000, 6:100000}
count = 0

for n in num:
    if len(str(n)) % 2 == 0: continue
    if len(str(N)) > len(str(n)):
#        print('unk')
#        print(N,n, num2[n])
        count += num2[n]
#print(count)
if len(str(N)) % 2 != 0:
#    count += num3[len(str(N))]*10-N
    count += N-num3[len(str(N))]+1

print(count)


Fixed code:
N = int(input())

num = [1,10,100,1000,10000, 100000]
num2 = {1:9, 100:900, 10000:90000}
num3 = {1:1,2:10,3:100,4:1000,5:10000, 6:100000}
count = 0

for n in num:
    if len(str(n)) % 2 == 0: continue
    if len(str(N)) > len(str(n)):
#        print('unk')
#        print(N,n, num2[n])
        count += num2[n]
#print(count)
if len(str(N)) % 2 != 0:
#    count += num3[len(str(N))]*10-N
    count += N-num3[len(str(N))]+1

print(count)
Buggy code:
n = int(input())
cnt = 0
for i in range(1, n + 1):
    if str(i) % 2 == 1:
        cnt += 1
print(cnt)


Fixed code:
n = int(input())
cnt = 0
for i in range(1, n + 1):
    if len(str(i)) % 2 == 1:
        cnt += 1
print(cnt)
Buggy code:
N = int(input())
c = 0
for i in range(1, N+1):
    if len(str(N)) % 2 == 1:
        c += 1
print(c)

Fixed code:
N = int(input())
c = 0
for i in range(1, N+1):
    if len(str(i)) % 2 == 1:
        c += 1
print(c)
Buggy code:
N = int(input())
k = 0
for i in range(1, N+1):
    if 1 =< i =< 9:
        k += 1
    elif 100 =< i =< 999:
        k += 1
    elif 10000 =< i =< 99999:
        k += 1
print(k)


Fixed code:
N = int(input())
k = 0
for i in range(1, N+1):
    if 1 <= i <= 9:
        k += 1
    elif 100 <= i <= 999:
        k += 1
    elif 10000 <= i <= 99999:
        k += 1
print(k)
Buggy code:
num = int(input())
#print(num)
cnt=0
for i in range(1,num):
    if len(str(i))%2==1:
        cnt = cnt+1
    
        
print(cnt)

Fixed code:
num = int(input())
#print(num)
cnt=0
for i in range(1,num+1):
  #print(i)
  if len(str(i))%2==1:
    cnt = cnt+1
    
        
print(cnt)
Buggy code:
n = int(input())
ans = 0

for i in range (n+1):
    if len(str(i)) % 2 == 1:
        ans += 1

print(ans)

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

for i in range (1, n+1):
    if len(str(i)) % 2 == 1:
        ans += 1

print(ans)