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

answers = {1:True, 2:True, 3:True}
answers.pop(A)
answers.pop(B)
list(answers.keys())[0]

Fixed code:
A = int(input())
B = int(input())

answers = {1:True, 2:True, 3:True}
answers.pop(A)
answers.pop(B)
print(list(answers.keys())[0])
Buggy code:
a=int(input())
b=int(input())
if a==1 and b==2:
    print(3)
elif a==1 and b==3:
    print(2)
else:
    print(1)

Fixed code:
a=int(input())
b=int(input())
if (a==1 and b==2) or (a==2 and b==1):
    print(3)
elif (a==1 and b==3) or (a==3 and b==1):
    print(2)
else:
    print(1)
Buggy code:
A = int(input())
B = int(input())

if A == 1 and B == 2:
  print(3)
elif A == 2 and B == 3:
  print(1)
elif A == 1 and B == 3:
  print(2)

Fixed code:
A = int(input())
B = int(input())

if (A==1 or A==2) and (B==1 or B==2):
  print(3)
elif (A==2 or A==3) and (B==2 or B==3):
  print(1)
elif (A==1 or A==3) and (B==1 or B==3):
  print(2)
Buggy code:
a = input()
b = input()
if a+b==3:
  print("3")
elif a+b==4:
  print("2")
else:
  print("1")

Fixed code:
a = int(input())
b = int(input())
if a+b==3:
  print("3")
elif a+b==4:
  print("2")
else:
  print("1")
Buggy code:
int A = int(input())
int B = int(input())

if A = 1:
    if B = 2:
        print(3)
    else if B = 3:
        print(2)

if A = 2:
    if B = 1:
        print(3)
    if B = 3:
        print(1)

if A = 3:
    if B = 1:
        print(2)
    if B = 2:
        print(1)

Fixed code:
A = int(input())
B = int(input())

if A == 1:
    if B == 2:
        print(3)
    if B == 3:
        print(2)

if A == 2:
    if B == 1:
        print(3)
    if B == 3:
        print(1)

if A == 3:
    if B == 1:
        print(2)
    if B == 2:
        print(1)
Buggy code:
a=int(input())
b=int(input())
c=a+b
if c==3:
	print("2")
elif c==4:
	print("3")
else:
	print("1")

Fixed code:
a = int(input())
b = int(input())

c = a+b
if c == 3:
    print(3)
elif c == 4:
    print(2)
else:
    print(1)
Buggy code:
i = [input() for i in range(2)]

if 1 not in i:
  print("1")
elif 2 not in i:
  print("2")
else:
  print("3")

Fixed code:
i = [int(input()) for i in range(2)]

if 1 not in i:
  print("1")
elif 2 not in i:
  print("2")
else:
  print("3")
Buggy code:
import sys
def fastio():
    from io import StringIO
    from atexit import register
    global input
    sys.stdin = StringIO(sys.stdin.read())
    input = lambda : sys.stdin.readline().rstrip('\r\n')
    sys.stdout = StringIO()
    register(lambda : sys.__stdout__.write(sys.stdout.getvalue()))
fastio()

def debug(*var):
    print(*var, file=sys.stderr)

INF = 10**20
MOD = 10**9 + 7
I = lambda:list(map(int,input().split()))
# from math import gcd
# from collections import defaultdict as dd, Counter
# from bisect import bisect_left as bl, bisect_right as br

n, = I()
a = I()
pos = [0]*n
for i in range(n):
    pos[a[i]-1] = i
ans = 1
for i in range(1, n):
    if pos[i] > pos[i-1]:
        ans += 1
    else:
        break
if 1 in a:
    print(ans)
else:
    print(-1)

Fixed code:
import sys
def fastio():
	from io import StringIO
	from atexit import register
	global input
	sys.stdin = StringIO(sys.stdin.read())
	input = lambda : sys.stdin.readline().rstrip('\r\n')
	sys.stdout = StringIO()
	register(lambda : sys.__stdout__.write(sys.stdout.getvalue()))
fastio()

def debug(var):
	print(var, file=sys.stderr)

INF = 10**20
MOD = 10**9 + 7
I = lambda:list(map(int,input().split()))
# from math import gcd
# from collections import defaultdict as dd, Counter
# from bisect import bisect_left as bl, bisect_right as br

a = []
a.append(I()[0])
a.append(I()[0])
for i in range(1, 4):
	if i not in a:
		print(i)
		break
Buggy code:
A=input()
B=input()
if(A==1 and B==2):
  answer=3
elif(A==2 and B==3):
  answer=1
elif(A==3 and B==1):
  answer=2
print(answer)

Fixed code:
A=int(input())
B=int(input())
if(A==1 and B==2):
  answer=3
elif(A==1 and B==3):
  answer=2
elif(A==2 and B==3):
  answer=1
elif(A==2 and B==1):
  answer=3
elif(A==3 and B==1):
  answer=2
elif(A==3 and B==2):
  answer=1
print(answer)
Buggy code:
a = int(input())
b = int(input())
print(6 - a + b)

Fixed code:
a = int(input())
b = int(input())
print(6-a-b)
Buggy code:
a = int(input())
b = int(input())

List = {a, b}

if List == {1, 2}:
  print(3)
if List == {2, 3}:
  print(1)
if List == {3, 1}:
  print(1)



Fixed code:
a = int(input())
b = int(input())

List = {a, b}

if List == {1, 2}:
  print(3)
if List == {2, 3}:
  print(1)
if List == {3, 1}:
  print(2)
Buggy code:
A = (input())
B = (input())

for i in range(1, 4):
  if i == A:
    continue
  if i == B:
    continue
  print(i)
  exit()

Fixed code:
A = int(input())
B = int(input())

for i in range(1, 4):
  if i == A:
    continue
  if i == B:
    continue
  print(i)
  exit()
Buggy code:
print(6-int(input)-int(input))

Fixed code:
print(6 - int(input())-int(input()))
Buggy code:
A = int(input())
B = int(input())

l = [1,2,3]
l.remove(A)
l.remove(B)

print(l)

Fixed code:
A = int(input())
B = int(input())
 
l = [1,2,3]
l.remove(A)
l.remove(B)
 
print(l[0])
Buggy code:
A = int(input())
B = int(input())

Answer = [1, 2, 3]

remove.Answer(A)
remove.Answer(B)

print(Answer[0])

Fixed code:
A = int(input())
B = int(input())
 
Answer = [1, 2, 3]
 
Answer.remove(A)
Answer.remove(B)
 
print(Answer[0])
Buggy code:
a = int(input())
b = int(input())

 print(6-a-b)

Fixed code:
a = int(input())
b = int(input())

print(6-a-b)
Buggy code:
A = int(input())
B = int(input())
ans = [1, 2, 3]
for i in ans:
    if A == i:
        ans.remove(i)
    if B == i:
        ans.remove(i)

print(ans[0])


Fixed code:
A = int(input())
B = int(input())
ans = [1, 2, 3]
for i in range(3):
    if A == i:
        ans.remove(i)
    if B == i:
        ans.remove(i)

print(ans[0])
Buggy code:
A= input()
B= input()

print(A)
print(B)

if int(A) == 1 and  int(B) == 2:
	print(3)
elif int(A) == 2 and int(B) == 3:
  	print(1)
else:
    print(2)

Fixed code:
A = int(input())
B = int(input())

if A==1 and B==2:
    print(3)
elif A==1 and B == 3:
    print(2)
elif A==2 and B==1:
    print(3)
elif A==2 and B==3:
    print(1)
elif A==3 and B==1:
    print(2)
elif A==3 and B==2:
    print(1)
Buggy code:
A = input(int)
B = input(int)

print(6-A-B)

Fixed code:
A=int(input())
B=int(input())
 
print(6-A-B)
Buggy code:
x = int(input())
y = int(input())

if (x==1)&(y==2):
    print('3')
elif (x==2)&(y==3):
    print('1')
elif x==3 & y==1:
    print('2')
elif x==1 & y==3:
    print('2')
elif x==2 & y==1:
    print('3')
else:print('1')

Fixed code:
x = int(input())
y = int(input())

if (x==1)&(y==2):
    print('3')
elif (x==2)&(y==3):
    print('1')
elif (x==3) & (y==1):
    print('2')
elif (x==1) & (y==3):
    print('2')
elif (x==2) & (y==1):
    print('3')
elif (x==3) & (y==2):
    print('1')
Buggy code:
a = int(input())
b = int(input())
if a == 2 and b == 3:
    print('2')
elif a == 1 and b == 2:
    print('3')
else:
    print('1')


Fixed code:
a = int(input())
b = int(input())
if a == 2 and b == 3 or b == 2 and a == 3:
    print('1')
elif a == 1 and b == 2 or b == 1 and a == 2:
    print('3')
else:
    print('2')
Buggy code:
import sys

input = sys.stdin.readline

A = int(input())
B = int(input())
ans = [1,2,3]

for value in ans:
    if A == value or B == value:
        continue:
    else:
        print(value)

Fixed code:
import sys

input = sys.stdin.readline

A = int(input())
B = int(input())
ans = [1,2,3]

for value in ans:
    if A == value or B == value:
        continue
    else:
        print(value)
Buggy code:
import sys

choices = [1,2,3]
for l in sys.stdin:
    choices.remove(int(l))

choices.pop()

Fixed code:
import sys

choices = [1,2,3]
for l in sys.stdin:
    choices.remove(int(l))

print(choices.pop())
Buggy code:
a=int(input())
b=int(input())
x=[1,2,3]
print(x.remove(a,b))

Fixed code:
a=int(input())
b=int(input())
x=[1,2,3]
x.remove(a)
x.remove(b)
print(x[0])
Buggy code:
a = int(input())
b = int(input())

if a == 1 and b == 2:
    print("3")
elif a == 1 and b == 3:
    print("2")
else:
    print("1")

Fixed code:
a = int(input())
b = int(input())

if (a != 3) and (b != 3):
    print("3")
elif (a != 2) and (b != 2):
    print("2")
else:
    print("1")
Buggy code:
a=int(input())
b=int(input())
if (a==1 and b==2) or (a==2 and b==1):
    print(3)
elif (a==2 or b==3) or (a==3 or b==2):
    print(1)
else:
    print(2)

Fixed code:
a=int(input())
b=int(input())
if (a==1 and b==2) or (a==2 and b==1):
    print(3)
elif (a==2 and b==3) or (a==3 and b==2):
    print(1)
else:
    print(2)
Buggy code:
a=int(input())
b=int(input())
if a==1 and b==2:
    print(3)
if a==2 and b==1:
    print(3)
elif a>b:
    print(a-b)
else:
    print(b-a)

Fixed code:
a=int(input())
b=int(input())
if a==1 and b==2:
    print(3)
elif a==2 and b==1:
    print(3)
elif a>b:
    print(a-b)
else:
    print(b-a)
Buggy code:
a = input()
b = input()

ans = 6-a-b
print(ans)


Fixed code:
a = int(input())
b = int(input())

ans = 6-a-b
print(ans)
Buggy code:
a=int(input())
b=int(input())
for i in range(3)
	if((i+1==a or i+1==b)=False):
    	print(i+1)

Fixed code:
a=int(input())
b=int(input())
for i in range(3):
    if((i+1==a or i+1==b)==False):
        print(i+1)
Buggy code:
def wczytaj_liste(): 
    wczytana_lista = input()
    lista_znakow = wczytana_lista.split()
    ostateczna_lista = []
    for element in lista_znakow:
        ostateczna_lista.append(int(element))
    return ostateczna_lista

def A_Round_One():
    A = wczytaj_liste()[0]
    B = wczytaj_liste()[0]
    lista_odpowiedzi = [1,2,3]
    n = 0
    odp = lista_odpowiedzi[n]
    for n in lista_odpowiedzi:
        if A != n and B != n: 
            print(n)
            break

Fixed code:
def wczytaj_liste(): 
    wczytana_lista = input()
    lista_znakow = wczytana_lista.split()
    ostateczna_lista = []
    for element in lista_znakow:
        ostateczna_lista.append(int(element))
    return ostateczna_lista

def A_Round_One():
    A = wczytaj_liste()[0]
    B = wczytaj_liste()[0]
    lista_odpowiedzi = [1,2,3]
    for n in lista_odpowiedzi:
        if A != n and B != n: 
            print(n)
            break
            
A_Round_One()
Buggy code:
a=input()
b=input()
l=[1,2,3]
l.remove(a)
l.remove(b)
ans=l[0]
print(ans)

Fixed code:
a=int(input())
b=int(input())
l=[1,2,3]
l.remove(a)
l.remove(b)
ans=l[0]
print(ans)
Buggy code:
A = input()
B = input()
A = int(A)
B = int(B)

if A+B == 3:
    ans = 3
elif A+B == 4:
    ans == 2
elif A+B == 5:
    ans == 1

Fixed code:
A = input()
B = input()
A = int(A)
B = int(B)

if A+B == 3:
    ans = 3
elif A+B == 4:
    ans = 2
elif A+B == 5:
    ans = 1
print(ans)
Buggy code:
a = int(input())
b = int(input())

for i in [1,2,3]:
  if j not in [a,b]:
    print(j)

Fixed code:
a = int(input())
b = int(input())
 
for i in [1,2,3]:
  if i not in [a,b]:
    print(i)
Buggy code:
a = input()
b = input()
l = [1, 2, 3]
l.remove(a)
l.remove(b)
print(l[0])

Fixed code:
a = int(input())
b = int(input())
l = [1, 2, 3]
l.remove(a)
l.remove(b)
print(l[0])
Buggy code:
answer = [True, True, True]
answer[int(input()) - 1] = False
answer[int(input()) - 1] = False
print(answer.index(True))

Fixed code:
answer = [True, True, True]
answer[int(input()) - 1] = False
answer[int(input()) - 1] = False
print(answer.index(True) + 1)
Buggy code:
a = int(input())
b = int(input())
ans = [i+1 for i in range(3) if i+1 not in [a,b]]
print(ans)


Fixed code:
a = int(input())
b = int(input())
ans = [i+1 for i in range(3) if i+1 not in [a,b]][0]
print(ans)
Buggy code:
print(6-int(input())+int(input()))

Fixed code:
print(6-(int(input())+int(input())))
Buggy code:
A = int(input())
B = int(input())
x=1
for i range(3):
  if x!=A and x!=B:
    print(str(x))
  x+=1

Fixed code:
A = int(input())
B = int(input())
x=1
for i in range(3):
  if x!=A and x!=B:
    print(str(x))
  x+=1
Buggy code:
A=int(input())
B=int(input())
if A==1 and B==2:
  print(3)
elif A==2 and B==3:
  print(1)
else A==3 and B==1:
  print(2)


Fixed code:
A=int(input())
B=int(input())
if (A==2 and B==3) or (A==3 and B==2):
  print(1)
elif (A==1 and B==3) or (A==3 and B==1):
  print(2)
else:
  print(3)
Buggy code:
s=[int(input()) for i in range(2)]
elif s[0]+s[1]==3:
	print("3")
elif s[0]+s[1]==4:
	print("2")
elif s[0]+s[1]==5:
	print("1")
else:
	print("error")

Fixed code:
s=[int(input()) for i in range(2)]
if s[0]+s[1]==3:
	print("3")
elif s[0]+s[1]==4:
	print("2")
elif s[0]+s[1]==5:
	print("1")
else:
	print("error")
Buggy code:
a = input()
b = input()
print(int(6-a-b))

Fixed code:
a=int(input())
b=int(input())
print(6-a-b)
Buggy code:
A=int(input())
B,C=input().split()
D=''
for i in range(A):
  D=B[i]+C[i]
print(D)


Fixed code:
A=int(input())
B,C=input().split()
D=''
for i in range(A):
  D+=B[i]
  D+=C[i]
print(D)
Buggy code:
n = int(input())
s, t = map(int, input().split())

for i, j in zip(s, t):
  print(s+t, end='')
  
print()

Fixed code:
n = int(input())
s, t = input().split()

for i, j in zip(s, t):
  print(i+j, end='')
  
print()
Buggy code:
N=int(input())
S=input().split()
L=[]
print(S[0][0])
for i in range(N):
    for j in range(2):
        L.append(S[j][i])
print(*L,sep="")

Fixed code:
N=int(input())
S=input().split()
L=[]
for i in range(N):
    for j in range(2):
        L.append(S[j][i])
print(*L,sep="")
Buggy code:
n=int(input())
s,t=input().split()
out=""
for i=range(n):
  out+=s[i]+t[i]
print(out)

Fixed code:
n=int(input())
s,t=input().split()
out=""
for i in range(n):
  out+=s[i]+t[i]
print(out)
Buggy code:
n = int(input())

s, t = map(input().split())

ans = ''

for i in range(n):
    ans += s[i]
    ans += t[i]

print(ans)

Fixed code:
n = int(input())
s, t = map(str, input().split())

ans=''
for i in range(n):
    ans += s[i]
    ans += t[i]
print(ans)
Buggy code:
N = int(input())
S, T = input().split()
part = [None for n in range(N)]
for i in range(N):
    part[i] = (S[i] + T[i])
    print(part[i])
print("".join(part))

Fixed code:
N = int(input())
S, T = input().split()
part = [None for n in range(N)]
for i in range(N):
    part[i] = (S[i] + T[i])
print("".join(part))
Buggy code:
N = int(input())
S, T = map(input().split())

s=""
for i in range(N):
  s = s + S[i] + T[i]
  
print(s)
  

Fixed code:
N = int(input())
S, T = map(str, input().split())

s=""
for i in range(N):
  s = s + S[i] + T[i]
  
print(s)
Buggy code:
n = int(input())
st = str(input()).split(' ')
ans = ''
for i in range(n):
    ans += st[i][0]
    ans += st[i][1]
print(ans)

Fixed code:
n = int(input())
st = str(input()).split(' ')
ans = ''
for i in range(n):
    ans += st[0][i]
    ans += st[1][i]
print(ans)
Buggy code:
N=input()
S,T=input().split
print(*[s+t for s,t in zip(S,T)],sep="")


Fixed code:
N=input()
S,T=input().split()
print(*[s+t for s,t in zip(S,T)],sep="")
Buggy code:
n = input()
s, t = input().split()

for i in range(n):
  w += s[i] + t[i]

print(w)

Fixed code:
n = int(input())
s, t = input().split()
w = ''
 
for i in range(n):
    w += s[i] + t[i]
 
print(w)
Buggy code:
n=int(input())
s,t=str(input().split())
for i in range(n):
    print(s[i], end='')
    print(t[i], end='')

Fixed code:
n=int(input())
s,t=input().split(' ')
for i in range(n):
    print(s[i], end='')
    print(t[i], end='')
Buggy code:
N = int(input())
Input = input().split()

S = (list(Input[0]))
T = (list(Input[1]))

new = "a"

for i in range(N):
    new += S[i]
    new += T[i]

print(new[0:2*N])

Fixed code:
N = int(input())
Input = input().split()

S = (list(Input[0]))
T = (list(Input[1]))

new = "a"

for i in range(N):
    new += S[i]
    new += T[i]

print(new[1:2*N+1])
Buggy code:
n = int(input())
things = input().split()
s = ""
for i in range(n):
  s += thing[0][i]
  s += thing[1][i]
print(s)

Fixed code:
n = int(input())
things = input().split()
s = ""
for i in range(n):
  s += things[0][i]
  s += things[1][i]
print(s)
Buggy code:
n = int(input())

s,t = input().split()

ans = s[0]+ t[0]
for i in range(1,n):
    ans = ans + s[i]+ t[i]
    print(ans)

Fixed code:
n = int(input())
 
s,t = input().split()
 
ans = s[0]+ t[0]
if n == 1:
    print(ans)
else:
    for i in range(1,n):
        ans = ans + s[i]+ t[i]
    print(ans)
Buggy code:
inp_1 = int(input())
inp_2 = input().split(" ")
r = ""

for i in range(inp_1):
  r += inp_2[0][i]
  r += inp_2[1][i]

print(o)


Fixed code:
inp_1 = int(input())
inp_2 = input().split(" ")
r = ""

for i in range(inp_1):
  r += inp_2[0][i]
  r += inp_2[1][i]

print(r)
Buggy code:
N=int(input())
S,T=input().split()
ans=S[0]+T[0]
for i in range(1,N):
    ans=ans+s[i]+T[i]
print(ans)

Fixed code:
N=int(input())
S,T=input().split()
ans=S[0]+T[0]
for i in range(1,N):
    ans=ans+S[i]+T[i]
print(ans)
Buggy code:
n = int(input().strip())
S, T = [input().strip() for i in range(2)]

ans = ''

for i in range(n):
	ans += S[i] + T[i]
    
print(ans)

Fixed code:
n = int(input().strip())
S, T = input().strip().split(' ')

ans = ''

for i in range(n):
    ans += S[i] + T[i]
    
print(ans)
Buggy code:
N = input()
S, T = list(map(str, input().split()))

A = ''
for i in range(N):
    A += S[i]
    A += T[i]

print(A)

Fixed code:
N = int(input())
S, T = list(map(str, input().split()))

A = ''
for i in range(N):
    A += S[i]
    A += T[i]

print(A)
Buggy code:
n = int(input())
s,t = map(str,input().split())
s = list(s)
t = list(t)
ans =[]
print(s)
for i in range(n):
    ans.append(s[i])
    ans.append(t[i])
''.join(ans)


print(ans)



Fixed code:
n = int(input())

s0,t0 = map(str,input().split())
s = list(s0)
t = list(t0)
ans = []

for i in range(n):
    ans.append(s[i])
    ans.append(t[i])
    
print("".join(ans))
Buggy code:
#b strings with the same length
n=int(input())
sentence=input().split()
ans=""
for i in range(n):
    ans+=sentence[i]
print(ans)

Fixed code:
#b strings with the same length
n=int(input())
sentence=input().split()
ans=""
for i in range(n):
    ans=ans+sentence[0][i]+sentence[1][i]
print(ans)
Buggy code:
N = int(input())
inputted = list(map(int, input().split()))
S = inputted[0]
T = inputted[1]

answer = ''
for s, t in zip(S, T):
    answer += s + t

answer = ''.join([s + t for s, t in zip(S, T)])

print(answer)

Fixed code:
N = int(input())
inputted = input().split()
S = inputted[0]
T = inputted[1]

answer = ''
for s, t in zip(S, T):
    answer += s + t

answer = ''.join([s + t for s, t in zip(S, T)])

print(answer)
Buggy code:
n = int(input())
s, t = list(input().split())
ans = []
for i in range(n):
  ans += s[i]
  ans += t[i]

print(ans)


Fixed code:
n = int(input())
s, t = list(input().split())
ans = ""
for i in range(n):
  ans += s[i]
  ans += t[i]

print(ans)
Buggy code:
n=int(input())
s=input()
t=input()
for i in range(n):
  print(s[i],end="")
  print(t[i],end="")


Fixed code:
n=int(input())
s,t=input().split()
for i in range(n):
  print(s[i],end="")
  print(t[i],end="")
Buggy code:
n = int(input())
s, t = input().split()
ans = []

for i in range(n):
    ans += s[i] + t[i]

print(*ans)

Fixed code:
n=int(input())
s,t=input().split()
ans=""
for i in range(n):
    ans+=s[i]
    ans+=t[i]
print(ans)
Buggy code:
#a, b, c = map(int, input().split)
lens = int(input())
char1, char2 = input().split()
chars = []
print('1', char1)
print('2', char2)
for n in range(lens):
    chars.append(char1[n])
    chars.append(char2[n])

print(''.join(chars))

Fixed code:
#a, b, c = map(int, input().split)
lens = int(input())
char1, char2 = input().split()
chars = []
for n in range(lens):
    chars.append(char1[n])
    chars.append(char2[n])

print(''.join(chars))
Buggy code:
n = int(input())
s, t = map(list, input().split())

r = []

for i in range(n):
    r.append(s[i])
    r.append(t[i])

print(r)

Fixed code:
n = int(input())
s, t = map(list, input().split())

r = []

for i in range(n):
    r.append(s[i])
    r.append(t[i])

print(''.join(r))
Buggy code:
n = int(input())
s, t = map(input().split())
ans = ""
for i, j in zip(s,t):
  ans += i
  ans += j
print(ans)

Fixed code:
n = int(input())
s, t = map(str, input().split())
ans = ""
for i, j in zip(s,t):
  ans += i
  ans += j
print(ans)
Buggy code:
def wczytaj_liste(): 
    wczytana_lista = input()
    lista_znakow = wczytana_lista.split()
    ostateczna_lista = []
    for element in lista_znakow:
        ostateczna_lista.append(int(element))
    return ostateczna_lista

def B_strings(): 
    N = wczytaj_liste()[0]
    S = input()
    T = input()
    odp = []
    for i in range(N): 
        odp.append(S[i])
        odp.append(T[i])
    print(''.join(odp))

B_strings()

Fixed code:
def wczytaj_liste(): 
    wczytana_lista = input()
    lista_znakow = wczytana_lista.split()
    ostateczna_lista = []
    for element in lista_znakow:
        ostateczna_lista.append(int(element))
    return ostateczna_lista

def B_strings(): 
    N = wczytaj_liste()[0]
    wczytaj = input()
    S, T = wczytaj.split()
    odp = []
    for i in range(N): 
        odp.append(S[i])
        odp.append(T[i])
    print(''.join(odp))

B_strings()
Buggy code:
n = input()
str = input()
sl = list(str.split(" ")[0])
tl = list(str.split(" ")[1])

for i in range(0,n-1):
    print(sl[i],end="")
    print(tl[i],end="")



Fixed code:
n = input()
str = input()
sl = list(str.split(" ")[0])
tl = list(str.split(" ")[1])

for i in range(0,int(n)):
    print(sl[i],end="")
    print(tl[i],end="")
Buggy code:
def main():
    input()
    l = list(input().split())
    ans = []
    for i in range(len(l)):
        ans.append(l[0][i])
        ans.append(l[1][i])
    print(''.join(ans))

if __name__ == '__main__':
    main()

Fixed code:
def main():
    input()
    l = list(input().split())
    ans = []
    for i in range(len(l[0])):
        ans.append(l[0][i])
        ans.append(l[1][i])
    print(''.join(ans))

if __name__ == '__main__':
    main()
Buggy code:
N = int(input())
string1 , string2 = map(str,input().split())
res = ''
j = 0
k = 0
for i in range((2*N)):
	if(i%2!=0):
		res+=string1[j]
		j+=1
	else:
		res+=string2[k]
		k+=1
print(res)


Fixed code:
N = int(input())
string1 , string2 = map(str,input().split())
res = ''
j = 0
k = 0
for i in range((2*N)):
	if(i%2==0):
		res+=string1[j]
		j+=1
	else:
		res+=string2[k]
		k+=1
print(res)
Buggy code:
n=int(input())
s,t=map(input().split())
k=[]
for i in range(n):
    k.append(s[i])
    k.append(t[i])
print("".join(k))


Fixed code:
n=int(input())
s,t=input().split()
k=[]
for i in range(n):
    k.append(s[i])
    k.append(t[i])
print("".join(k))
Buggy code:
import sys
row = sys.stdin.readline
def read_int(row):
    return int(row().rstrip())

def read_strings(row):
    return list(map(str, row().split()))

N = read_int(row)
S,T= read_strings(row)

st = ""
for i in range(N *2):
    if i%2 == 0:
        st +=S[i//2]
    else:
        st +=T[i//2]
        

Fixed code:
import sys
row = sys.stdin.readline
def read_int(row):
    return int(row().rstrip())

def read_strings(row):
    return list(map(str, row().split()))

N = read_int(row)
S,T= read_strings(row)

st = ""
for i in range(N *2):
    if i%2 == 0:
        st +=S[i//2]
    else:
        st +=T[i//2]
print(st)
Buggy code:
n = int(input())
s, t = map(int, input().split())

result = ''
for idx in range(n):
  result += s[idx] + t[idx]

  print(result)

Fixed code:
n = int(input())
s, t = input().split()

result = ''
for idx in range(n):
  result += s[idx] + t[idx]

print(result)
Buggy code:
s, t = map(str, input().split())
out = [si+ti for si, ti in zip(s, t)]
print("".join(out))

Fixed code:
n = input()
s, t = map(str, input().split())
out = [si+ti for si, ti in zip(s, t)]
print("".join(out))
Buggy code:
N = int(input())
A,B = input().split()
ans = []
for i in range(N+1):
  ans.append(A[i] + B[i])
print("".join(ans))

Fixed code:
N = int(input())
A,B = input().split()
ans = []
for i in range(0,N):
  ans.append(A[i] + B[i])

print("".join(ans))
Buggy code:
n=int(input())
a=list(map(str,input().split()))
k=[]
for i in range(n):
    for j in range(2):
        k.append(a[j][i])
print(k)

Fixed code:
n=int(input())
a=list(map(str,input().split()))
k=[]
for i in range(n):
    for j in range(2):
        k.append(a[j][i])
print(''.join(k))
Buggy code:
n=int(input())
s,t=input().sprit()
s=list(input())
t=list(input())
a=[]
for i in range(0,n):
  a.append(s[i])
  a.append(t[i])
print(''.join(a))

Fixed code:
n=int(input())
s,t=list(input().split())
a=[]
for i in range(0,n):
  a.append(s[i])
  a.append(t[i])
print(''.join(a))
Buggy code:
N = int(nput())
S, T = input().split()
ans = ""
for i in range(N):
  ans = ans + S[i:i+1] + T[i:i+1]
  
print(ans)

Fixed code:
N=int(input())
S,T=input().split()
ans=''
for i in range(N):
    ans+=(S[i]+T[i])
print(ans)