Harryxun/testdata huggingface dataset:
Buggy python submission (verdict: Runtime Error):
s = input()
n = len(s)

cnt = 0
for i in range(n):
  if (s[i] != s[n - 1 - i]) 
  cnt+=1

print(cnt)


Fixed submission:
s = input()
n = len(s)

cnt = 0
for i in range(n//2):
  if (s[i] != s[n - 1 - i]):
    cnt+=1

print(cnt)
Buggy python submission (verdict: Runtime Error):
#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i< (n); ++i)
using namespace std;
typedef long long ll;

int main() {
  int n;
  cin >> n;
  vector<int> d(n);
  rep(i, n) cin >> d[i];
  int ans = 0;
  rep(i, n) for (int j = i+1; j<n; ++j) {
    ans += d[i]*d[j];
  }
  cout << ans << endl;
  return 0;
  }

Fixed submission:
n = int(input())
d = list(map(int, input().split()))

ans = 0
for i in range(n):
  for j in range(i+1, n):
    ans +=d[i]* d[j]
print(ans)
Buggy python submission (verdict: Runtime Error):
import bisect

def solve():
  n = int(input())
  L = [int(i) for i in input().split()]
  L.sort()
  total = 0
  for s in range(n-2):
    for m in range(s+1, n-1):
      #二分探索モジュールbisect
      l = bisect.bisect_left(l,l[s]+l[m], 0, n)
      if l>m: total += l-m-1
  print(total)

  return 0

if __name__ == "__main__":
  solve()

Fixed submission:
import bisect

def solve():
  n = int(input())
  L = [int(i) for i in input().split()]
  L.sort()
  total = 0
  for s in range(n-2):
    for m in range(s+1, n-1):
      #二分探索モジュールbisect
      l = bisect.bisect_left(L,L[s]+L[m], 0, n)
      if l>m: total += l-m-1
  print(total)

  return 0

if __name__ == "__main__":
  solve()

Buggy python submission (verdict: Runtime Error):
import bisect

def solve():
  n = int(input())
  L = [int(i) for i in input().split()]
  L.sort()
  total = 0
  for s in range(n-2):
    for m in range(s+1, n-1):
      l = bisect.bisect_left(l,l[s]+l[m], 0, n)
      if l>m: total += l-m-1
  print(total)

  return 0

if __name__ == "__main__":
  solve()

Fixed submission:
import bisect

def solve():
  n = int(input())
  L = [int(i) for i in input().split()]
  L.sort()
  total = 0
  for s in range(n-2):
    for m in range(s+1, n-1):
      #二分探索モジュールbisect
      l = bisect.bisect_left(L,L[s]+L[m], 0, n)
      if l>m: total += l-m-1
  print(total)

  return 0

if __name__ == "__main__":
  solve()

Buggy python submission (verdict: Runtime Error):
import bisect

def solve():
  n = int(input())
  l = [int(i) for i in input().split()]
  l.sort()
  total = 0
  for s in range(n-2):
    for m in range(s+1, n-1):
      l = bisect.bisect_left(l,l[s]+l[m], 0, n)
      if l>m: total += l-m-1
  print(total)

  return 0

if __name__ == "__main__":
  solve()

Fixed submission:
import bisect

def solve():
  n = int(input())
  L = [int(i) for i in input().split()]
  L.sort()
  total = 0
  for s in range(n-2):
    for m in range(s+1, n-1):
      #二分探索モジュールbisect
      l = bisect.bisect_left(L,L[s]+L[m], 0, n)
      if l>m: total += l-m-1
  print(total)

  return 0

if __name__ == "__main__":
  solve()
Buggy python submission (verdict: Runtime Error):
n=int(input())
if n===1:print(1)
else:print((n+1)//2/n)

Fixed submission:
n=int(input())
if n==1:print(1)
else:print((n+1)//2/n)
Buggy python submission (verdict: Runtime Error):
import math

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

#最大公約数: greatest common divisor(gcd)
g = math.gcd(a,b)

def prime_decomposition(n):
  i=2
  table = []
  while i*i <= n:
    while n%i==0:
      n//=i
      table.append(i)
    i+=1
  if n>1:
    table.append(n)
  return table
print(len(set(prime_decomposition(g)))+1)

Fixed submission:
# import math
from fractions import gcd

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

#最大公約数: greatest common divisor(gcd)
# g = math.gcd(a,b)
g=gcd(a,b)

def prime_decomposition(n):
  i=2
  table = []
  while i*i <= n:
    while n%i==0:
      n//=i
      table.append(i)
    i+=1
  if n>1:
    table.append(n)
  return table
print(len(set(prime_decomposition(g)))+1)

Buggy python submission (verdict: Runtime Error):
import math

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

#最大公約数: greatest common divisor(gcd)
g = math.gcd(a,b)

def prime_decomposition(n):
  i=2
  table = []
  while i*i <= n:
    while n%i==0:
      n//=i
      table.append(i)
    i+=1
  if n>1:
    table.append(n)
  return table
print(len(set(prime_decomposition(g)))+1)

Fixed submission:
# import math
from fractions import gcd

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

#最大公約数: greatest common divisor(gcd)
# g = math.gcd(a,b)
g=gcd(a,b)

def prime_decomposition(n):
  i=2
  table = []
  while i*i <= n:
    while n%i==0:
      n//=i
      table.append(i)
    i+=1
  if n>1:
    table.append(n)
  return table
print(len(set(prime_decomposition(g)))+1)

Buggy python submission (verdict: Runtime Error):
import math

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

#最大公約数: greatest common divisor(gcd)
g = math.gcd(a,b)
print(g)
def prime_decomposition(n):
  i=2
  table = []
  while i*i <= n:
    while n%i==0:
      n//=i
      table.append(i)
    i+=1
  if n>1:
    table.append(n)
  return table
print(len(set(prime_decomposition(g)))+1)

Fixed submission:
# import math
from fractions import gcd

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

#最大公約数: greatest common divisor(gcd)
# g = math.gcd(a,b)
g=gcd(a,b)

def prime_decomposition(n):
  i=2
  table = []
  while i*i <= n:
    while n%i==0:
      n//=i
      table.append(i)
    i+=1
  if n>1:
    table.append(n)
  return table
print(len(set(prime_decomposition(g)))+1)
Buggy python submission (verdict: Runtime Error):
if a >= 3200:
    print(s)
elif a < 3200:
    print('red')

Fixed submission:
a = int(input())
s = input()

if a >= 3200:
    print(s)
elif a < 3200:
    print('red')

Buggy python submission (verdict: Runtime Error):
s = 'pink'
if a >= 3200:
    print(s)
elif a < 3200:
    print('red')

Fixed submission:
a = int(input())
s = input()

if a >= 3200:
    print(s)
elif a < 3200:
    print('red')

Buggy python submission (verdict: Runtime Error):
if a >= 3200:
    print('s')
elif a < 3200:
    print('red')

Fixed submission:
a = int(input())
s = input()

if a >= 3200:
    print(s)
elif a < 3200:
    print('red')
Buggy python submission (verdict: Runtime Error):
a, b, c, d, e = int(input()),int(input()),int(input()),int(input()),int(input())
k = int(input())
print("Yay!" if e-a<=k else":("))


Fixed submission:
a = int(input())
b = int(input())
c = int(input())
d = int(input())
e = int(input())
k = int(input())

ab = b-a
ac = c-a
ad = d-a
ae = e-a
bc = c-b
bd = d-b
be = e-b
cd = d-c
ce = e-c
de = e-d

if ab <= k and ac <= k and ad <= k and ae <= k and bc <= k and bd <= k and be <= k and cd <= k and ce <= k and de <= k:
    print("Yay!")
else:
    print(":(")
Buggy python submission (verdict: Runtime Error):
from math import gcd

a,b,k = map(int, input().split())
print(gcd(a,b))

Fixed submission:
a,b,k = map(int, input().split())
Ans = []
for i in range(1, 101):
    if a%i== 0 and b%i ==0:
        Ans.append(i)

Ans.sort(reverse = True)
print(Ans[k-1])
Buggy python submission (verdict: Runtime Error):
n = int(input())
l = list(map(int, input().split()))

l.sort()

ans = 0
for i+1 in l:
	ans += l[i+1]
    
if l[0] < ans:
  print("Yes")
else:
  print("No")

Fixed submission:
N = int(input())
Ls = sorted(map(int, input().split()))
if Ls[-1] < sum(Ls) - Ls[-1]:
    print('Yes')
else:
    print('No')
Buggy python submission (verdict: Runtime Error):
print(int(input()//3))

Fixed submission:
print(int(input())//3)
Buggy python submission (verdict: Runtime Error):
a,b = input().strip().split()
if (a * b) % 2 == 0:
  print("Even") 
else if (a * b) % 2 != 0::
  print("Odd")


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

multi = a * b

if multi % 2 == 0:
    print("Even")
else:
    print("Odd")

Buggy python submission (verdict: Runtime Error):
a,b = input().strip().split()
if (a * b)%2 == 0:
  print("Even") 
else:
  print("Odd")


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

multi = a * b

if multi % 2 == 0:
    print("Even")
else:
    print("Odd")

Buggy python submission (verdict: Runtime Error):
a,b = input().strip().split()
if a % b == 0:
  print("Even") 
else:
  print("Odd")

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

multi = a * b

if multi % 2 == 0:
    print("Even")
else:
    print("Odd")

Buggy python submission (verdict: Runtime Error):
,b = input().strip().split()
if a % b == 0:
  print("Even") 
else:
  print("Odd")


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

multi = a * b

if multi % 2 == 0:
    print("Even")
else:
    print("Odd")

Buggy python submission (verdict: Runtime Error):
a,b = map(int, input().split())

multi = a * b

if multi % 2 == 0:
    print("Even")
else:
    pritn("Odd")
    

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

multi = a * b

if multi % 2 == 0:
    print("Even")
else:
    print("Odd")
Buggy python submission (verdict: Runtime Error):
s = input()
cnt = 0

for i in range(len(s)):
  if a[i] == '1':
    cnt+=1
    
 print(cnt)

Fixed submission:
N = input()
ans = 0

if N[0] == '1':
    ans += 1
if N[1] == '1':
    ans += 1
if N[2] == '1':
    ans += 1
print(ans)
Buggy python submission (verdict: Runtime Error):
N = int(input())
t0, a0 = 1, 1
for _ in range(N):
    t, a = map(int, input().split())
    n = max((t0- 1)// t+ 1, (a0-1)//a+1)
    t0, a0 = n*t, n*a

print(t0 + a0)

Fixed submission:
li = set(map(int, input().split()))
print(len(li))

Buggy python submission (verdict: Runtime Error):
n, k = map(int, input().split())
print(k * pow(k-1, n-1))

Fixed submission:
li = set(map(int, input().split()))
print(len(li))
Buggy python submission (verdict: Runtime Error):
import numpy as np
import math


N, K = list(map(int, input().split()))
tmp = list(map(int, input().split()))
lamps = np.array(tmp, dtype=np.int64)
# init = lamps
# for i in range(K):
#     act = np.zeros((N, N),dtype=np.int64)
#     for i in range(N):
#         # if init[i] == 0:
#         #     continue
#         # d = math.floor(init[i] + 0.5)
#         dmin = i - int(init[i])
#         dmax = i + int(init[i])
#         if dmin < 0:
#             dmin = 0
#         if dmax > N-1:
#             dmax = N-1
#         act[i][dmin:dmax+1] = 1
#         act[i][i] = 0
#     s = np.sum(act, axis=1)
#     init = s + np.ones(N, dtype=np.int64)
# result = init.astype("int64")
# ans = list(map(str,result.tolist()))
# print(" ".join(ans))
print("3 3 4 4 3")

Fixed submission:
name = str(input())
nickname = name[:3]

print(nickname)

Buggy python submission (verdict: Runtime Error):
import numpy as np
import math


N, K = list(map(int, input().split()))
tmp = list(map(int, input().split()))
tmp = input().split()
lamps = np.array(tmp, dtype=np.int64)
# init = lamps
# for i in range(K):
#     act = np.zeros((N, N),dtype=np.int64)
#     for i in range(N):
#         # if init[i] == 0:
#         #     continue
#         # d = math.floor(init[i] + 0.5)
#         dmin = i - int(init[i])
#         dmax = i + int(init[i])
#         if dmin < 0:
#             dmin = 0
#         if dmax > N-1:
#             dmax = N-1
#         act[i][dmin:dmax+1] = 1
#         act[i][i] = 0
#     s = np.sum(act, axis=0)
#     init = s + np.ones(N, dtype=np.int64)
# result = init.astype("int64")
# ans = list(map(str,result.tolist()))
# print(" ".join(ans))
print("3 3 4 4 3")

Fixed submission:
name = str(input())
nickname = name[:3]

print(nickname)

Buggy python submission (verdict: Runtime Error):
import numpy as np
import math


N, K = list(map(int, input().split()))
tmp = list(map(int, input().split()))
# tmp = input().split()
# lamps = np.array(tmp, dtype=np.int64)
# init = lamps
# for i in range(K):
#     act = np.zeros((N, N),dtype=np.int64)
#     for i in range(N):
#         # if init[i] == 0:
#         #     continue
#         # d = math.floor(init[i] + 0.5)
#         dmin = i - int(init[i])
#         dmax = i + int(init[i])
#         if dmin < 0:
#             dmin = 0
#         if dmax > N-1:
#             dmax = N-1
#         act[i][dmin:dmax+1] = 1
#         act[i][i] = 0
#     s = np.sum(act, axis=0)
#     init = s + np.ones(N, dtype=np.int64)
# result = init.astype("int64")
# ans = list(map(str,result.tolist()))
# print(" ".join(ans))
print("3 3 4 4 3")

Fixed submission:
name = str(input())
nickname = name[:3]

print(nickname)
Buggy python submission (verdict: Runtime Error):
N = int(input())
cards = sorted(list(map(int, input().split())), reverse=True)

A = 0
B = 0
idx = 0
for card in cards:
    if idx % 2 == 0:
        A += card
    else:
        B += card
    idx += 1


print(str(A-B))
~

Fixed submission:
N = int(input())
cards = sorted(list(map(int, input().split())), reverse=True)

A = 0
B = 0
idx = 0
for card in cards:
    if idx % 2 == 0:
        A += card
    else:
        B += card
    idx += 1
result = A - B
print(result)
Buggy python submission (verdict: Runtime Error):
N = input()
M = input()

sorted_asc = sorted(list(N))
sorted_desc = sorted(list(M), reverse=True)
res = ""

for (x, y) in zip(sorted_asc, sorted_desc):
    if x < y:
        res = "Yes"
        break
    elif x > y:
        res = "No"
        break

if res == "" and len(N) == len(M):
    res = "No"
elif res == "" and len(N) < len(M):
    res = "Yes"

print(res)

Fixed submission:
import math
a, b = list(map(int, input().split()))

x = math.ceil((a + b) / 2)
print(x)
Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())

paper = []
numbers = [int(input()) for _ in range(N)]

for n in numbers:
    if n in paper:
        paper.remove(n)
    else:
        paper.append(n)

print(len(paper))

Fixed submission:
N = int(input())

paper = []
numbers = sorted([int(input()) for _ in range(N)])

# for n in numbers:
for i in range(N - 1):
    if numbers[i] == numbers[i + 1]:
        numbers[i] = -1
        numbers[i + 1] = -1
    if numbers[i] != -1:
        paper.append(numbers[i])

if numbers[N - 1] != -1:
    paper.append(numbers[N - 1])
print(len(paper))
Buggy python submission (verdict: Runtime Error):
N = int(input())
# res = [x for x in range(1, N + 1)]
result = {}
# for i in res:
for i in range(1, N + 1):
    result[i] = 0
    tmp = i
    while True:
        if tmp % 2 == 0:
            tmp = tmp / 2
            result[i] += 1
        else:
            break
print(sorted(result.items(), key=lambda x: -x[1])[0][0]

Fixed submission:
N = int(input())
res = [x for x in range(1, N + 1)]
result = {}
for i in res:
    result[i] = 0
    tmp = i
    while True:
        if tmp % 2 == 0:
            tmp = tmp / 2
            result[i] += 1
        else:
            break
print(sorted(result.items(), key=lambda x: -x[1])[0][0])

Buggy python submission (verdict: Runtime Error):
N = int(input())
res = [x for x in range(1, N + 1)]
result = {}
i = 0
for i in res:
    result[i] = 0
    tmp = i
    while True:
        if tmp % 2 == 0:
            tmp = tmp / 2
            result[i] += 1
        else:
            break
print(sorted(result.items(), key=lambda x: -x[1])[0][0]

Fixed submission:
N = int(input())
res = [x for x in range(1, N + 1)]
result = {}
for i in res:
    result[i] = 0
    tmp = i
    while True:
        if tmp % 2 == 0:
            tmp = tmp / 2
            result[i] += 1
        else:
            break
print(sorted(result.items(), key=lambda x: -x[1])[0][0])
Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())

numbers = list(map(int, input().split()))
counter = 0

for i in range(len(numbers) - 1):
    sum_i_n = sum(numbers[:i + 1])
    sum_i_n_1 = sum(numbers[:i + 2])

    if sum_i_n == 0:
        numbers[i] += 1
        counter += 1
    if sum_i_n * sum_i_n_1 > 0:
        if sum_i_n_1 > 0:
            numbers[i + 1] -= (sum_i_n_1 + 1)
            counter += sum_i_n_1 + 1
        else:
            numbers[i + 1] += (abs(sum_i_n_1) + 1)
            counter += abs(sum_i_n_1) + 1
if sum(numbers) == 0:
    counter += 1

print(counter)

Fixed submission:
import copy
n = int(input())

numbers = list(map(int, input().split()))
numbers1 = copy.copy(numbers)
counter = 0
counter2 = 0
sum_in = 0
sum_in1 = 0

for i in range(len(numbers)):
    sum_in += numbers[i]
    if i % 2 == 0:
        if sum_in <= 0:
            sub = abs(sum_in) + 1
            sum_in += sub
            numbers[i] += sub
            counter += sub
    else:
        if sum_in >= 0:
            sub = abs(sum_in) + 1
            sum_in -= sub
            numbers[i] -= sub
            counter += sub

for i in range(len(numbers1)):
    sum_in1 += numbers1[i]

    if i % 2 != 0:
        if sum_in1 <= 0:
            sub = abs(sum_in1) + 1
            sum_in1 += sub
            numbers1[i] += sub
            counter2 += sub
    else:
        if sum_in1 >= 0:
            sub = abs(sum_in1) + 1
            sum_in1 -= sub
            numbers1[i] -= sub
            counter2 += sub

print(min([counter2, counter]))
Buggy python submission (verdict: Time Limit Exceeded):
N, C, K = list(map(int, input().split()))

passengers = sorted([int(input()) for i in range(N)])
res = {}

for p in passengers:
    key = False
    for k in res.keys():
        if k <= p and p <= k + K and res[k] <= C - 1:
            res[k] += 1
            key = True
            break
    if not key:
        res[p] = 1
print(len(res))


Fixed submission:
N, C, K = list(map(int, input().split()))

passengers = sorted([int(input()) for i in range(N)])
res = 0
bus_time = passengers[0]
bus_count = C
for p in passengers:
    if bus_count == 0 or p - bus_time > K:
        res += 1
        bus_time = p
        bus_count = C - 1
    else:
        bus_count -= 1
if bus_count != C:
    res += 1
print(res)

Buggy python submission (verdict: Time Limit Exceeded):
N, C, K = list(map(int, input().split()))

passengers = sorted([int(input()) for i in range(N)])
res = {}
key = False
for p in passengers:
    #    if len(res):
    #        res[p] = 1
    for k, val in res.items():
        if k <= p and p <= k + K and val <= C - 1:
            res[k] += 1
            key = True
            break
    if not key:
        res[p] = 1
    else:
        key = False
print(len(res))

Fixed submission:
N, C, K = list(map(int, input().split()))

passengers = sorted([int(input()) for i in range(N)])
res = 0
bus_time = passengers[0]
bus_count = C
for p in passengers:
    if bus_count == 0 or p - bus_time > K:
        res += 1
        bus_time = p
        bus_count = C - 1
    else:
        bus_count -= 1
if bus_count != C:
    res += 1
print(res)
Buggy python submission (verdict: Runtime Error):
N = int(input())
numbers = list(map(int, input().split()))

odds = list(filter(lambda x: x % 2 == 0, numbers))
evens = list(filter(lambda x: x % 2 == 1, numbers))

evens_from_odds = sum(divmod(odds, 2))
odds_from_evens = sum(divmod(evens, 2))

if odds_from_evens % 2 == 1 or evens_from_odds % 2 == 1:
    print("YES")
else:
    print("NO")

Fixed submission:
N = int(input())
numbers = list(map(int, input().split()))

odds = list(filter(lambda x: x % 2 == 0, numbers))
evens = list(filter(lambda x: x % 2 == 1, numbers))

# evens_from_odds = sum(divmod(len(odds), 2))
# odds_from_evens = sum(divmod(len(evens), 2))
odds_from_evens = int(len(evens) / 2)
evens_mod = len(evens) % 2
if evens_mod == 1:
    print("NO")
else:
    print("YES")
Buggy python submission (verdict: Time Limit Exceeded):
K, S = list(map(int, input().split()))
res = 0

for x in range(K + 1):
    tmp = S
    if tmp - x == 0:
        res += 1
        continue
    for y in range(K + 1):
        if tmp - x - y == 0:
            res += 1
            continue
        for z in range(K + 1):
            if tmp - x - y - z == 0:
                res += 1
                continue
print(res)


Fixed submission:
K, S = list(map(int, input().split()))
res = 0

for x in range(K + 1):
    for y in range(K + 1):
        if S - x - y >= 0 and S - x - y <= K:
            res += 1
print(res)

Buggy python submission (verdict: Time Limit Exceeded):
K, S = list(map(int, input().split()))
res = 0

for x in range(K + 1):
    for y in range(K + 1):
        for z in range(K + 1):
            if x + y + z == S:
                res += 1
print(res)

Fixed submission:
K, S = list(map(int, input().split()))
res = 0

for x in range(K + 1):
    for y in range(K + 1):
        if S - x - y >= 0 and S - x - y <= K:
            res += 1
print(res)
Buggy python submission (verdict: Runtime Error):
W,H,N = list(map(int,input().split()))

points = [list(map(int, input().split())) for _ in range(N)]
# res = [[0 for _ in range(W)] for _ in range(H)]
res = 0

minx, maxx, miny, maxy = [0,W,0,H]
x = 0
y = 0

for x,y,a in points:
    if a == 1:
        minx = x
    if a == 2:
        maxx = x
    if a == 3:
        miny = y
    if a == 4:
        maxy = y


if maxx - minx <= 0 or maxy - miny <=0:
    res = 0
else:
    res = (maxx-minx) * (maxy - miny)

print(res)
~                    

Fixed submission:
W,H,N = list(map(int,input().split()))

points = [list(map(int, input().split())) for _ in range(N)]
res = 0

x1,y1 = [0,0]
x2,y2 = [W,H]

for x,y,a in points:
    if a == 1:
        x1 = max(x1, x)
    if a == 2:
        x2 = min(x2, x)
    if a == 3:
        y1 = max(y1, y)
    if a == 4:
        y2 = min(y2, y)

if x2-x1 <= 0 or y2-y1 <=0:
    print("0")
else:
    print((x2-x1)*(y2-y1))
Buggy python submission (verdict: Runtime Error):
N, x = list(map(int, input().split()))
li = sorted(list(map(int, input().split())))
res = 0
for i  in li:
    x -= i
    if x < 0:
        break
    else:
        res += 1
if x > 0:
    res -= 1

print(res)



Fixed submission:
N, L = map(int, input().split())
lix = sorted(input() for i in range(N))

res = "".join(lix)
print(res)

Buggy python submission (verdict: Runtime Error):
N, x = list(map(int, input().split()))
li = sorted(list(map(int, input().split())))
print(li)
res = 0
for i  in li:
    x -= i
    if x < 0:
        break
    else:
        res += 1
if x > 0:
    res -= 1
print(res)

Fixed submission:
N, L = map(int, input().split())
lix = sorted(input() for i in range(N))

res = "".join(lix)
print(res)

Buggy python submission (verdict: Runtime Error):
N, L = map(int, input().split())
lix = sorted(input() for i in range(L))

res = "".join(lix)
print(res)

Fixed submission:
N, L = map(int, input().split())
lix = sorted(input() for i in range(N))

res = "".join(lix)
print(res)

Buggy python submission (verdict: Runtime Error):
N, L = map(int, input().split())
lix = sorted(input() for i in range(L))

print("".join(lix))

Fixed submission:
N, L = map(int, input().split())
lix = sorted(input() for i in range(N))

res = "".join(lix)
print(res)
Buggy python submission (verdict: Runtime Error):
data_a = [ABCDEFGHIJKLMNOPQRSTUVWXYZ]
data_b = [abcdefghijklmnopqrstuvwxyz]

n = input()

if n in data_a:
  print('A')

else:
  print('a')

Fixed submission:
data_a = ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z']

n = input()

if n in data_a:
  print('A')

else:
  print('a')