Harryxun/testdata huggingface dataset:
Buggy python submission (verdict: Runtime Error):
n, k = map(int, input().split())
a = list(map(int, input().split()))

pos, neg = [], []
zero_count = 0

for x in a:
	if x > 0:
		pos.append(x)
	elif x < 0:
		neg.append(x)
	else:
		zero_count += 1

# max_v = pos[0]
# min_v = neg[0]

# max_p_idx = 1
# max_n_idx = 0
# min_p_idx = 0
# min_n_idx = 1

# for kk in range(1, min(k, len(pos) + len(neg))):
# 	if max_p_idx < len(pos):
# 		max_v 


MOD = 10**9 + 7

if len(pos) >= k:
	pos_res = pos[:k]
	idx = 0
	while idx + 1 < len(neg) and pos_res[k - idx - 1] * pos_res[k - idx - 2] < neg[idx] * neg[idx + 1]:
		idx += 2

	result = 1
	for i in range(idx):
		result = result * neg[i] % MOD

	for i in range(k - idx):
		result = result * pos[i] % MOD

	print(result)

else:
	left = k - len(pos)
	if left > len(neg):
		print(0) 
	else:
		if left % 2 == 0:
			idx = left
			while idx + 1 < len(neg) and pos_res[k - idx - 1] * pos_res[k - idx - 2] < neg[idx] * neg[idx + 1]:
				idx += 2

			result = 1
			for i in range(idx):
				result = result * neg[i] % MOD

			for i in range(k - idx):
				result = result * pos[i] % MOD

			print(result)
		else:
			if zero_count > 0:
				print(0)
			else:
				b = sorted(map(abs, a))
				result = 1
				for i in range(k):
					result = result * b[i] % MOD
				print(result)	

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

pos, neg = [], []
zero_count = 0

for x in a:
	if x > 0:
		pos.append(x)
	elif x < 0:
		neg.append(x)
	else:
		zero_count += 1

# max_v = pos[0]
# min_v = neg[0]

# max_p_idx = 1
# max_n_idx = 0
# min_p_idx = 0
# min_n_idx = 1

# for kk in range(1, min(k, len(pos) + len(neg))):
# 	if max_p_idx < len(pos):
# 		max_v 


MOD = 10**9 + 7

neg = list(sorted(neg))
pos = list(reversed(sorted(pos)))

if len(pos) >= k:
	#print('case 1')
	pos_res = pos[:k]
	idx = 0
	while idx + 1 < len(neg) and pos_res[k - idx - 1] * pos_res[k - idx - 2] < neg[idx] * neg[idx + 1]:
		idx += 2

	result = 1
	for i in range(idx):
		result = result * neg[i] % MOD

	for i in range(k - idx):
		result = result * pos[i] % MOD

	print(result)

else:
	#print('case 2')
	left = k - len(pos)	
	if left % 2 == 1:
		if len(pos) > 0:
			left += 1
		else:
			left = 1000000000
	if left > len(neg):
		#print('case 3')
		b = list(sorted(map(abs, a)))
		result = 1
		for i in range(k):
			result = result * b[i] % MOD
		print(-result % MOD)
	else:
		#print("left = ", left)
		idx = left
		pos_shift = 0
		while idx + 1 < len(neg) and pos_shift + 1 < len(pos) and pos[len(pos) - pos_shift - 1] * pos[len(pos) - pos_shift - 2] < neg[idx] * neg[idx + 1]:
			idx += 2
			pos_shift += 2

		result = 1
		for i in range(idx):
			result = result * neg[i] % MOD

		for i in range(k - idx):
			result = result * pos[i] % MOD

		print(result)
Buggy python submission (verdict: Runtime Error):
h, w, k = map(int, input().split())

a = [[0 for i in range(w)] for j in range(h)]

for i in range(h):
    s = input()
    for j in range(w):
        a[i][j] = int(s[j])

best_result = h * w + 1000

for m in range(2 ** (h - 1)):
    mask = m
    num_splits = 0
    splits = []
    i = 0
    while mask > 0:
        if (mask % 2) == 1:
            num_splits += 1
            splits.append(i)
        i += 1
        mask = mask // 2

    #print('mask = ', m, 'splits = ', splits, 'num_splits =', num_splits)

    counts = [0 for j in range(num_splits + 1)]
    current_counts = [0 for j in range(num_splits + 1)]
    result = num_splits

    for j in range(w):
        if result >= best_result:
            break
        split_index = 0
        success = True
        current_counts[0] = 0

        for i in range(h):
            if a[i][j] == 1:
                counts[split_index] += 1
                if counts[split_index] > k:
                    success = False

            current_counts[split_index] += a[i][j]

            if split_index < num_splits and i == splits[split_index]:
                split_index += 1
                current_counts[split_index] = 0

        if not success:
            result += 1
            #print('not success j = ', j, 'result = ', result, 'counts = ', counts)
            for x in range(num_splits + 1):
                counts[x] = current_counts[x]
            

    best_result = min(best_result, result)

print(best_result)

Fixed submission:
a, b = map(int, input().split())
print ((a*(a - 1) + b*(b - 1)) // 2)
Buggy python submission (verdict: Runtime Error):
def f(n):
  if n <= 1:
    return 1
  return f(n-1)*n
 
def h(n,m):
  return f(n+m-1)//f(n)//f(m-1)
 
s=int(input())
 
res = 0
 
pair = s//3
 
for i in range(1,pair+1):
  res += h(s-3*i,i)
print(res%(10**9+7))

Fixed submission:
def f(n):
  res = 1
  if n <= 1:
    return 1
  while n>1:
    res *= n
    n-=1
  return res
 
def h(n,m):
  return f(n+m-1)//f(n)//f(m-1)
 
s=int(input())
 
res = 0
 
pair = s//3
 
for i in range(1,pair+1):
  res += h(s-3*i,i)
print(res%(10**9+7))

Buggy python submission (verdict: Runtime Error):
def f(n):
  if n <= 1:
    return 1
  return f(n-1)*n

def h(n,m):
  return f(n+m-1)/f(n)/f(m-1)

s=int(input())

res = 0

pair = s//3

for i in range(1,pair+1):
  res += h(s-3*i,i)
print(res)
  

Fixed submission:
def f(n):
  res = 1
  if n <= 1:
    return 1
  while n>1:
    res *= n
    n-=1
  return res
 
def h(n,m):
  return f(n+m-1)//f(n)//f(m-1)
 
s=int(input())
 
res = 0
 
pair = s//3
 
for i in range(1,pair+1):
  res += h(s-3*i,i)
print(res%(10**9+7))
Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
xy = []
for _ in range(n):
    xy.append(list(map(int,input().split())))
max = 0
for xy1 in xy:
  for xy2 in xy:
    dis = abs(xy1[0]-xy2[0]) + abs(xy1[1]-xy2[1])
    if dis > max:
      max = dis
print(max)

Fixed submission:
n = int(input())
xy = []
for _ in range(n):
    xy.append(list(map(int,input().split())))
a,b=xy[0]
m1=a+b
p1=xy[0]
m2=a-b
p2=xy[0]
p3=xy[0]
p4=xy[0]
m3=-a-b
m4=-a+b

for x,y in xy:
    if x+y > m1:
        m1=x+y
        p1 = [x,y]
    if x-y > m2:
        m2=x-y
        p2 = [x,y]
    if -x-y > m3:
        m3 = -x-y
        p3 = [x,y]
    if -x+y > m4:
        m4 = -x+y
        p4 = [x,y]
m = 0
for x0,y0 in [p1,p2,p3,p4]:
    for x1,y1 in [p1,p2,p3,p4]:
        dis=abs(x0-x1) + abs(y0-y1)
        if dis > m:
            m = dis
print(m)

Buggy python submission (verdict: Runtime Error):
n = int(input())
xy = [list(map(int,input())) for _ in range(n)]
max = 0
for xy1 in xy:
  for xy2 in xy:
    dis = abs(xy1[0]-xy2[0]) + abs(xy1[1]-xy2[1])
    if dis > max:
      max = dis
print(max)

Fixed submission:
n = int(input())
xy = []
for _ in range(n):
    xy.append(list(map(int,input().split())))
a,b=xy[0]
m1=a+b
p1=xy[0]
m2=a-b
p2=xy[0]
p3=xy[0]
p4=xy[0]
m3=-a-b
m4=-a+b

for x,y in xy:
    if x+y > m1:
        m1=x+y
        p1 = [x,y]
    if x-y > m2:
        m2=x-y
        p2 = [x,y]
    if -x-y > m3:
        m3 = -x-y
        p3 = [x,y]
    if -x+y > m4:
        m4 = -x+y
        p4 = [x,y]
m = 0
for x0,y0 in [p1,p2,p3,p4]:
    for x1,y1 in [p1,p2,p3,p4]:
        dis=abs(x0-x1) + abs(y0-y1)
        if dis > m:
            m = dis
print(m)
Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
a = list(map(int,input().split()))
ans = 0
for i in range(n-1):
  for j in range(n-i-1):
    ans = (ans + a[i]*a[i+j+1]) % (10**9 + 7)
print(ans)

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

s = sum(a)
t = sum(map(lambda x:x**2,a))
ans = ((s**2 - t)//2) % (10**9 + 7)
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
k = int(input())
n = 7
ans = 1
for _ in range(1000000):
  if n % k == 0:
    print(ans)
    exit()
  else:
    n = 10*n + 7
    ans += 1
print('-1')

Fixed submission:
k = int(input())
mod = 7
ans = 1
for i in range(k):
  if mod % k == 0:
    print(ans)
    exit()
  else:
    mod = (mod*10 + 7) % k
    ans += 1
print('-1')
Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
a = list(map(int,input().split()))
ans = 1
for i in range(n):
  ans *= a[i]
if ans <= 10**18:
  print(ans)
else:
  print(-1)

Fixed submission:
n = int(input())
a = list(map(int,input().split()))
if 0 in a:
  print(0)
  exit()
ans = 1
for i in range(n):
  ans *= a[i]
  if ans > 10**18:
    print(-1)
    exit()
print(ans)
Buggy python submission (verdict: Runtime Error):
a, b = input().split()
a = int(a)
b.replace('.','')
b = int(b)
print(a*b//100)

Fixed submission:
a, b = input().split()
a = int(a)
b = int(b.replace('.',''))
print(a*b//100)
Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
s = input()
ans = 0

for i in range(1000): #0~999を全探索
  flg1 = False #1桁目があるか
  flg2 = False #2桁目があるか
  flg3 = False #3桁目があるか
  one = str(i//100) #1桁目
  two = str(i%100//10) #2桁目
  three = str(i%10) #3桁目
  t = 0
  
  for j in range(n-2):
    if s[j] == one:
      flg1 = True
      t = j+1
      break
  for j in range(t,n-1):
    if s[j] == two:
      flg2 = True
      t = j+1
      break
  for j in range(t,n):
    if s[j] == three:
      flg3 = True
      t = j+1
      break
  if flg1 and flg2 and flg3:
    ans += 1
print(ans)

Fixed submission:
n = int(input())
s = input()
ans = 0

for i in range(1000): #0~999を全探索
  flg1 = False #1桁目があるか
  flg2 = False #2桁目があるか
  flg3 = False #3桁目があるか
  one = str(i//100) #1桁目
  two = str(i%100//10) #2桁目
  three = str(i%10) #3桁目
  t = 0
  
  for j in range(n-2):
    if s[j] == one:
      flg1 = True
      t = j+1
      break
  for j in range(t,n-1):
    if s[j] == two:
      flg2 = True
      t = j+1
      break
  for j in range(t,n):
    if s[j] == three:
      flg3 = True
      t = j+1
      break
  if flg1 and flg2 and flg3:
    ans += 1
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
s = input()
pin = []
for i in range(n-2):
  for j in range(i+1,n-1):
    for k in range(j+1,n):
      pin.append(s[i]+s[j]+s[k])
pin = list(set(pin))
print(len(pin))

Fixed submission:
n = int(input())
s = input()
ans = 0

for i in range(1000): #0~999を全探索
  flg1 = False #1桁目があるか
  flg2 = False #2桁目があるか
  flg3 = False #3桁目があるか
  one = str(i//100) #1桁目
  two = str(i%100//10) #2桁目
  three = str(i%10) #3桁目
  t = 0
  
  for j in range(n-2):
    if s[j] == one:
      flg1 = True
      t = j+1
      break
  for j in range(t,n-1):
    if s[j] == two:
      flg2 = True
      t = j+1
      break
  for j in range(t,n):
    if s[j] == three:
      flg3 = True
      t = j+1
      break
  if flg1 and flg2 and flg3:
    ans += 1
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
nk = input()
nk = nk.split()
n = int(nk[0])
k = int(nk[1])
 
s = input()
 
count = 0
now = None
clist = []
 
for ss in s:
    if now is None:
        if ss == '0':
            clist.append(0)
 
    if now is None or now == ss:
        count += 1
    else:
        clist.append(count)
        count = 1
    now = ss
 
clist.append(count)
 
max_len = k * 2 + 1
max_sum = 0
 
 
for i in range(0, len(clist)):
    if i % 2 == 1:
        continue
    j = i + max_len
    try:
        max_sum = max(max_sum, sum(clist[i:j]))
    except:
        pass
 
print(max_sum)

Fixed submission:
nk = input()
nk = nk.split()
n = int(nk[0])
k = int(nk[1])

s = input()

count = 0
now = None
clist = []

for ss in s:
    if now is None:
        if ss == '0':
            clist.append(0)

    if now is None or now == ss:
        count += 1
    else:
        clist.append(count)
        count = 1
    now = ss

clist.append(count)

max_len = k * 2 + 1
max_sum = 0
clist_len = len(clist)
now_sum = None

for i in range(0, clist_len):
    if i % 2 == 1:
        continue
    j = i + max_len

    if now_sum is None:
        now_sum = sum(clist[i:j])
        max_sum = now_sum
    else:
        now_sum -= sum(clist[(i-2):i])
        now_sum += sum(clist[(j-2):(j)])
        max_sum = max(max_sum, now_sum)

print(max_sum)

Buggy python submission (verdict: Time Limit Exceeded):
nk = input()
nk = nk.split()
n = int(nk[0])
k = int(nk[1])

s = input()

count = 0
now = None
clist = []

for ss in s:
    if now is None:
        if ss == '0':
            clist.append(0)

    if now is None or now == ss:
        count += 1
    else:
        clist.append(count)
        count = 1
    now = ss

clist.append(count)

max_len = k * 2 + 1
max_sum = 0


for i in range(0, len(clist)):
    if i % 2 == 1:
        continue
    j = i + max_len
    try:
        max_sum = max(max_sum, sum(clist[i:j]))
    except:
        pass

print(max_sum)


Fixed submission:
nk = input()
nk = nk.split()
n = int(nk[0])
k = int(nk[1])

s = input()

count = 0
now = None
clist = []

for ss in s:
    if now is None:
        if ss == '0':
            clist.append(0)

    if now is None or now == ss:
        count += 1
    else:
        clist.append(count)
        count = 1
    now = ss

clist.append(count)

max_len = k * 2 + 1
max_sum = 0
clist_len = len(clist)
now_sum = None

for i in range(0, clist_len):
    if i % 2 == 1:
        continue
    j = i + max_len

    if now_sum is None:
        now_sum = sum(clist[i:j])
        max_sum = now_sum
    else:
        now_sum -= sum(clist[(i-2):i])
        now_sum += sum(clist[(j-2):(j)])
        max_sum = max(max_sum, now_sum)

print(max_sum)
Buggy python submission (verdict: Time Limit Exceeded):
###############################################################################

from bisect import bisect_left as binl

def intin():
    input_tuple = input().split()
    if len(input_tuple) <= 1:
        return int(input_tuple[0])
    return tuple(map(int, input_tuple))


def intina():
    return [int(i) for i in input().split()]


def intinl(count):
    return [intin() for _ in range(count)]


def modadd(x, y):
    global mod
    return (x + y) % mod


def modmlt(x, y):
    global mod
    return (x * sy) % mod


def lcm(x, y):
    while y != 0:
        z = x % y
        x = y
        y = z
    return x


###############################################################################


def main():
    x, y, z, k = intin()
    alist = intina()
    blist = intina()
    clist = intina()

    ablist = []
    for a in alist:
        for b in blist:
            ablist.append(a + b)

    ablist.sort(reverse=True)

    abclist = []
    for ab in ablist[:(k+1)]:
        for c in clist:
            abclist.append(ab + c)

    abclist.sort(reverse=True)

    for i in range(k):
        print(abclist[i])


if __name__ == '__main__':
    main()


Fixed submission:
###############################################################################

from bisect import bisect_left as binl

def intin():
    input_tuple = input().split()
    if len(input_tuple) <= 1:
        return int(input_tuple[0])
    return tuple(map(int, input_tuple))


def intina():
    return [int(i) for i in input().split()]


def intinl(count):
    return [intin() for _ in range(count)]


def modadd(x, y):
    global mod
    return (x + y) % mod


def modmlt(x, y):
    global mod
    return (x * sy) % mod


def lcm(x, y):
    while y != 0:
        z = x % y
        x = y
        y = z
    return x


###############################################################################


def main():
    x, y, z, k = intin()
    alist = intina()
    blist = intina()
    clist = intina()

    ablist = []
    for a in alist:
        for b in blist:
            ablist.append(a + b)

    ablist.sort(reverse=True)

    abclist = []
    for ab in ablist[:(k+1)]:
        for c in clist:
            abclist.append(ab + c)

    abclist.sort(reverse=True)

    for i in range(k):
        print(abclist[i])


if __name__ == '__main__':
    main()
Buggy python submission (verdict: Runtime Error):
import sys

np = input().split()
n = int(np[0])
p = int(np[1])
bound_p = int(p ** (1 / min(n, 10)))


ilist = list(range(1, bound_p + 1))
ilist.reverse()


for i in ilist:
    pp = p
    for j in range(n):
        if pp % i != 0:
            break
        pp = pp // i
    else:
        print(i)
        sys.exit(0)


print(1)


Fixed submission:
import sys

np = input().split()
n = int(np[0])
p = int(np[1])
bound_p = int(p ** (1 / min(n, 4)))


if n == 1:
    print(p)
    sys.exit(0)


ilist = list(range(2, bound_p + 1))
ilist.reverse()


for i in ilist:
    pp = p
    for j in range(n):
        if pp % i != 0:
            break
        pp = pp // i
    else:
        print(i)
        sys.exit(0)


print(1)

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

np = input().split()
n = int(np[0])
p = int(np[1])
bound_p = int(p ** (1 / n))


ilist = list(range(1, bound_p + 1))
ilist.reverse()


for i in ilist:
    if p % (i**n) == 0:
        print(i)
        sys.exit(0)

print(1)


Fixed submission:
import sys

np = input().split()
n = int(np[0])
p = int(np[1])
bound_p = int(p ** (1 / min(n, 4)))


if n == 1:
    print(p)
    sys.exit(0)


ilist = list(range(2, bound_p + 1))
ilist.reverse()


for i in ilist:
    pp = p
    for j in range(n):
        if pp % i != 0:
            break
        pp = pp // i
    else:
        print(i)
        sys.exit(0)


print(1)
Buggy python submission (verdict: Runtime Error):
n = int(input())
a = ["ACL"]*n
print('',join(a))

Fixed submission:
n = int(input())
a = ["ACL"]*n
print(''.join(a))

Buggy python submission (verdict: Runtime Error):
n = int(input())
ptint('ACL'*n)

Fixed submission:
n = int(input())
print('ACL'*n)
Buggy python submission (verdict: Time Limit Exceeded):
import itertools
n = int(input())
a = list(map(int,input().split()))
cnt = 0
for i,j in itertools.combinations(a,2):
    cnt += i*j
print(cnt % (10**9 + 7))

Fixed submission:
import itertools
n = int(input())
a = list(map(int,input().split()))
ruisekiwa = [0] * n
cnt = 0
ruisekiwa[0] = a[0]
for i in range(1,n):
    ruisekiwa[i] = ruisekiwa[i-1] + a[i]
for i in range(n):
    cnt += a[i] * (ruisekiwa[-1] - ruisekiwa[i])
print(cnt % (10**9 + 7))
Buggy python submission (verdict: Time Limit Exceeded):
x,y = map(int,input().split())
for i in range(2**x):
    li = []
    cnt = 0
    for j in range(x):
        if ((i>>j) & 1):
            li.append(1)
        else:
            li.append(0)
    for k in range(x):
        if li[k] == 1:
            cnt += 2
        else:
            cnt += 4
    if cnt == y:
        print("Yes")
        exit()
print("No")

Fixed submission:
x,y = map(int,input().split())
for i in range(x+1):
    if (i*2 + (x-i) * 4) == y:
        print("Yes")
        exit()
print("No")
Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
a = list(map(int,input().split()))
cnt = 1
for i in range(n):
    cnt *= a[i]

if cnt > 10**18:
    print(-1)
else:
    print(cnt)

Fixed submission:
n = int(input())
a = list(map(int,input().split()))
a.sort()
cnt = 1
for i in a:
    cnt *= i
    if cnt > 10**18:
        print(-1)
        exit()
print(cnt)
Buggy python submission (verdict: Time Limit Exceeded):
import fractions
k = int(input())
cnt = 0
for i in range(1,k+1):
    for j in range(1,k+1):
        tmp = fractions.gcd(i,j)
        for m in range(1,k+1):
            cnt += fractions.gcd(m,tmp)
print(cnt)



Fixed submission:
from math import gcd
k = int(input())
cnt = 0
for i in range(1,k+1):
    for j in range(1,k+1):
        tmp = gcd(i,j)
        for m in range(1,k+1):
            cnt += gcd(m,tmp)
print(cnt)

Buggy python submission (verdict: Time Limit Exceeded):
import fractions
k = int(input())
cnt = 0
lists = []
for i in range(1,k+1):
    for j in range(1,k+1):
        lists.append(fractions.gcd(i,j))

for i in lists:
    for j in range(1,k+1):
        cnt += fractions.gcd(i,j)
print(cnt)


Fixed submission:
from math import gcd
k = int(input())
cnt = 0
for i in range(1,k+1):
    for j in range(1,k+1):
        tmp = gcd(i,j)
        for m in range(1,k+1):
            cnt += gcd(m,tmp)
print(cnt)

Buggy python submission (verdict: Time Limit Exceeded):
import fractions
k = int(input())
cnt = 0
for i in range(1,k+1):
    for j in range(1,k+1):
        for m in range(1,k+1):
            cnt += fractions.gcd(i,fractions.gcd(j,m))
print(cnt)

Fixed submission:
from math import gcd
k = int(input())
cnt = 0
for i in range(1,k+1):
    for j in range(1,k+1):
        tmp = gcd(i,j)
        for m in range(1,k+1):
            cnt += gcd(m,tmp)
print(cnt)
Buggy python submission (verdict: Runtime Error):
S = input()
T = input()
lis = []
count = 0 
saishou = 0

for i in range(len(T)):
  for j in range(i, len(S)-len(T)+i):
    c = 0
    while  i + c < len(T) and j + c < len(S) :
      if T[i+c] == S[j+c]:
        c = c + 1
        lis.append(c)
      else:
        break
        

saidai = max(lis)
saishou = len(T) - saidai

print(saishou)

Fixed submission:
S = input()
T = input()
ans = len(T)

for i in range(len(S)-len(T)+1):
  c = 0
  for j in range(len(T)):
    if T[j] != S[i+j] :
      c = c + 1
  ans = min(ans, c)

print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = list(map(int, input().split()))
S = 0
lis = 0
for i in range(N-1):
  lis = 0
  for j in range(i+1, N):
   lis = lis + A[j]
  S = S + A[i] * lis

S = S % (10**9 + 7)
print(S)


Fixed submission:
N = int(input())
A = list(map(int, input().split()))
S = 0
ans = 0
for k in range(N):
  S = S + A[k]

for i in range(N-1):
  S = S - A[i]
  ans = ans + S * A[i]

ans = ans % (10**9 + 7)
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = list(map(int, input().split()))
S = 0
for i in range(N-1):
  for j in range(i+1, N):
    S = S + (A[i] * A[j]) % (10**9 + 7)
S = S % (10**9 + 7)
print(S)

Fixed submission:
N = int(input())
A = list(map(int, input().split()))
S = 0
ans = 0
for k in range(N):
  S = S + A[k]

for i in range(N-1):
  S = S - A[i]
  ans = ans + S * A[i]

ans = ans % (10**9 + 7)
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = list(map(int, input().split()))
S = 0
for i in range(N-1):
  for j in range(i+1, N):
    S = S + A[i] * A[j]
S = S % (10**9+7)
print(S)


Fixed submission:
N = int(input())
A = list(map(int, input().split()))
S = 0
ans = 0
for k in range(N):
  S = S + A[k]

for i in range(N-1):
  S = S - A[i]
  ans = ans + S * A[i]

ans = ans % (10**9 + 7)
print(ans)
Buggy python submission (verdict: Runtime Error):
N = input()
if(N[1] == 2, 4, 5, 7, 9):
    print('hon')
elif(N[1] == 0, 1, 6, 8):
    print('pon')
elif(N[1] == 3):
    print('bon')

Fixed submission:
N = list(input())
l = len(N)
if N[l-1] == '2' or N[l-1] == '4' or N[l-1] == '5' or N[l-1] == '7' or N[l-1] == '9':
    print('hon')
elif N[l-1] == '0' or N[l-1] == '1' or N[l-1] == '6' or N[l-1] == '8':
    print('pon')
elif N[l-1] == '3':
    print('bon')
Buggy python submission (verdict: Runtime Error):
S, K = input().split()
K = int(K)
if len(S) > K:
    S_dash = S[0:K]
    S_dash += '...'
    print(S_dash)
else:
    print(S)

Fixed submission:
K = int(input())
S = str(input())
if len(S) > K:
    S_dash = S[0:K]
    S_dash += '...'
    print(S_dash)
else:
    print(S)