qyliang/CodeNanoFix huggingface dataset:
Buggy code:
#!usr/bin/env python3
from collections import defaultdict, deque
from heapq import heappush, heappop
from itertools import permutations, accumulate
import sys
import math
import bisect
def LI(): return [int(x) for x in sys.stdin.buffer.readline().split()]
def I(): return int(sys.stdin.buffer.readline())
def LS():return [list(x) for x in sys.stdin.readline().split()]
def S():
    res = list(sys.stdin.readline())
    if res[-1] == "\n":
        return res[:-1]
    return res
def IR(n):
    return [I() for i in range(n)]
def LIR(n):
    return [LI() for i in range(n)]
def SR(n):
    return [S() for i in range(n)]
def LSR(n):
    return [LS() for i in range(n)]

sys.setrecursionlimit(1000000)
mod = 1000000007

def solve():
    def gcd(a,b):
        if a == 0:
            return b
        return gcd(b%a,a)
    n,m = LI()
    a = LI()
    s = set()
    for i in a:
        k = 0
        while not i&1:
            i >>= 1
            k += 1
        if not k:
            print(0)
            return
        s.add(k)
    if len(s) != 1:
        print(0)
        return
    a = [i >> 1 for i in a]
    g = a[0]
    l = g
    for i in a[1:]:
        ng = gcd(g,i)
        l = g*i//ng
        g = ng
    print((m//l)-(m//(2*l)))
    return

#Solve
if __name__ == "__main__":
    solve()


Fixed code:
#!usr/bin/env python3
from collections import defaultdict, deque
from heapq import heappush, heappop
from itertools import permutations, accumulate
import sys
import math
import bisect
def LI(): return [int(x) for x in sys.stdin.buffer.readline().split()]
def I(): return int(sys.stdin.buffer.readline())
def LS():return [list(x) for x in sys.stdin.readline().split()]
def S():
    res = list(sys.stdin.readline())
    if res[-1] == "\n":
        return res[:-1]
    return res
def IR(n):
    return [I() for i in range(n)]
def LIR(n):
    return [LI() for i in range(n)]
def SR(n):
    return [S() for i in range(n)]
def LSR(n):
    return [LS() for i in range(n)]

sys.setrecursionlimit(1000000)
mod = 1000000007

def solve():
    def gcd(a,b):
        if a == 0:
            return b
        return gcd(b%a,a)
    n,m = LI()
    a = LI()
    s = set()
    for i in a:
        k = 0
        while not i&1:
            i >>= 1
            k += 1
        if not k:
            print(0)
            return
        s.add(k)
    if len(s) != 1:
        print(0)
        return
    a = [i >> 1 for i in a]
    l = a[0]
    for i in a[1:]:
        g = gcd(l,i)
        l = l*i//g
    print((m//l)-(m//(2*l)))
    return

#Solve
if __name__ == "__main__":
    solve()
Buggy code:
from fractions import gcd
from functools import reduce


def lcm(a, b):
    return a * b // gcd(a, b)


def solve(string):
    n, m, *a = map(int, string.split())
    c = 2**len(bin(a[0]).split("1")[-1])
    l = reduce(lcm, (2 * m if _a % c or not _a // c % 2 else _a for _a in a))
    return str(max((m - l // 2) // l + 1, 0))


if __name__ == '__main__':
    import sys
    print(solve(sys.stdin.read().strip()))


Fixed code:
from functools import reduce


def lcm(a, b):
    ab = a * b
    while b != 0:
        a, b = b, a % b
    return ab // a


def solve(string):
    n, m, *a = map(int, string.split())
    c = 2**len(bin(a[0]).split("1")[-1])
    l = reduce(lcm, (2 * m + 2 if _a % c or not _a // c % 2 else _a for _a in a))
    return str(max((m - l // 2) // l + 1, 0))


if __name__ == '__main__':
    import sys
    print(solve(sys.stdin.read().strip()))
Buggy code:
n, m = map(int, input().split())
a = list(map(int, input().split()))

def calc(n):
    ret = 0
    while n%2 == 0:
        ret +=1
        n/=2
    return ret
flag = True
t = 0
for i in range(n-1):
    t = 2**calc(a[i])
    if calc(a[i]) == calc(a[i+1]):
        continue
    else:
        flag = False
        print(0)
        exit()

a = [a[i]//t for i in range(n)]

def gcd(a, b):
    if a%b == 0:
        return b
    else:
        return gcd(b, a%b)

gcd_a = a[0]
for i in range(1,n):
    print(i,gcd_a)
    p = max(gcd_a, a[i])
    q = min(gcd_a, a[i])
    print(gcd(p,q))
    gcd_a = gcd_a*a[i]//gcd(p, q)

if flag:
    print(m//(2*gcd_a) + (m%(2*gcd_a)//gcd_a))

else:
    print(0)


Fixed code:
n, m = map(int, input().split())
a = list(map(int, input().split()))

for i in range(n):
    a[i] = a[i]//2
    
# print(a)
def calc(n):
    ret = 0
    while n%2 == 0:
        ret +=1
        n//=2
    return ret


flag = True
t = 0
for i in range(n-1):
    t = 2**calc(a[i])
    if calc(a[i]) == calc(a[i+1]):
        # print(calc(a[i]),calc(a[i+1]))
        continue
    else:
        flag = False
        break


def gcd(a, b):
    if a%b == 0:
        return b
    else:
        return gcd(b, a%b)



if flag:
    lcm = 1
    for i in range(n):
        p = max(lcm, a[i])
        q = min(lcm, a[i])
        lcm = lcm*a[i]//gcd(p, q)
        # print(lcm)
    if (m//lcm)%2 == 0:
        print(int((m//lcm)//2))
    else:
        print(int((m//lcm+1)//2))

else:
    print(0)
Buggy code:
n,m = map(int,input().split())
a = list(map(int,input().split()))
cnt = 0
while True:
  if a[0] % 2 == 0:
    a[0] //= 2
    cnt += 1
  else:
    break
div = 2 ** cnt
if div != 1:
  m //= (div//2)
for i in range(1,n):
  if a[i] % div == 0:
    a[i] //= div
    if a[i] % 2 == 0:
      print(0)
      break
  else:
    print(0)
    break
  if cnt == 0:
    print(0)
    break
else:
  print(a)
  lcm = a[0]
  for i in range(1,n):
    big,sml = a[i],lcm
    while sml != 0:
      big,sml = sml,big%sml
    lcm *= a[i] // big
  print(lcm)
  ans = m // (2*lcm)
  print(ans)
  if m % (2*lcm) >= lcm:
    ans += 1
  print(ans)

Fixed code:
n,m = map(int,input().split())
a = list(map(int,input().split()))
cnt = 0
while True:
  if a[0] % 2 == 0:
    a[0] //= 2
    cnt += 1
  else:
    break
div = 2 ** cnt
if div != 1:
  m //= (div//2)
for i in range(1,n):
  if a[i] % div == 0:
    a[i] //= div
    if a[i] % 2 == 0:
      print(0)
      break
  else:
    print(0)
    break
  if cnt == 0:
    print(0)
    break
else:
  #print(a)
  lcm = a[0]
  for i in range(1,n):
    big,sml = a[i],lcm
    while sml != 0:
      big,sml = sml,big%sml
    lcm *= a[i] // big
  #print(lcm)
  ans = m // (2*lcm)
  #print(ans)
  if m % (2*lcm) >= lcm:
    ans += 1
  print(ans)
Buggy code:
N, M = map(int, input().split(" "))
a_n = list(set(map(int, input().split(" "))))
g = a.copy()
 
while not any(x%2 for x in g):
  g = [i //2 for i in g]
  if not all(x%2 for x in g): 
    print(0); exit(0)

def gcd(a, b):
  while b:
    a, b = b, a % b
  return a
 
def lcm(a, b):
  return a * b // gcd(a, b)
 
tot = 1
 
for x in a:
  tot = lcm(tot, x//2)
print((M//tot+1)//2)

Fixed code:
N,M = map(int, input().split())
a_n = list(map(int, input().split()))
g = a_n.copy()
 
while not any(x%2 for x in g): g = [x//2 for x in g]
if not all(x%2 for x in g): print(0); exit(0)
def gcd(a,b):
  while b: a,b = b,a%b
  return a
lcm = lambda a,b: a*b//gcd(a,b)
tot = 1
for x in a_n: tot = lcm(tot,x//2)
print((M//tot+1)//2)
Buggy code:
import sys

read = sys.stdin.read
readline = sys.stdin.buffer.readline
sys.setrecursionlimit(10 ** 8)
INF = float('inf')
MOD = 10 ** 9 + 7


def lcm_base(a, b):
    return (a * b) // gcd(a, b)


def lcm_list(numbers):
    return reduce(lcm_base, numbers, 1)


def main():
    n, m = map(int, readline().split())
    a = np.array(input().split(), np.int64)
    a //= 2
    b = np.copy(a)
    while True:
        c = b % 2
        if c.sum() == 0:
            b //= 2
        elif c.sum() == n:
            break
        else:
            print(0)
            sys.exit()
    d = lcm_list(a)
    if d > 10 ** 9:
        ans = 0
    else:
        ans = (m // d) - (m // (d + d))
    print(ans)


if __name__ == '__main__':
    main()


Fixed code:
import sys
from math import gcd
from functools import reduce
import numpy as np
    
read = sys.stdin.read
readline = sys.stdin.buffer.readline
sys.setrecursionlimit(10 ** 8)
INF = float('inf')
MOD = 10 ** 9 + 7


def lcm_base(a, b):
    return (a * b) // gcd(a, b)


def lcm_list(numbers):
    return reduce(lcm_base, numbers, 1)


def main():
    n, m = map(int, readline().split())
    a = np.array(input().split(), np.int64)
    a //= 2
    b = np.copy(a)
    while True:
        c = b % 2
        if c.sum() == 0:
            b //= 2
        elif c.sum() == n:
            break
        else:
            print(0)
            sys.exit()
    d = lcm_list(a)
    if d > 10 ** 9:
        ans = 0
    else:
        ans = (m // d) - (m // (d + d))
    print(ans)


if __name__ == '__main__':
    main()
Buggy code:
import math
import numpy as np
N,M=map(int,input().split())
A=list(map(int,input().split()))
c=1
test=A[0]
l=0

while test%2 == 0:
  test=test//2
  c*=2
  
for i in np.arange(N-1):
  if A[i+1]%c!=0:
    print(0)
    l=1
    break
  elif A[i+1]%(c*2)==0:
    print(0)
    l=1
    break
  else:
    k=A[i+1]//c
    test=test*k//math.gcd(test,k)
if l==0:
  k=test*c/2


Fixed code:
import math
import numpy as np
N,M=map(int,input().split())
A=list(map(int,input().split()))
c=1
test=A[0]
l=0

while test%2 == 0:
  test=test//2
  c*=2
  
for i in np.arange(N-1):
  if A[i+1]%c!=0:
    print(0)
    l=1
    break
  elif A[i+1]%(c*2)==0:
    print(0)
    l=1
    break
  else:
    k=A[i+1]//c
    test=test*k//math.gcd(test,k)
if l==0:
  k=test*c//2
  print(M//k//2+M//k%2)
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, sep = ' ', end = '\n'):
    print(*var, file=sys.stderr, end = end, sep = sep)

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

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

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, sep = ' ', end = '\n'):
    print(*var, file=sys.stderr, end = end, sep = sep)

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

s, t = input().split()
print(t + s)
Buggy code:
s,t = map(str,input().split())

print(s + t)


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

print(t + s)
Buggy code:
s , t = input().split()
ans = s+t
print (ans)

Fixed code:
s , t = input().split()
ans = t+s
print (ans)
Buggy code:
S, T = input().split()
print(S + T)

Fixed code:
S,T=input().split()
print(T + S)
Buggy code:
S, T = map(str, input().split())

ans = S + T

print(ans)

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

ans = T + S

print(ans)
Buggy code:
import sys
sys.setrecursionlimit(12345678)
import itertools
from collections import Counter
from collections import defaultdict
from collections import deque
import bisect
from heapq import heappush, heappop


def main():
    s, t = input().split()
    print(s + t)

if __name__ == '__main__':
    main()


Fixed code:
import sys
sys.setrecursionlimit(12345678)
import itertools
from collections import Counter
from collections import defaultdict
from collections import deque
import bisect
from heapq import heappush, heappop


def main():
    s, t = input().split()
    print(t + s)

if __name__ == '__main__':
    main()
Buggy code:
ls = list(map(str, input().split()))
print(ls[0]+ls[1])

Fixed code:
ls = list(map(str, input().split()))
print(ls[1]+ls[0])
Buggy code:
S,T=input().split('')
print(T+S)

Fixed code:
S,T=input().split(' ')
print(T+S)
Buggy code:
s,t = input.split()
print(t,s,sep='')

Fixed code:
s,t = input().split()
print(t, s, sep='')
Buggy code:
s = [x.strip() for x in input().split()]
print(s[0] + s[1])

Fixed code:
s = [x.strip() for x in input().split()]
print(s[1] + s[0])
Buggy code:
T,S = input().split()
print(T+S)

Fixed code:
T,S = input().split()
print(S+T)
Buggy code:
A, B = input().split()

print(A+B)


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

print(B+A)
Buggy code:
    s, t = input().split()
    
    print(t + s)

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

print(t + s)
Buggy code:
S,T=map(str(input().split()))
print(str(T)+str(S))

Fixed code:
S,T= map(str,input().split())
print(T+S)
Buggy code:
s = list(input().split())
print(s[0]+s[1])

Fixed code:
s = list(input().split())
print(s[1]+s[0])
Buggy code:
S, T = map(str, input().split())
print(S+T)


Fixed code:
S, T = map(str, input().split())
print(T+S)
Buggy code:
ST = input("").split()
S, T = ST[0], ST[1]
print("{}".format(S + T))

Fixed code:
ST = input("").split()
S, T = ST[0], ST[1]
print("{}".format(T + S))
Buggy code:
a=input().split()
print(a[0]+a[1])

Fixed code:
a=input().split()
print(a[1]+a[0])
Buggy code:
S, T = map(str, input().split())
print(''.join(S+T))


Fixed code:
S, T = map(str, input().split())
print(''.join(T+S))
Buggy code:
s,t = input().split()

print(s+t)

Fixed code:
s,t = input().split()
 
print(t+s)
Buggy code:
s1 = [input().split()]
s1 = s1[::-1]
print("".join(s1))



Fixed code:
s1 = input().split()
s1 = s1[::-1]
print("".join(s1))
Buggy code:
S,T = input().split()
print(S+T)


Fixed code:
S,T = input().split()

U = T+S
print(U)
Buggy code:
S,T = (str(x) for x in input().split())
print(S+T)


Fixed code:
S,T = (str(x) for x in input().split())
print(T+S)
Buggy code:
S ,T = input().split()
print(S+T)

Fixed code:
S ,T= input().split(" ")
print(T+S)
Buggy code:
s,t =input().split()
print(s+t)

Fixed code:
a=input()
s,t = a.split()
print(t+s)
Buggy code:
S, T = map(str,input().split())
print(''.join(map(str,S+T)))

Fixed code:
S, T = map(str,input().split())
print(''.join(map(str,T+S)))
Buggy code:
s,t = map(input().split())

print(t + s)

Fixed code:
s, t = map(str, input().split())
print(t + s)
Buggy code:
import sys
input=sys.stdin.readline

s,t = input().split()

print(s+t)

Fixed code:
import sys
input=sys.stdin.readline

s,t = input().split()

print(t+s)
Buggy code:
import sys
import itertools
input = sys.stdin.readline


def read_values():
    return map(int, input().split())


def read_list():
    return list(read_values())


def read_lists(N):
    return [read_list() for n in range(N)]


def dfs(N, L, s):
    depth = [-1] * N

    stack = [(0, s)]
    while stack:
        d, p = stack.pop()
        depth[p] = d

        for q in L[p]:
            if depth[q] != -1:
                continue
            stack.append((d + 1, q))
    return depth

    
def main():
    S, T = input().split()

    print(S + T)


if __name__ == "__main__":
    main()


Fixed code:
import sys
import itertools
input = sys.stdin.readline


def read_values():
    return map(int, input().split())


def read_list():
    return list(read_values())


def read_lists(N):
    return [read_list() for n in range(N)]


def dfs(N, L, s):
    depth = [-1] * N

    stack = [(0, s)]
    while stack:
        d, p = stack.pop()
        depth[p] = d

        for q in L[p]:
            if depth[q] != -1:
                continue
            stack.append((d + 1, q))
    return depth

    
def main():
    S, T = input().split()

    print(T + S)


if __name__ == "__main__":
    main()
Buggy code:
a, b = input().split(" ")
a += b
print(a)

Fixed code:
a, b = input().split(" ")
print(b + a)
Buggy code:
str_l = list(map(str, input().split()))
print(''.join(str_l))


Fixed code:
str_l = list(map(str, input().split()))
print(''.join(list(reversed(str_l))))
Buggy code:
C  = input()
A , B = C.split()
print(A+B)

Fixed code:
C  = input()
A , B = C.split()
print(B+A)
Buggy code:
s,t = input().split()
print(''.join([s,t]))

Fixed code:
s,t = input().split()
print(''.join([t,s]))
Buggy code:
s, t = input().rstrip().split()
print(s + t)

Fixed code:
s, t = input().rstrip().split()
print(t + s)
Buggy code:
if __name__ == "__main__":
	S, T = input().split()
	print(S + T)

Fixed code:
if __name__ == "__main__":
	S, T = input().split()
	print(T + S)
Buggy code:
s,t=input().split()
print(s+t)


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

print(t+s)
Buggy code:
if __name__=="__main__":
    s,t=input.split()
    print(t+s)

Fixed code:
if __name__=="__main__":
    s,t=input().split()
    print(t+s)
Buggy code:
S,T=input().split()S,T=input().split()
print(T+S)

Fixed code:
S,T = input().split()
print(T+S)
Buggy code:
a=list(map(str, input().split()))

print('{} {}'.format(a[1],a[0]))

Fixed code:
a=list(map(str, input().split()))

print('{}{}'.format(a[1],a[0]))
Buggy code:
s=input().split()
ans= ""
for i in range(len(s)):
    ans += s[i]
print(ans)

Fixed code:
s=input().split()
ans= ""
for i in range(len(s)):
    ans += s[len(s)-1-i]
print(ans)
Buggy code:
s,t = map(input().split())
print(t + s)

Fixed code:
s ,t = input().split()
print(t+s)
Buggy code:
S,T = map(str, input().split())
print('{}{}'.format(S,T))

Fixed code:
S,T = map(str, input().split())
print('{}{}'.format(T,S))
Buggy code:
s,t = [i for i in input().split()]

print(s+t)

Fixed code:
s,t = [i for i in input().split()]
 
print(t+s)
Buggy code:
a,b=str(input().split())
print(a+b)

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

print(b+a)
Buggy code:
#!/usr/bin/env python3
from collections import defaultdict,deque
from heapq import heappush, heappop
from bisect import bisect_left, bisect_right
import sys, random, itertools, math
sys.setrecursionlimit(10**5)
input = sys.stdin.readline
sqrt = math.sqrt
def LI(): return list(map(int, input().split()))
def LF(): return list(map(float, input().split()))
def LI_(): return list(map(lambda x: int(x)-1, input().split()))
def II(): return int(input())
def IF(): return float(input())
def LS(): return list(map(list, input().split()))
def S(): return list(input().rstrip())
def IR(n): return [II() for _ in range(n)]
def LIR(n): return [LI() for _ in range(n)]
def FR(n): return [IF() for _ in range(n)]
def LFR(n): return [LI() for _ in range(n)]
def LIR_(n): return [LI_() for _ in range(n)]
def SR(n): return [S() for _ in range(n)]
def LSR(n): return [LS() for _ in range(n)]
mod = 1000000007
inf = float('INF')

#solve
def solve():
    s, t = LS()
    print("".join(s+t))
    return


#main
if __name__ == '__main__':
    solve()


Fixed code:
#!/usr/bin/env python3
from collections import defaultdict,deque
from heapq import heappush, heappop
from bisect import bisect_left, bisect_right
import sys, random, itertools, math
sys.setrecursionlimit(10**5)
input = sys.stdin.readline
sqrt = math.sqrt
def LI(): return list(map(int, input().split()))
def LF(): return list(map(float, input().split()))
def LI_(): return list(map(lambda x: int(x)-1, input().split()))
def II(): return int(input())
def IF(): return float(input())
def LS(): return list(map(list, input().split()))
def S(): return list(input().rstrip())
def IR(n): return [II() for _ in range(n)]
def LIR(n): return [LI() for _ in range(n)]
def FR(n): return [IF() for _ in range(n)]
def LFR(n): return [LI() for _ in range(n)]
def LIR_(n): return [LI_() for _ in range(n)]
def SR(n): return [S() for _ in range(n)]
def LSR(n): return [LS() for _ in range(n)]
mod = 1000000007
inf = float('INF')

#solve
def solve():
    s, t = LS()
    print("".join(t+s))
    return


#main
if __name__ == '__main__':
    solve()
Buggy code:
str_list = list(input().split(' '))
print(str_list[0]+str_list[1])


Fixed code:
str_list = list(input().split(' '))
print(str_list[1]+str_list[0])
Buggy code:
a,b =map(str,input().split())
print("a+b")

Fixed code:
a,b =map(str,input().split())
print(b+a)
Buggy code:
s=input().split()
print("{}{}".format(s[0],s[1]))

Fixed code:
s=input().split()
print("{}{}".format(s[1],s[0]))
Buggy code:
S,T=map(str,input().split())

print(S+T)

Fixed code:

S, T = map(str, input().split())
print(T+S)
Buggy code:
s, t = input().split().rstrip()
print(t + s)


Fixed code:
s, t = input().rstrip().split()
print(t + s)
Buggy code:
inputValue = input()

output = ''.join(inputValue.split())

print(output)

Fixed code:
inputValue = input()

output = ''.join(reversed(inputValue.split()))

print(output)
Buggy code:
T,S=input().split()
print(T+S)

Fixed code:

S, T = input().split(" ")
print(T+S)
Buggy code:
S,T = input().split()

print(S+T)

Fixed code:
S, T = input().split()

print(T+S)
Buggy code:
s, t = input.split()

print("".join([t,s]))

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

print("".join([t,s]))
Buggy code:
s, t = input().split()
print(s + t)



Fixed code:
s, t = input().split(' ')
print(t+s)
Buggy code:
s, t = input().split()
print(s+t)

Fixed code:
s, t = input().split(" ")
print(t + s)
Buggy code:
s, t = map(str, input().split(" "))
print(s+t)


Fixed code:
t, s = map(str, input().split())
print(s+t)
Buggy code:
str = input().split()

print(str[0]+str[1], sep="")

Fixed code:
str = input().split()
 
print(str[1]+str[0], sep="")
Buggy code:
s, t = input().split()
print(s+t)


Fixed code:
s,t =input().split()
print(t+s)
Buggy code:
print("".join(list(reversed(list(map(str,input().split())))))


Fixed code:
print("".join(list(reversed(list(map(str,input().split()))))))
Buggy code:
string_list = map(str, input().split(" "))
print(string_list[1] + string_list[0])

Fixed code:
string_list = input()
string_list =  list(map(str, string_list.split(" ")))
print(string_list[1] + string_list[0])
Buggy code:
S, T = input().split()
print("{}{}".format(S, T))


Fixed code:

S, T = input().strip().split(" ")

print("{}{}".format(T, S))
Buggy code:
a , b =map(str,input().split())
ans = a + b
print(ans)

Fixed code:
a , b =map(str,input().split())
ans = b + a
print(ans)
Buggy code:
import sys
sys.setrecursionlimit(10**9)
INF=10**18
def input():
    return sys.stdin.readline().rstrip()

def main():
    S,T=input().split()
    print(S+T)

if __name__ == '__main__':
    main()


Fixed code:
import sys
sys.setrecursionlimit(10**9)
INF=10**18
def input():
    return sys.stdin.readline().rstrip()

def main():
    S,T=input().split()
    print(T+S)

if __name__ == '__main__':
    main()
Buggy code:
s, t = map(str, input().split())

print(s+t)

Fixed code:
s, t = map(str, input().split())
 
print(t+s)
Buggy code:
S,T=input().split()
print(S+T)


Fixed code:
S,T=input().split()

print(T+S)
Buggy code:
S,T = map(str,input().split())
print ( S + T )


Fixed code:
S,T = map(str,input().split())
print ( T + S )
Buggy code:
a,b= input().split()

print(a+b)

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

print(b+a)
Buggy code:
S, T= input().split()
print(S+T)

Fixed code:
S, T= input().split()
print(T+S)
Buggy code:
S, T = input().split(" ")
print(S+T)

Fixed code:

S, T = input().split()

print(T+S)
Buggy code:
import sys
input = sys.stdin.readline

INF = float('inf')


def main():
    S, T = map(str, input().split())
    print(S + T)


if __name__ == '__main__':
    main()


Fixed code:
import sys
input = sys.stdin.readline

INF = float('inf')


def main():
    S, T = map(str, input().split())
    print(T + S)


if __name__ == '__main__':
    main()
Buggy code:
# A - Strings

S, T = map(str, input().split())
print(S + T)


Fixed code:
# A - Strings

S, T = map(str, input().split())
print(T + S)
Buggy code:
s,t=list(map(str,input().split()))
print(s+t)


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

print(t + s)
Buggy code:
S,T =map(str,input().split())

print(S,end="")
print(T)

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

print(T,end="")
print(S)
Buggy code:
li = input().split()
print(li[0] + li[1])

Fixed code:
li = input().split()
print(li[1]+li[0])
Buggy code:
def main():
	s,t =input().split
	print(t+s)
main()

Fixed code:
def main():
	s,t =input().split()
	print(t+s)
main()
Buggy code:
A, B = input().split()
print(A+B)

Fixed code:
A, B = input().split()
print(B+A)
Buggy code:
k=input().split()
p=k[0]+k[1]
print(p)


Fixed code:
k=input().split()
p=k[1]+k[0]
print(p)
Buggy code:
s, t = map(input().split())
print(s, t,sep='')

Fixed code:
s, t = input().split()
print(t,s,sep='')
Buggy code:
x,y = map(str,input().split())
x += y
print(x)

Fixed code:
x,y = map(str,input().split())
y += x
print(y)
Buggy code:
a,b = map(str, input().split())
print(b+s)

Fixed code:
a,b = map(str, input().split())
print(b+a)