qyliang/CodeNanoFix huggingface dataset:
Buggy code:
x,a,b=map(int,input().split)
if(a-b>=0):
  print('delicious')
elif(b-a<=x):
  print('safe')
else:
  print('dangerous')

Fixed code:
x,a,b=map(int,input().split())
if a-b>=0:
  print("delicious")
elif a-b+x>=0:
  print("safe")
else:
  print("dangerous")
Buggy code:
x,a,b=map(int,input().split())
if a-b>=0:
    print('delicious')
elif x+a-b>0:
    print('safe')
else:
    print('dengerous')

Fixed code:
x, a, b = map(int, input().split())
if a - b >= 0:
    print("delicious")
elif a - b + x >=0:
    print('safe')    
else:
    print('dangerous')
Buggy code:
x,a,b= map(int,input().split())

if(a<x):
  print("delicious")
elif(a+x > b):
  print("safe")
else:
  print("dangerous")


Fixed code:
x,a,b = map(int, input().split())
if a+x < b:
  print("dangerous")
elif a < b:
  print("safe")
else:
  print("delicious")
Buggy code:
x, a, b = map(int, input().split())
if a - b >= 0:
    print('delicious')
elif a - b >= x:
    print('safe')
else:
    print('dangerous')

Fixed code:
x,a,b = map(int,input().split())
if a - b >= 0:
    print("delicious")
elif abs(a - b) > x:
    print("dangerous")
else:
    print("safe")
Buggy code:
x, a, b = map(int, input().split())
if a - b <= 0:
    print('delicious')
elif a - b <= x:
    print('safe')
else:
    print('dangerous')

Fixed code:
x, a, b = map(int, input().split())
if b - a > x:
    print('dangerous')
elif b - a <= 0:
    print('delicious')
else:
    print('safe')
Buggy code:
x, a, b = map(int, input().split())
if b - a < x:
    print("delicious")
elif b - a == x:
    print("safe")
else:
    print("dangerous")


Fixed code:
x, a, b = map(int, input().split())
if b - a <= 0:
    print("delicious")
elif b - a <= x:
    print("safe")
else:
    print("dangerous")
Buggy code:
X , A, B = map(int, input().split())

delicious = True
dangerous = True
if B > A:
    delicious = False
if B > A + X:
    dangerous = False
    
if delicious:
    print('delicious')
elif dangerous:
    print('safe')
else:
    print("dengerous")

Fixed code:
X , A, B = map(int, input().split())
 
delicious = True
dangerous = True
if B > A:
    delicious = False
if B > A + X:
    dangerous = False
    
if delicious:
    print('delicious')
elif dangerous:
    print('safe')
else:
    print("dangerous")
Buggy code:
X,A,B = map(int, input().split())

if A + X < B:
    print("dengerous")
if A < B <= A + X:
    print("safe")
if B <= A:
    print("delicious")

Fixed code:
X,A,B = map(int, input().split())

if A + X < B:
    print("dangerous")
if A < B <= A + X:
    print("safe")
if B <= A:
    print("delicious")
Buggy code:
x, a, b = map(int, input().split())
if b - a > x:
    print("delicious")
elif b - a == x:
    print("safe")
else:
    print("dangerous")

Fixed code:
x, a, b = list(map(int, input().split()))

if a >= b:
    print('delicious')
elif b-a <= x:
    print('safe')
else:
    print('dangerous')
Buggy code:
x,a,b = map(int,input().split())

if a-b >= 0:
    print('delicious')
else:
    if b-a <= x:
        print('safe')
    else:
        print('dengerous')

Fixed code:
x,a,b = map(int,input().split())

if a-b >= 0:
    print('delicious')
else:
    if b-a <= x:
        print('safe')
    else:
        print('dangerous')
Buggy code:
x,a,b = map(int, input().split())

if a >= b:
    print("delicious")

elif x + a < b:
    print("safe")

else:
    print("dangerous")


Fixed code:
x,a,b = map(int, input().split())

if a >= b:
    print("delicious")

elif b - a <= x:
    print("safe")

else:
    print("dangerous")
Buggy code:
x, a, b=map(int, input().split())
if a>=b:
  print("delicious")
elif a+x<=b:
  print("safe")
else:
  print("dangerous")

Fixed code:
x, a, b=map(int, input().split())
if a>=b:
  print("delicious")
elif a+x>=b:
  print("safe")
else:
  print("dangerous")
Buggy code:
X, A, B = map(int, input().split())

if B <= A:
  print("delicious")
elif B <= A + X:
  print("safe")
else:
  print("dangerouns")



Fixed code:
X, A, B = map(int, input().split())
 
if B <= A:
  print("delicious")
elif B <= A + X:
  print("safe")
else:
  print("dangerous")
Buggy code:
x,a,b=map(int,split())
c = b - a 
if c <= 0:
  print("delicious")
elif c <= x:
  print("safe")
else:
  print("dangerous")

Fixed code:
x,a,b=map(int,input().split())
c = b - a 
if c <= 0:
  print("delicious")
elif c <= x:
  print("safe")
else:
  print("dangerous")
Buggy code:
x,a,b = map(int, input().split())

if b - a <= 0:
  print('delicious')
elif a - b <= x:
  print('safe')
else:
  print('dangerous')

Fixed code:
x,a,b  = map(int,input().split())

if (b - a) <= 0:
    print("delicious")

else:
    if x >= (b - a):
        print("safe")

    elif x < (b - a):
        print("dangerous")
Buggy code:
a,b,c = map(int, input().split())
if c >= b:
  print('delicious')
elif c - b <= a:
  print('safe')
else:
  print('dangerous')

Fixed code:
a,b,c = map(int, input().split())
if b >= c:
  print('delicious')
elif c - b <= a:
  print('safe')
else:
  print('dangerous')
Buggy code:
import sys

if sys.platform =='ios':
    sys.stdin=open('input_file.txt')
    
x,a,b=map(int,input().split())


if b<a:
	print("delicious")
elif a<b:
	print("dangerous")
else:
	print("safe")

Fixed code:
import sys

if sys.platform =='ios':
    sys.stdin=open('input_file.txt')
    
x,a,b=map(int,input().split())


if b<=a:
	print("delicious")
elif a+x<b:
	print("dangerous")
else:
	print("safe")
Buggy code:
x, a, b = map(int, input().split())
if b <= a:
  print("delicious")
elif a < b <= x:
  print("safe")
else:
  print("dangerous")

Fixed code:
x, a, b = map(int, input().split())

if b - a <= 0:
    print('delicious')
elif x-(b-a) < 0:
    print('dangerous')
else:
    print('safe')
Buggy code:
x,a,b=map(int,input().split())
if(b<a):
  print("delicious")
elif(b+a<x):
  print("safe")
else:
  print("dangerous")

Fixed code:
x,a,b=map(int,input().split())
if(b<=a):
  print("delicious")
elif(b-a<=x):
  print("safe")
else:
  print("dangerous")
Buggy code:
x,a,b=map(int,input().split())
if b-a>=0:
  print("delicious")
elif -x<=b-a<0:
  print("safe")
else:
  print("dangerous")

Fixed code:
x, a, b = map(int, input().split())
if b-a>x:
    print('dangerous')
elif b-a>0:
    print('safe')
else:
    print('delicious')
Buggy code:
x,a,b = map(int, input().split())
if a => b:
    print("delicious")    
elif b <= x + a:
    print("safe")
else:
    print("dangerous")

Fixed code:
x,a,b = input().split()

if int(b) <= int(a):
    print("delicious")
elif int(a)+int(x) >= int(b):
    print("safe")
else:
    print("dangerous")
Buggy code:
x,a,b = map(int,input().split())
if a<=b:
    print('delicious')
elif b>(a+x):
    print('dangerous')
else:
    print('safe')

Fixed code:
x, a, b = map(int, input().split())

if a >= b:
    print("delicious")
elif a + x >= b:
    print("safe")
elif a + x < b:
    print("dangerous")
Buggy code:
X, A, B = map( int, input().split() )
if A >= B :
   print( "delicious" )
elif B < X : 
   print( "safe" )
else :
   print( "dangerous" )


Fixed code:
X, A, B = map( int, input().split() )
if A >= B :
   print( "delicious" )
elif B - A <= X : 
   print( "safe" )
else :
   print( "dangerous" )
Buggy code:
x,a,b = map(int,input().split())
if b-a<=x:
  print("safe")
elif b-a<=0:
  print("delisious")
else:
  print("dangerous")

Fixed code:
x,a,b = map(int,input().split())
if b-a<=0:
  print("delicious")
elif b-a<=x:
  print("safe")
else:
  print("dangerous")
Buggy code:
x,a,b = map(int,input().split())
if a >= b:
  print("delicious")
elif b-a >= x:
  print("safe")
else:
  print("dangerous")

Fixed code:
x,a,b = map(int,input().split())
if a>=b:
    print('delicious')
elif a<b:
    if b-a<=x:
        print('safe')
    else:
        print('dangerous')
Buggy code:
x, a, b = map(int, input().split())

if x >= (b-a):
  print('delicious')
else:
  print('dangerous')

Fixed code:
x, a, b = map(int, input().split())

if a >= b:
  print('delicious')
elif x >= (b - a):
  print('safe')
else:
  print('dangerous')
Buggy code:
x,a,b = map(int,input().split())
if b-a<=x:
  print("safe")
if b-a<=0:
  print("delicious")
else:
  print("dangerous")

Fixed code:
x, a, b = map(int, input().split())
if b - a <= 0:
    ans = "delicious"
else:
    if b - a - x > 0:
        ans = "dangerous"
    else:
        ans = "safe"
print(ans)
Buggy code:
# -*- coding: utf-8 -*-

X, A, B = map(int, input().split())

if A - B >= 0:
    print("delicious")
elif A - B + X >= 0:
    print("safe")
else:
    print("dengerous")

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

X, A, B = map(int, input().split())

if A - B >= 0:
    print("delicious")
elif A - B + X >= 0:
    print("safe")
else:
    print("dangerous")
Buggy code:
x,a,b=map(int,input().split());print(("delicious,"safe","dangerous")[(b-a>0)+(b-a>x)])

Fixed code:
x,a,b=map(int,input().split());print(("delicious","safe","dangerous")[(b-a>0)+(b-a>x)])
Buggy code:
#https://atcoder.jp/contests/abc065/tasks/abc065_a

x,a,b = map(int,input().split()))

if b-a > x:
    print('dangerous')
elif b-a <= x and b-a > 0:
    print('safe')
else:
    print('delicious')

Fixed code:
#https://atcoder.jp/contests/abc065/tasks/abc065_a

x,a,b = map(int,input().split())

if b-a > x:
    print('dangerous')
elif b-a <= x and b-a > 0:
    print('safe')
else:
    print('delicious')
Buggy code:
x, a, b = map(int, input().split())
if x < a:
    print('delicious')
elif x < a + b:
    print('safe')
else:
    print('dangerous')

Fixed code:
x, a, b = map(int, input().split())

if a >= b:
    print("delicious")
elif a < b <= a + x:
    print("safe")
else:
    print("dangerous")
Buggy code:
s=list(input().split())
x=int(s[0])
a=int(s[1])
b=int(s[2])
if b-a<=0:
  print('delicious')
elif 0<b-a<=x:
  print('safe')
else:
  print('dengerous')

Fixed code:
s=list(input().split())
x=int(s[0])
a=int(s[1])
b=int(s[2])
if b-a<=0:
  print('delicious')
elif 0<b-a<=x:
  print('safe')
else:
  print('dangerous')
Buggy code:
X,A,B = map(int,input().split())

print('delicious' if B <= A else 'safe' if A+B <= X else 'dangerous')

Fixed code:
X,A,B = map(int,input().split())

print('delicious' if B <= A else 'safe' if B <= A+X else 'dangerous')
Buggy code:
x, a, b = map(int,input().split())
 
if x > abs(b - a):
  print("safe")
elif x < abs(b - a):
  print("dangerous")
else:
  print("delicious")

Fixed code:
x, a, b = map(int, input().split())

if b <= a:
    print("delicious")

elif b - a <= x:
    print("safe")

else:
    print("dangerous")
Buggy code:
from sys import stdin

x,a,b = [int(x) for x in stdin.readline().rstrip().split()]

if b-a < 0:
    print("dericious")
elif 0<=b-a<x:
    print("safe")
else:
    print("dangerous")

Fixed code:
from sys import stdin

x,a,b = [int(x) for x in stdin.readline().rstrip().split()]

if b-a <= 0:
    print("delicious")
elif 0<b-a<=x:
    print("safe")
else:
    print("dangerous")
Buggy code:
n=int(input())
a=[int(input()) for i in range(n)]
memo=[0]*n

for i in range(n):
  if i == 0:
    k=0
    memo[0]=1
    ans=0
  else:
    k=a[k]-1
    if memo[k]==0:
      memo[k]=1
    else:
      print(-1)
      exit()
    ans += 1
  if k==2:
    print(ans)
    exit()
  
  

Fixed code:
n=int(input())
a=[int(input()) for i in range(n)]
memo=[0]*n

for i in range(n):
  if i == 0:
    k=0
    memo[0]=1
    ans=0
  else:
    k=a[k]-1
    if memo[k]==0:
      memo[k]=1
    else:
      print(-1)
      exit()
    ans += 1
  if k==1:
    print(ans)
    exit()
Buggy code:
import sys
from io import StringIO
import unittest

def resolve():
    lines = sys.stdin.readlines()
    lines = list(map(lambda x: int(x.rstrip()), lines))
    n = lines[0]
    i = 1
    for c in range(1, n+1):
        i = lines[i]
        if i == 2:
            print(c)
            return
    print(-1)

Fixed code:
import sys
from io import StringIO
import unittest

def resolve():
    lines = sys.stdin.readlines()
    lines = list(map(lambda x: int(x.rstrip()), lines))
    n = lines[0]
    i = 1
    for c in range(1, n+1):
        i = lines[i]
        if i == 2:
            print(c)
            return
    print(-1)
    
resolve()
Buggy code:
n=int(input())
A=[]
for i in range(n):
  A.append(int(input()))
  
a=0
ans=1
for i in range(100100):
  if A[a]==1:
    print(ans)
    exit()
  ans+=1
  a=A[a]
print(-1)

Fixed code:
n=int(input())
A=[]
for i in range(n):
  A.append(int(input()))
A=[0]+A
a=1
ans=1
for i in range(100100):
  if A[a]==2:
    print(ans)
    exit()
  ans+=1
  
  a=A[a]
print(-1)
Buggy code:
n, *A = map(int, open(0).read().split())
x = 0
for i in range(n):
  x, A[x] = A[x]-1, 0
  if x == -1:
    print(-1)
    exit()
  if x == 1:
    print(i+1)
    exit()

Fixed code:
n, *A = map(int, open(0).read().split())
B = [0] * len(A)
x = 0
B[0] = 1
for i in range(n):
  x = A[x]-1
  if B[x]:
    print(-1)
    exit()
  if x == 1:
    print(i+1)
    exit()
  B[x] = 1
Buggy code:
n,ans=int(input()),-1
a,m=[int(input())for i in range(n)],1
for i in range(n):
  m=a[m-1]
  if m==2:ans=m
print(ans)

Fixed code:
n,ans=int(input()),-1
a,m=[int(input())for i in range(n)],1
for i in range(n):
  m=a[m-1]
  if m==2:
    ans=i+1
    break
print(ans)
Buggy code:
n=int(input())
a=[i+1:int(input()) for i in range(n)]
v=1
for c in range(n):
    v=a[v]
    if v==2:
        print(c+1)
        break
else:
    print(-1)

Fixed code:
n=int(input())
a={i+1:int(input()) for i in range(n)}
v=1
for c in range(n):
    v=a[v]
    if v==2:
        print(c+1)
        break
else:
    print(-1)
Buggy code:
n = int(input())

a=[""]*n

for i in range(n):
  a[i] = int(input())

light = a[0]
counter = 1
result = -1
if light == 2:
  print(1)
  exit()
for i in range(n):
  light = a[light-1]
  counter += 1
  print(light)
  if light == 2:
    result = counter
    break
print(result)

Fixed code:
n = int(input())

a=[""]*n

for i in range(n):
  a[i] = int(input())

light = a[0]
counter = 1
result = -1
if light == 2:
  print(1)
  exit()
for i in range(n):
  light = a[light-1]
  counter += 1
  if light == 2:
    result = counter
    break
print(result)
Buggy code:
#65
n = int(input())
a = []
for j in range(n):
    a.append(int(input()))

count = 0
i = 1
for j in range(n+1):
    if a[i-1]==2:
        count += 1
        print(count)
        break
    else:
        i = a[i-1]
        print(a[i-1], i)
        count += 1
    if j ==n:
        print(-1)

Fixed code:
#65
n = int(input())
a = []
for j in range(n):
    a.append(int(input()))

count = 0
i = 1
for j in range(n+1):
    if a[i-1]==2:
        count += 1
        print(count)
        break
    else:
        i = a[i-1]
        count += 1
    if j ==n:
        print(-1)
Buggy code:
N=int(input())
a=[int(input()) for _ in range(N)]

nex=a[0]
cnt=0
while nex != 2 and cnt<N:
    cnt+=1
    nex=a[nex-1]
    
if cnt<N:
    print(cnt)
else:
    print(-1)



Fixed code:
N=int(input())
a=[int(input()) for _ in range(N)]

nex=a[0]
cnt=1
while nex != 2 and cnt<N:
    cnt+=1
    nex=a[nex-1]
    
if cnt<N:
    print(cnt)
else:
    print(-1)
Buggy code:
from collections import defaultdict
N = int(input())
btn = [int(input()) for _ in range(N)]
i, ans = 0, 0
checked = defaultdict(int)
while 1:
  next = btn[i]
  ans += 1
  if next == 2:
    print(ans)
  	break
  if checked[next] == 1:
    print(-1)
    break
  i = next
  checked[i] = 1

Fixed code:
from collections import defaultdict
N = int(input())
btn = [0] + [int(input()) for _ in range(N)]
i, ans = 1, 0
checked = defaultdict(int)
while 1:
  next = btn[i]
  ans += 1
  if next == 2:
    print(ans)
    break
  if checked[next] == 1:
    print(-1)
    break
  i = next
  checked[i] = 1
Buggy code:
n = int(input())
a = [int(input()) for i in range(n)]
on = 1
for i in a:
  on = a[on-1]
  if on == 2:
    print(i+1)
    exit()
print(-1)
  


Fixed code:
n = int(input())
a = [int(input()) for i in range(n)]
on = 1
for i in range(n):
  on = a[on-1]
  if on == 2:
    print(i+1)
    exit()
print(-1)
Buggy code:
N = int(input())
a = [int(input()) for _ in range(N)]

b = [True]*N
i = 0
cnt = 1
while b[i]:
    if a[i] == 2:
        break
    b[i] = False
    i = a[i]-1
    cnt += 1
else:
    print(-1)

Fixed code:
N = int(input())
a = [int(input())-1 for _ in range(N)]

b = [True]*N
b[0] = False
i = a[0]
cnt = 1
while b[i]:
    if i == 1:
        print(cnt)
        break
    b[i] = False
    i = a[i]
    cnt += 1
else:
    print(-1)
Buggy code:
n = int(input())
a = []
for _ in range(n):
    a.append(int(input()))
    
now = 1
nex = [now-1]
ans = 0
flg = 0
while a[now-1] != 0:
    a[now-1], nex = 0, a[now-1]
    now = a[nex-1]
    ans += 1
    if nex == 2:
        flg = 1
        ans += 1
        break

if flg == 1:
    print(ans)
else:
    print(-1)

Fixed code:
n = int(input())
a = []
for _ in range(n):
    a.append(int(input()))
    
now = 1
nex = a[now-1]
ans = 0
flg = 0
while a[now-1] != 0:
    a[now-1], nex = 0, a[now-1]
    now = nex
    ans += 1
    if nex == 2:
        flg = 1
        break

if flg == 1:
    print(ans)
else:
    print(-1)
Buggy code:
N = int(input())
a = [int(input()) for _ in range(N)]
cnt = 1
button = 1
for _ in range(N):
    button = a[button - 1]
    cnt += 1
    if button == 2:
        print(cnt)
        exit()
print(-1)

Fixed code:
N = int(input())
a = [int(input()) for _ in range(N)]
cnt = 0
button = 1
for _ in range(N):
    button = a[button - 1]
    cnt += 1
    if button == 2:
        print(cnt)
        exit()
print(-1)
Buggy code:
def main():
    N = int(input())
    A = tuple([int(input()) for _ in range(N)])

    a = list(A)
    idx = a.index(1)
    ans = 0
    while True:
        btn = a[idx]
        if btn == 0:
            ans = -1
            break
        elif btn == 2:
            break
        a[idx] = 0
        idx = btn - 1
        ans += 1

    print(ans)

main()


Fixed code:
def main():
    N = int(input())
    A = tuple([int(input()) for _ in range(N)])

    a = list(A)
    ans = 0
    try:
        idx = a.index(1)
    except:
        idx = 0
        ans += 1

    while True:
        btn = a[idx]
        if btn == 0:
            ans = -1
            break
        elif btn == 2:
            break
        a[idx] = 0
        idx = btn - 1
        ans += 1

    print(ans)

main()
Buggy code:
N=int(input())
li=[]

for n in range(N):
  a=int(input())
  li.append(a)

check=[0]
s=0
count=1

while s!=1:
  if s in check:
    break
  else:
    s=li[s]-1
    count+=1
    print(s)
    print(count)
  

if s==2:
  print(count)
else:
  print(-1)

Fixed code:
N=int(input())
li=[]

for n in range(N):
  a=int(input())
  li.append(a)

s=0
count=0

while s!=1:
  if count==N:
    break
  else:
    s=li[s]-1
    count+=1

if s==1:
  print(count)
else:
  print(-1)
Buggy code:
n = int(input())
a = [int(input()) for i in range(n)]
cnt = 0
tmp = 0
for i in range(n):
    if a[tmp]==2:
        print(cnt)
        exit()
    else:
        tmp = a[a[tmp]-1]-1
        cnt += 1
    print(tmp)
else:
    print(-1)
    exit()

Fixed code:
n = int(input())
a = [int(input()) for i in range(n)]
cnt = 0
tmp = 0
for i in range(n):
    if a[tmp]==2:
        print(cnt+1)
        exit()
    else:
        tmp =a[tmp]-1
        cnt += 1
else:
    print(-1)
    exit()
Buggy code:
n = int(input())
a = [int(input()) for i in range(n)]
cnt = 0

if 2 not in a:
  print(-1)

x = 1
for i in range(2,n):
 
  x = a[x-1]
  cnt += 1

            
  if x == 2:
    print(cnt)
    exit()

print(-1)

Fixed code:
n = int(input())
a = [int(input()) for i in range(n)]
cnt = 0

if 2 not in a:
  print(-1)
  exit()

x = 1
for i in range(n-1):
 
  x = a[x-1]
  cnt += 1

            
  if x == 2:
    print(cnt)
    exit()

print(-1)
Buggy code:
n = int(input())
a= [int(input()) for _ in range(n)]

count = 0
now = a[0]

while now != 2 and count < n:
  now = a[now-1]
  count += 1
print(count if count<n else -1)

Fixed code:
n = int(input())
a= [int(input()) for _ in range(n)]

count = 1
now = a[0]

while now != 2 and count < n:
  now = a[now-1]
  count += 1
print(count if count<n else -1)
Buggy code:
*A,=map(int,open(0));i=1;t=[0]*A[0]
while i-2and t[i]==0:t[i]=1;i=A[i]
print(-1if i-2else sum(t))

Fixed code:
*A,=map(int,open(0));i=1;t=[0]*A[0]+[0]
while i-2and t[i]==0:t[i]=1;i=A[i]
print(-1if i-2else sum(t))
Buggy code:
n = int(input())
light = [0] * (n+1)

for i in range(1,n+1):
  light[int(input())] = i
s = 2
ans = 0
while light[s] != 0 and light[s] != 1 and ans <= n:
  s = light[s]
  ans += 1

if light[s] == 1:
  print(ans + 1)
else:
  print(-1)

Fixed code:
n = int(input())
light = [0] * (n+1)

for i in range(1,n+1):
  light[i] = int(input())
s = 1
ans = 0
while light[s] != 2 and ans <= n:
  s = light[s]
  ans += 1

if light[s] == 2:
  print(ans + 1)
else:
  print(-1)
Buggy code:
N = int(input())
A = [-1] + [int(input()) for _ in range(N)]
USED = [False] * (N+1)

cnt = 0
prev = 1
while True:
  nxt = A[prev]
  cnt += 1
  
  if nxt == 2:
    break
    
  USED[prev] = True
  if USED[nxt]:
    cnt = -1
    break
    
print(cnt)

Fixed code:
N = int(input())
A = [-1] + [int(input()) for _ in range(N)]
USED = [False] * (N+1)

cnt = 0
prev = 1
while True:
  nxt = A[prev]
  cnt += 1
  
  if nxt == 2:
    break
    
  USED[prev] = True
  if USED[nxt]:
    cnt = -1
    break
    
  prev = nxt
    
print(cnt)
Buggy code:
n=int(input())
a= [list(input()) for _ in range(n)]
nex=[]
k=1
for i in range(len(a)):
    #if k-1==-1:k-1=0
    nex.append(a[k-1])
    k=nex[-1]
    if nex[-1]==2:
        print(len(nex))
        break
    elif len(nex)>=n:print(-1)
    else:pass

Fixed code:
n=int(input())
a = [int(input()) for _ in range(n)]
nex=[]
k=1
for i in range(len(a)):
    nex.append(a[k-1])
    k=nex[-1]
    if nex[-1]==2:
        print(len(nex))
        break
    elif len(nex)>=n:print(-1)
    else:pass
Buggy code:
n = int(input())
A = [int(input()) for _ in range(n)]
used = {1}
pos = 1
count = 0
for _ in range(n):
  pos = A[pos - 1]
  count += 1
  if pos in used:
    print(-1)
    break
  used.append(pos)
  if pos == 2:
    print(count)
    break


Fixed code:
n = int(input())
A = [int(input()) for _ in range(n)]
used = {1}
pos = 1
count = 0
for _ in range(n):
  pos = A[pos - 1]
  count += 1
  if pos in used:
    print(-1)
    break
  used.add(pos)
  if pos == 2:
    print(count)
    break
Buggy code:
n = int(input())
a = [int(input()) for _ in range(n)]

tmp = 0
c = 0

while c != (n + 1):
    tmp = a[tmp-1]

    c += 1
    if tmp == 2:
        print(c+1)
        exit()
        

print(-1)

Fixed code:
n = int(input())
a = [int(input()) for _ in range(n)]

tmp = a[0]
c = 0

while c != (n + 1):
    
    if tmp == 2:
        print(c+1)
        exit()
    else:
        tmp = a[tmp-1]
        c += 1

print(-1)
Buggy code:
n = int(input())
button = []
id = 1
times = 0

for i in range(n):
        button.append(int(input()))

for i in range(n):
        times += 1
        id = button[id-1]
        if id == 2:
                print(id)
                break
else:
        print(-1)

Fixed code:
n = int(input())
button = []
id = 1
times = 0

for i in range(n):
        button.append(int(input()))

for i in range(n):
        times += 1
        id = button[id-1]
        if id == 2:
                print(times)
                break
else:
        print(-1)
Buggy code:
n = int(input())
a = [int(input()) for _ in range(n)]

b = 0
cnt = 0
while cnt <= 100000:
  b = a[b]
  cnt += 1
  if b == 1:
    break
  
if cnt > 100000:
  print(-1)
else:
  print(cnt)

Fixed code:
n = int(input())
a = [int(input()) for _ in range(n)]

b = 1
cnt = 0
while cnt <= 100000:
  b = a[b-1]
  cnt += 1
  if b == 2:
    break
  
if cnt > 100000:
  print(-1)
else:
  print(cnt)
Buggy code:
N = int(input())
a = [int(input()) for _ in range(N)]
a = [s-1 for s in a]
index = a[0]
count = 1
flag = False
while(count <= N):
  if a[index] == 1:
    flag = True
    break
  else:
    index = a[index]
    count += 1
if (flag):
  print(count)
else:
  print(-1)
  

Fixed code:
N = int(input())
a = [int(input()) for _ in range(N)]
a = [s-1 for s in a]
index = a[0]
count = 1
flag = False
while(count <= N):
  if index == 1:
    flag = True
    break
  else:
    count += 1
    index = a[index]

if (flag):
  print(count)
else:
  print(-1)
Buggy code:
N = int(input())
a =[0]*N
for i in range(N):
  a[i] = int(input())

i = 0
l = 1
while 1:
  l=a[l-1]
  if l==2:
    ans=l
    break
  if i>N:
    ans=-1
    break
  i+=1
print(ans)
  

Fixed code:
N = int(input())
a =[0]*N
for i in range(N):
  a[i] = int(input())

i = 0
l = 1
while 1:
  i+=1
  l=a[l-1]
  if l==2:
    ans=i
    break
  if i>N:
    ans=-1
    break
print(ans)