qyliang/CodeNanoFix huggingface dataset:
Buggy code:
n = int(input())
cnt = 0
for i in range(1,n):
    i = str(i)
    if len(i) == 1 or len(i) == 3 or len(i) == 5:
        cnt +=1
print(cnt)


Fixed code:
n = int(input())
cnt = 0
for i in range(1,n+1):
    i = str(i)
    if len(i) == 1 or len(i) == 3 or len(i) == 5:
        cnt +=1
print(cnt)
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: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()
ans = 0
for i in range(1,n+1):
  if len(str(i)) %2:
    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())
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:
result = 0
for n in range(int(input())):
    result += len(n+1)%2
print(result)

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

if n < 10:
  m = n
elif n < 100:
  m = 9
elif n < 1000:
  m = n - 90
elif n < 10000:
  m = 909
else:
  m = n - 9090
print(m)


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

if n < 10:
  m = n
elif n < 100:
  m = 9
elif n < 1000:
  m = n - 90
elif n < 10000:
  m = 909
elif n < 100000:
  m = n - 9090
else:
  m = 90909
print(m)
Buggy code:
a=int(input())
ans+=0
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 = int(input())

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

Fixed code:
n = int(input())
     
cnt = 0
for i in range(1, n+1):
    str_n = str(i)
    if len(str_n) % 2 != 0:
        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
  else:
      continue

print(ans)

Fixed code:
N = int(input())
ans = 0
 
for i in range(1, N + 1):
  if (len(str(i)) % 2 == 1):
      ans += 1
  else:
      continue
print(ans)
Buggy code:
s = input()
N = int(s)
odd_num = 0
for i in range(1,N+1):
    cnt = 1
    while i // 10 >= 0:
        cnt += 1
        i //= 10
    if cnt % 2:
        odd_num += 1
print(odd_num)

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

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

Fixed code:
n=int(input())
re=0
for i in range(1,n+1):
  if len(str(i))%2==1:
    re+=1
print(re)
Buggy code:
N = int(input())
ct = 0
for i in range(N+1):
  k = i+1
  order = 0
  while(k>0):
  	order += 1
  	k //= 10
  if(order % 2 != 0):
    ct += 1
print(ct)

Fixed code:
N = int(input())
ct = 0
for i in range(N):
  k = i+1
  order = 0
  while(k>0):
  	order += 1
  	k //= 10
  if(order % 2 != 0):
    ct += 1
print(ct)
Buggy code:
n=int(input())
a=0
for i in range(1,n+1):
    a+=len(str(n))%2
print(a)

Fixed code:
n=int(input())
a=0
for i in range(1,n+1):
    a+=len(str(i))%2
print(a)
Buggy code:
N = int(input())
ans = 0
for i in range(1,N):
    string_i = str(i)
    if len(string_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:
N = int(input())
keta = len(str(N))
cnt = 0
for i in range(keta):
  if i%2 == 1:
    cnt += 10**i

if keta%2 == 0:
  print(cnt-1)
else:
  print(cnt + N-10**(keta-1) + 1 - 1)


Fixed code:
N = int(input())
keta = len(str(N))
cnt = 0
for i in range(keta):
  if i%2 == 1:
    cnt += 9*10**(i-1)

if keta%2 == 0:
  print(cnt)
else:
  print(cnt + N-10**(keta-1) + 1)
Buggy code:
A = int(input())

count =  0

if A<10:
    count= A
elif A <100:
    count = 9 
elif A < 1000:
    count = 9 + A - 99
elif A < 10000:
    count = 9 + 900
elif A < 100000:
    count = 9 + 900 + (A-9999)
elif A =100000:
    count = 90909
else:
    

print(count)


Fixed code:
A = int(input())

count =  0

if A<10:
    count= A
elif A <100:
    count = 9 
elif A < 1000:
    count = 9 + A - 99
elif A < 10000:
    count = 9 + 900
elif A < 100000:
    count = 9 + 900 + (A-9999)
else:
    count = 90909
    

print(count)
Buggy code:
n = int(input())
res = 0
for i in range(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(1, n+1):
  num = i
  digits=0
  while num:
    digits += 1
    num//=10
  if digit%2==1:
    ans+=1
    
print(ans)

Fixed code:
n = int(input())

ans = 0
for i in range(1, n + 1):
    num = i
    digits = 0
    while num:
        digits += 1
        num //= 10
    if digits % 2 == 1:
        ans += 1

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

c=0
while N>0:
  N//=10
  c+=1

if c%2==0:
  print((10**c-1)/11)
else: 
  print(N-10**(c-1)+1+(10**(c-1)-1)/11)

Fixed code:
N = int(input())
n=N
c=0
while n>0:
  n//=10
  c+=1

if c%2==0:
  print(int((10**c-1)/11))
else: 
  print(int(N-10**(c-1)+1+(10**(c-1)-1)/11))
Buggy code:
str_N = input()
t = len(str_N)
N = int(str_N)

sum = 0

if t % 2 ==0:
    for i in range(t//2):
        sum += 9*(10**(i))
    print(sum)
else:
    for i in range((t-1)//2):
            sum += 9*(10**(i))
    sum += N - 10**(t-1) + 1
    print(sum)

Fixed code:
str_N = input()
t = len(str_N)
N = int(str_N)

sum = 0

if t % 2 ==0:
    for i in range(t//2):
        sum += 9*(100**(i))
    print(sum)
else:
    for i in range((t-1)//2):
            sum += 9*(100**(i))
    sum += N - 10**(t-1) + 1
    print(sum)
Buggy code:
N = int(input())

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

Fixed code:
num_str = input()
if len(num_str) == 1:
  odd_num = int(num_str)
elif len(num_str) == 2:
  odd_num = 9
elif len(num_str) == 3:
  odd_num = 9 + (int(num_str) - 99)
elif len(num_str) == 4:
  odd_num = 909
elif len(num_str) == 5:
  odd_num = 909 + (int(num_str) - 9999)
else:
  odd_num = 90909
  
print(odd_num)
Buggy code:
a = int(input())
i = 1
cnt = 0
while i <= a:
  if len(i)%2 == 1:
    cnt += 1
  i += 1

print("{}".format(cnt))

Fixed code:
a = int(input())
i = 1
cnt = 0
while i <= a:
  if len(str(i))%2 == 1:
    cnt += 1
  i += 1
 
print("{}".format(cnt))
Buggy code:
import sys

def main():
    N = int(input())
    
    cnt = 0
    for i in range(N):
        if i < 10:
            cnt += 1
        elif 100 <= i < 1000:
            cnt += 1
        elif 10000 <= i < 100000:
            cnt += 1
                    
            
    print(cnt)
main()

Fixed code:
import sys

def main():
    N = int(input())
    
    cnt = 0
    for i in range(1, N+1):
        if 1 <= i < 10:
            cnt += 1
        elif 100 <= i < 1000:
            cnt += 1
        elif 10000 <= i < 100000:
            cnt += 1
                    
    print(cnt)
main()
Buggy code:
N =int(input())
oppai=0

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

print(oppai)

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

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

print(oppai)
Buggy code:
N = int(input())
if N<=9:
    print(N)
elif N<=99:
    print(9)
elif N<=999:
    print(9+(N-99))
elif N<=9999:
    print(909)
elif N<=99999:
    print(909+(N-9999))

Fixed code:
N = int(input())
if N<=9:
    print(N)
elif N<=99:
    print(9)
elif N<=999:
    print(9+(N-99))
elif N<=9999:
    print(909)
elif N<=99999:
    print(909+(N-9999))
elif N<=999999:
    print(90909)
Buggy code:
n=int(input())
t=0
for i in range(n):
  l=len(str(i))
  if l%2!=0:
    t+=1
print(t)


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

if len(N)==1:
  print(N)
elif len(N)==2:
  print(9)
elif len(N)==3:
  print(9+N-99)
elif len(N)==4:
  print(909)
elif len(N)==5:
  print(909+N-9999)
elif len(N)==6:
  print(90909)

Fixed code:
N=input()

if len(N)==1:
  print(int(N))
elif len(N)==2:
  print(9)
elif len(N)==3:
  print(9+int(N)-99)
elif len(N)==4:
  print(909)
elif len(N)==5:
  print(909+int(N)-9999)
elif len(N)==6:
  print(90909)
Buggy code:
s = int(input())

tmp = s + 1
i = 0
output = 0
for i in range(tmp):
    i = i + 1
    if int(len(str(i)))%2 == 0:
        i = 0
    else:
        output = output + 1
        
print(output)
        
    

Fixed code:
s = int(input())

g = 0
output = 0
for i in range(s):
    i = i + 1
    if int(len(str(i)))%2 == 0:
        g=1
    else:
        output = output + 1

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



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

print(cnt)

Fixed code:
N = int(input())
cnt = 0
for n in range(1, N+1):
    if len(str(n)) % 2 != 0:
        cnt += 1
print(cnt)
Buggy code:
N = input()
import math
count = 0
for i in range(1,N+1):
    if int(math.log10(i)) %2 ==1:
        count+= 1
print(count)

Fixed code:
N = int(input())
import math
count = 0
for i in range(1,N+1):
    if int(math.log10(i)) %2 ==0:
        count+=1
print(count)
Buggy code:
n = int(input())
count = 0
for i in range(n):
  if len(i+1)%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())

ans = 0
for i 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:
N = int(input())
ans = 0
for n 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 = int(input())
result = 0
for i in range(1, n):
    k = len(str(i))
    if k % 2 == 1:
        result += 1
print("{}".format(result))

Fixed code:
n = int(input())
result = 0
for i in range(n):
    k = len(str(i+1))
    if k % 2 == 1:
        result += 1
print("{}".format(result))
Buggy code:
n = 0
for i in range(1,int(input())):
    if len(str(i))%2!=0:
        n += 1

print(n)

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

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

n = int(input())
d = len(str(n))
ans = 0

if d == 1:
  print(n)
else:
  for i in range(1, d+1):
    if i % 2 == 0:
      continue

    if i == d:
      ans += n - 10**(i-1)
      break;

    m = 0 if (i == 1) else (10**(i-1))
    mm = 1 if (i == 1) else 0
    ans += (10**(i)) - mm - m

print(ans)

Fixed code:
# coding: utf-8

n = int(input())
d = len(str(n))
ans = 0

if d == 1:
  print(n)
else:
  for i in range(1, d+1):
    if i % 2 == 0:
      continue

    if i == d:
      ans += n - (10**(i-1)) + 1
      break;

    if i == 1:
      ans += 9
    else:
      ans += (10**i) - (10**(i-1))

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

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

count = 0
for i in range(1,N+1):
  a = [_ for _ in str(i)]
  if len(a)%2=1:
    count += 1

print(count)

Fixed code:
N = int(input())

count = 0
for i in range(1,N+1):
  a = [_ for _ in str(i)]
  if len(a)%2==1:
    count += 1

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

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

print(count)

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())
l = len(N)
if l == 1:
  print(N)
elif l == 2:
  print(9)
elif l == 3:
  print(N-90)
elif l == 4:
  print(909)
elif l == 5:
  print(N-9090)
else:
  print(90909)

Fixed code:
N = input()
n = int(N)
l = len(N)

if l == 1:
  print(n)
elif l == 2:
  print(9)
elif l == 3:
  print(n-90)
elif l == 4:
  print(909)
elif l == 5:
  print(n-9090)
else:
  print(90909)
Buggy code:
a = int(input())
count = 0
for i in range(1,a):
  if len(str(i))%2 != 0:
    count += 1
print(count)

Fixed code:
N = int(input())

count = 0

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

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

ans=0
for i in range(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 = input()

cnt=0

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

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

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

if keta == 1:
    print(n)
elif keta == 2:
    print(9)
elif keta == 3:
    print(n - 90 + 9)
elif keta == 4:
    print(909)
elif keta == 5:
    print(n - 9000 + 900 - 90 + 9)
else:
    print(90909)

Fixed code:
n = input()
keta = len(n)
n = int(n)

if keta == 1:
    print(n)
elif keta == 2:
    print(9)
elif keta == 3:
    print(n - 90)
elif keta == 4:
    print(909)
elif keta == 5:
    print(n - 9000  - 90 )
else:
    print(90909)
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):
        ans += 1
        
print(ans)
Buggy code:
n=int(input())
cnt=0
for i in range(1,n+1):
  if len(i)%2==1:
    cnt+=1
print(cnt)

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

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


Fixed code:
num = int(input())
re =0
for i in range(1,num+1):
    if len(str(i)) % 2 != 0:
        re += 1
print(re)
Buggy code:
a = [9, 99, 999, 9999, 99999, 99999]

str = input()
org = int(str)
c = len(str)

if c == 1:
  ans = org
elif c == 2:
  ans = a[0]
elif c == 3:
  ans = a[0] + org - a[1]
elif c == 4:
  ans = a[0] + a[2]
else:
  ans = a[0] + a[2] + 1 

print(ans)

Fixed code:
a = [9, 99, 999, 9999, 99999, 999999]

str = input()
org = int(str)
c = len(str)

if c == 1:
  ans = org
elif c == 2:
  ans = a[0]
elif c == 3:
  ans = a[0] + org - a[1]
elif c == 4:
  ans = a[0] -a[1] + a[2]
elif c == 5:
  ans = a[0] -a[1] + a[2] - a[3] + org
else:
  ans = a[0] -a[1] + a[2] - a[3] + a[4]

print(ans)
Buggy code:
N = str(input())
digit = len(N)
N = int(N)
ans = 0
if digit%2==1:
    ans += N-10**(digit-1)
    digit = digit//10

while digit>0:
    digit-=2
    ans += 9*10**digit
print(ans)

Fixed code:
N = str(input())
digit = len(N)
N = int(N)
ans = 0
if digit%2==1:
    ans += N-10**(digit-1) + 1
    digit -= 1

while digit>0:
    digit-=2
    ans += 9*10**digit
print(ans)
Buggy code:
N = int(input())

ans = 0

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

print(ans)


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

Fixed code:
ans=0
N=int(input())
for i in range(1,N+1):
    if len(str(i))%2==1:
      ans+=1
print(ans)
Buggy code:
n=str(input())
l=len(n)
ans=0
while(l>0):
  if l%2==1 and l==len(n):
    ans+=n-10**(l-1)+1
  elif l%2==1:
    ans+=9*10**(l-1)
  l-=1
print(ans)

Fixed code:
n=str(input())
l=len(n)
ans=0
while(l>0):
  if l%2==1 and l==len(n):
    ans+=int(n)-10**(l-1)+1
  elif l%2==1:
    ans+=9*10**(l-1)
  l-=1
print(ans)
Buggy code:
n = int(input())
c=0
for r in [i+1 for in range(len(str(n))) if i%2==1]:
  for i in range(10**(r-1), min(n+1, 10**r)):
    c++n
print(c)

Fixed code:
n = int(input())
c=0
for r in [i+1 for i in range(0, len(str(n))) if i%2==0]:
  for i in range(10**(r-1), min(n+1, 10**r)):
    c+=1
print(c)
Buggy code:
print(len([None for i in range(int(input())+1) if len(str(i)) % 2]))

Fixed code:
print(len([None for i in range(1, int(input())+1) if len(str(i)) % 2]))
Buggy code:
s = input()
sl = len(s)
N = int(s)
if sl == 1:
    print(N)
elif sl == 2:
    print(9)
elif sl == 3:
    g = 9
    g += (N-100)+1
    print(g)
elif sl == 4:
    print(909)
elif sl == 5:
    g = 909
    g += N-10000+1
    print(g)
elif sl == 5:
    print(90909)

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

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

Fixed code:
s = int(input())
count = 0
for i in range(s+1):
  g = str(i)
  a = len(g)
  if a % 2 != 0:
    count += 1
print(count-1)
Buggy code:
a = int(input())
l = len(str(a))

if l == 2:
    print(int(9))
else:
    ans = a - ((10**(l-1))-1) 
    l -= 1
    while l >= 1:
        if l % 2 == 0:
            l -= 1
        else:
            ans += (10**(l))-1 
            l -= 1
    print(ans)

Fixed code:
a = int(input())
l = len(str(a))

ans = 0
if l % 2 == 0:
    while l >= 1:
        ans += (10 ** (l - 1) - 1) - (10 ** (l - 2) - 1)
        l -= 2
else:
    ans += a - (10 ** (l - 1) - 1)
    l -= 1
    while l >= 1:
        ans += (10 ** (l - 1) - 1)  - (10 ** (l - 2) - 1)
        l -= 2

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


Fixed code:
N = int(input())
nm = len(str(N))-1
summ = 0
for i in range(nm):
    if i ==0:
      summ += 9
    elif i%2 ==0:
      summ += (10**(i+1)-10**(i))
if nm%2 == 0:
    summ += N-(10**nm)+1
print(summ)
Buggy code:
def f(n):
	keta = 0
	while n:
		keta += 1
		n //= 10
	return keta % 2 == 1

N = int(input())
ans = 0
for i in range(N):
	if f(i):
		ans += 1
print(ans)


Fixed code:
def f(n):
	keta = 0
	while n:
		keta += 1
		n //= 10
	return keta % 2 == 1

N = int(input())
ans = 0
for i in range(1, N+1):
	if f(i):
		ans += 1
print(ans)
Buggy code:
# -*- coding:utf8 -*-

n = int(input())
ans = len([i for i in range(1,n) if len(str(i)) % 2 == 1])
print(ans)

Fixed code:
# -*- coding:utf8 -*-

n = int(input())
ans = len([i for i in range(1,n+1) if len(str(i)) % 2 == 1])
print(ans)
Buggy code:
N=int(input())
a=0
for i in range(N):
  if i//10==0:
    a+=1
  elif i//100:
  elif i//1000:
    a+=1
  elif i//10000:
  else:
    a+=1
print(a)
  

Fixed code:
N=int(input())
a=0
for i in range(N):
  if (i+1)//10==0:
    a+=1
  elif (i+1)//100==0:
    a+=0
  elif (i+1)//1000==0:
    a+=1
  elif (i+1)//10000==0:
    a+=0
  elif (i+1)//100000==0:
    a+=1
  else:
    a+=0
print(a)
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())
cnt=0

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

print(cnt)

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

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

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

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

Fixed code:
n = int(input())
s = 0
for i in range(1,n+1):
  l = list(str(i))
  if len(l) % 2 == 1:
    s += 1
print(s)
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())
ans = 0
for i in range(1,N+1):
  if len(str(i))%2==1:
    ans +=1
print(ans)
Buggy code:
N = int(input())
v = 0
if N >= 10:
    v += 9
    if N >= 100:
        if N >= 1000:
            v += 900
            if N >= 10000:
                if N >= 100000:
                    v += 90000
                    if N >= 1000000:
                        pass
                else:
                    v += N % 100000 + 1
        else:
            v += N % 1000 + 1
else:
    v += N % 10
print(v)

Fixed code:
N = int(input())
v = 0
if N >= 10:
    v += 9
    if N >= 100:
        if N >= 1000:
            v += 900
            if N >= 10000:
                if N >= 100000:
                    v += 90000
                    if N >= 1000000:
                        pass
                else:
                    v += N % 100000 - 10000 + 1
        else:
            v += N % 1000 - 100 + 1
else:
    v += N % 10
print(v)
Buggy code:
N=input()
i=int(len(N))
N=int(N)
print(N,i)
x=0
if i%2!=0:
    x=N-10**(i-1)+1
    i=i-1
    if i!=0:
        while i>0:
            i=i-2
            x=x+9*(10**i)
else:
    if N<10:
        x=N
    else:
        while i>1:
            x=x+9*(10**(i-2))
            print(i)
            i=i-2

print(x)


Fixed code:
N=input()
i=int(len(N))
N=int(N)
#print(N,i)
x=0
if i%2!=0:
    x=N-10**(i-1)+1
    i=i-1
    if i!=0:
        while i>0:
            i=i-2
            x=x+9*(10**i)
else:
    if N<10:
        x=N
    else:
        while i>1:
            x=x+9*(10**(i-2))
            #print(i)
            i=i-2

print(x)
Buggy code:
N = input().strip()
o = len(N)
N = int(N)

ans = 0
for i in range(o):
    if i % 2 == 0:
        continue
    ans += hoge(i)

if o % 2 == 1:
    ans += N - 10 ** (o-1) + 1

print(ans)

Fixed code:
def hoge(n):
    return 10 ** n - 10 ** (n - 1)

N = input().strip()
o = len(N)
N = int(N)

ans = 0
for i in range(o):
    if i % 2 == 0:
        continue
    ans += hoge(i)

if o % 2 == 1:
    ans += N - 10 ** (o-1) + 1

print(ans)