Harryxun/testdata huggingface dataset:
Buggy python submission (verdict: Runtime Error):
from functools import reduce
from operator import xor

R = lambda: map(int, input().split())
 
n = int(input())
if n % 3:
    ans = 'YNeos'[any(R())::2]
else:
    a = sorted(R())
    m = n // 3
    if reduce(a[::m], xor):
        ans = 'No'
    elif any(len(set(a[i:i + m])) > 1 for i in range(0, n, m)):
        ans = 'No'
    else:
        ans = 'Yes'
print(ans)

Fixed submission:
R = lambda: map(int, input().split())

n = int(input())
if n % 3:
    ans = 'YNeos'[any(R())::2]
else:
    a = sorted(map(int, input().split()))
    m = n // 3
    if a[0] ^ a[m] ^ a[2 * m]:
        ans = 'No'
    elif any(len(set(a[i:i + m])) > 1 for i in range(0, n, m)):
        ans = 'No'
    else:
        ans = 'Yes'
print(ans)

Buggy python submission (verdict: Runtime Error):
n = int(input())
if n % 3:
    ans = 'No'
else:
    a = sorted(map(int, input().split()))
    m = n // 3
    if a[0] ^ a[m] ^ a[2 * m]:
        ans = 'No'
    elif any(x != y for i, x, y in enumerate(zip(a, a[1:]), 1) if i % m):
        ans = 'No'
    else:
        ans = 'Yes'
print(ans)


Fixed submission:
R = lambda: map(int, input().split())

n = int(input())
if n % 3:
    ans = 'YNeos'[any(R())::2]
else:
    a = sorted(map(int, input().split()))
    m = n // 3
    if a[0] ^ a[m] ^ a[2 * m]:
        ans = 'No'
    elif any(len(set(a[i:i + m])) > 1 for i in range(0, n, m)):
        ans = 'No'
    else:
        ans = 'Yes'
print(ans)
Buggy python submission (verdict: Runtime Error):
l, r = map(int, input().split())
if  r - l >= 672:
    print(0)
else:
    print(min(i * j % 2019 for i in range(l, r + 1) for j in range(l, ir)))

Fixed submission:
l, r = map(int, input().split())
if r // 3 > (l - 1) // 3 and r // 673 > (l - 1) // 673:
    print(0)
else:
    print(min(i * j % 2019 for i in range(l, r + 1) for j in range(l, i)))

Buggy python submission (verdict: Time Limit Exceeded):
l, r = map(int, input().split())
if l - r >= 672:
    print(0)
else:
    print(min(i * j % 2019 for i in range(l, r + 1) for j in range(l, i)))


Fixed submission:
l, r = map(int, input().split())
if r // 3 > (l - 1) // 3 and r // 673 > (l - 1) // 673:
    print(0)
else:
    print(min(i * j % 2019 for i in range(l, r + 1) for j in range(l, i)))
Buggy python submission (verdict: Runtime Error):
m = int(input()) // 2
a = sorted(map(int, input().split()))
print(a[n] - a[m - 1])


Fixed submission:
n = int(input())
a = sorted(map(int, input().split()))
print(a[n // 2] - a[n // 2 - 1])
Buggy python submission (verdict: Runtime Error):
from operator import itemgetter
from itertools import accumulate
 
n = int(input())
a = (tuple(map(int, input().split())) for _ in range(n))
c, d = (map(itemgetter(i), sorted(a, key=itemgetter(1)) for i in (0, 1))
print('YNeos'[any(x > y for x, y in zip(accumulate(c), d))::2])

Fixed submission:
from itertools import accumulate

n = int(input())
a = sorted(tuple(map(int, input().split()))[::-1] for _ in range(n))
c, d = zip(*a)
print('YNeos'[any(x < y for x, y in zip(c, accumulate(d)))::2])

Buggy python submission (verdict: Runtime Error):
from operator import itemgetter
from itertools import accumulate
 
n = int(input())
a = sorted(tuple(map(int, reversed(input().split())) for _ in range(n)))
c, d = (map(itemgetter(i), a) for i in (0, 1))
print('YNeos'[any(x < y for x, y in zip(c, accumulate(d)))::2])

Fixed submission:
from itertools import accumulate

n = int(input())
a = sorted(tuple(map(int, input().split()))[::-1] for _ in range(n))
c, d = zip(*a)
print('YNeos'[any(x < y for x, y in zip(c, accumulate(d)))::2])
Buggy python submission (verdict: Runtime Error):
from collections import Counter
n = int(input())
a = [tuple(map(int, input().split())) for _ in range(n)]
c = Counter((y[0] - x[0], y[1] - x[1]) for i, x in enumerate(a) for y in a[:i])
print(n - max(c.values()))


Fixed submission:
from collections import Counter
n = int(input())
a = [tuple(map(int, input().split())) for _ in range(n)]
c = Counter((y[0] - x[0], y[1] - x[1]) for x in a for y in a if x < y)
print(n - max(c.values(), default=0))

Buggy python submission (verdict: Runtime Error):
from collections import Counter
n = int(input())
a = [tuple(map(int, input().split())) for _ in range(n)]
c = Counter((y[0] - x[0], y[1] - x[1]) for x in a for y in a if x < y)
print(n - max(c.values()))


Fixed submission:
from collections import Counter
n = int(input())
a = [tuple(map(int, input().split())) for _ in range(n)]
c = Counter((y[0] - x[0], y[1] - x[1]) for x in a for y in a if x < y)
print(n - max(c.values(), default=0))
Buggy python submission (verdict: Time Limit Exceeded):
h, w = map(int, input().split())
s = [input() for _ in range(h)]
a = [[None] * w for _ in range(h)]
for i in range(h):
    p = 0
    while p < w:
        j = p
        while j < w and s[i][j] == '.':
            j += 1
        for k in range(p, j):
            a[i][k] = j - p
        p = j + 1
r = 0
for j in range(w):
    p = 0
    while p < h:
        i = p
        while i < h and s[i][j] == '.':
            i += 1
        for k in range(p, i):
            r = max(r, a[k][j] + i - p - 1)
        p = i + 1

print(r)


Fixed submission:
from itertools import chain

h, w = map(int, input().split())
s = [input() for _ in range(h)]
a = [[-1] * w for _ in range(h)]
for i in range(h):
    p = 0
    while p < w:
        j = p
        while j < w and s[i][j] == '.':
            j += 1
        for k in range(p, j):
            a[i][k] += j - p
        p = j + 1

for j in range(w):
    p = 0
    while p < h:
        i = p
        while i < h and s[i][j] == '.':
            i += 1
        for k in range(p, i):
            a[k][j] += i - p
        p = i + 1

print(max(chain.from_iterable(a)))

Buggy python submission (verdict: Time Limit Exceeded):
from itertools import chain

h, w = map(int, input().split())
s = [input() for _ in range(h)]
a = [[-1] * w for _ in range(h)]
for i in range(h):
    p = 0
    while p < w:
        j = p
        while j < w and s[i][j] == '.':
            j += 1
        for k in range(p, j):
            a[i][k] += j - p
        p = j + 1

for j in range(w):
    p = 0
    while p < h:
        i = p
        while i < h and s[i][j] == '.':
            i += 1
        for k in range(p, i):
            a[k][j] += i - p
        p = i + 1

print(max(chain.from_iterable(a)))


Fixed submission:
from itertools import chain

h, w = map(int, input().split())
s = [input() for _ in range(h)]
a = [[-1] * w for _ in range(h)]
for i in range(h):
    p = 0
    while p < w:
        j = p
        while j < w and s[i][j] == '.':
            j += 1
        for k in range(p, j):
            a[i][k] += j - p
        p = j + 1

for j in range(w):
    p = 0
    while p < h:
        i = p
        while i < h and s[i][j] == '.':
            i += 1
        for k in range(p, i):
            a[k][j] += i - p
        p = i + 1

print(max(chain.from_iterable(a)))
Buggy python submission (verdict: Runtime Error):
from itertools import islice
 
R = lambda: map(int, input().split())
n, k = R()
v = list(R())
a = sorted((x, i) for i, x in enumerate(v) if x < 0)
ans = max(sum(v[:i - j] + v[n - j:])) -
          sum(islice((x for x, m in a if m < i - j or m >= n - j), k - i))
          for i in range(1, min(n, k) + 1) for j in range(i))
print(ans)


Fixed submission:
import heapq
from itertools import chain

R = lambda: map(int, input().split())
n, k = R()
v = list(R())
r = 0
for i in range(1, min(n, k) + 1):
    for j in range(i):
        s = 0
        h = []
        for m in chain(range(i - j), range(n - j, n)):
            x = v[m]
            s += x
            if x < 0:
                heapq.heappush(h, x)
        j = i
        while h and j < k:
            s -= heapq.heappop(h)
            j += 1
        r = max(r, s)
print(r)

Buggy python submission (verdict: Runtime Error):
import heapq
from itertools import chain

R = lambda: map(int, input().split())
n, k = R()
v = list(R())
r = 0
for i in range(min(n, k)):
    for j in range(i):
        s = 0
        h = []
        for m in chain(range(i - j), range(n - j, n)):
            x = v[m]
            s += x
            if x < 0:
                heapq.heappush(h, x)
        while h and i < k:
            s -= heapq.heappop(h)
            i += 1
        r = max(r, s)
print(r)


Fixed submission:
import heapq
from itertools import chain

R = lambda: map(int, input().split())
n, k = R()
v = list(R())
r = 0
for i in range(1, min(n, k) + 1):
    for j in range(i):
        s = 0
        h = []
        for m in chain(range(i - j), range(n - j, n)):
            x = v[m]
            s += x
            if x < 0:
                heapq.heappush(h, x)
        j = i
        while h and j < k:
            s -= heapq.heappop(h)
            j += 1
        r = max(r, s)
print(r)
Buggy python submission (verdict: Runtime Error):
from math import gcd
from itertools import accumulate

input()
a = list(map(int, input().split()))
b = list(accumulate(a, gcd))
c = list(accumulate(reversed(a), gcd))
b = [c[-2]] + b
c = [b[-2]] + c
print(max(map(gcd, b, c[-2::-1])))


Fixed submission:
from fractions import gcd
from itertools import accumulate

input()
a = list(map(int, input().split()))
b = list(accumulate(a, gcd))
c = list(accumulate(reversed(a), gcd))
print(max(b[-2], c[-2], *map(gcd, b[:-2], c[-3::-1])))

Buggy python submission (verdict: Runtime Error):
from math import gcd
from itertools import accumulate

input()
a = list(map(int, input().split()))
b = list(accumulate(a, gcd))
c = list(accumulate(reversed(a), gcd))
print(max(b[-2], c[-2], *map(gcd, b[:-2], c[-3::-1])))


Fixed submission:
from fractions import gcd
from itertools import accumulate

input()
a = list(map(int, input().split()))
b = list(accumulate(a, gcd))
c = list(accumulate(reversed(a), gcd))
print(max(b[-2], c[-2], *map(gcd, b[:-2], c[-3::-1])))
Buggy python submission (verdict: Runtime Error):
from itertools import accumulate

input()
l = [0] + list(accumulate(c == '.' for c in input()))
print(min(i - x + l[-1] - x for i, x in enumerate(l)))


Fixed submission:
a, b, c = map(int, input().split())
print(('No', 'Yes')[a < c < b or a > c > b])
Buggy python submission (verdict: Runtime Error):
from itertools import accumulate

input()
l = [0, *accumulate(c == '.' for c in input())]
print(min(i - x + l[-1] - x for i, x in enumerate(l)))


Fixed submission:
from itertools import accumulate
 
input()
l = [0] + list(accumulate(c == '.' for c in input()))
print(min(i - x + l[-1] - x for i, x in enumerate(l)))
Buggy python submission (verdict: Runtime Error):
import re
print(max(map(len,re.finditer('[ACGT]*',input()))))

Fixed submission:
p = 'ACGT'
s = input()
l = len(s)
r = 0
i = -1
while i < l:
 i = next((i for i in range(i + 1, l) if s[i] in p), l)
 j = next((i for i in range(i + 1, l) if s[i] not in p), l)
 r = max(r, j - i)
 i = j
print(r)

Buggy python submission (verdict: Runtime Error):
import re
print(max(len(x[0]) for x in re.finditer('[ACGT]*',input())))

Fixed submission:
p = 'ACGT'
s = input()
l = len(s)
r = 0
i = -1
while i < l:
 i = next((i for i in range(i + 1, l) if s[i] in p), l)
 j = next((i for i in range(i + 1, l) if s[i] not in p), l)
 r = max(r, j - i)
 i = j
print(r)
Buggy python submission (verdict: Runtime Error):
import math
n=int(input())
for i in range(1,n+1):
  max = int(math.sqrt(i))
  result = 0
  for x in range(1,max+1):
    for y in range(1,max+1):
      for z in range(1,max+1):
        if x * x + y * y + z * z + x * y + y * z + x * z == i:
          result += 1
  print(result)

Fixed submission:
l,r,d = map(int,input().split())
result = 0
for i in range(l, r+1):
  if i % d == 0:
    result+= 1
print(result)

Buggy python submission (verdict: Runtime Error):
import math
n=int(input())
for i in range(1,n+1):
  max = int(math.sqrt(i))
  result = 0
  for x in range(1,max):
    for y in range(1,max):
      for z in range(1,max):
        if x * x + y * y + z * z + x * y + y * z + x * z == i:
          result += 1
  print(result)

Fixed submission:
l,r,d = map(int,input().split())
result = 0
for i in range(l, r+1):
  if i % d == 0:
    result+= 1
print(result)
Buggy python submission (verdict: Runtime Error):
n = int(input())
l= list(map(int,input().split()))
c = [0] * 10001
for i in l:
  c[i] += 1
n = int(input())
s = sum(c)
for i in range(n):
  be,af = map(int,input().split())
  s -= be * c[be]
  s += af * c[be]
  c[af] += c[be]
  c[be] = 0
  print(s)

Fixed submission:
N = int(input())
A= list(map(int,input().split()))
Q = int(input())
heavy = [0] * (10 ** 5 + 1)
for i in A:
  heavy[i] += 1
s = sum(A)
for i in range(Q):
  be,af = map(int,input().split())
  s -= be * heavy[be]
  s += af * heavy[be]
  heavy[af] += heavy[be]
  heavy[be] = 0
  print(s)

Buggy python submission (verdict: Runtime Error):
def csum(c):
  r = 0
  for index, item in enumerate(c):
    r += index * item
  return r

n = int(input())
l= list(map(int,input().split()))
c = [0] * 10001
for i in l:
  c[i] += 1
n = int(input())
s = csum(c)
for i in range(0, n):
  be,af = map(int,input().split())
  s -= be * c[be]
  s += af * c[be]
  c[af] += c[be]
  c[be] = 0
  print(s)

Fixed submission:
N = int(input())
A= list(map(int,input().split()))
Q = int(input())
heavy = [0] * (10 ** 5 + 1)
for i in A:
  heavy[i] += 1
s = sum(A)
for i in range(Q):
  be,af = map(int,input().split())
  s -= be * heavy[be]
  s += af * heavy[be]
  heavy[af] += heavy[be]
  heavy[be] = 0
  print(s)

Buggy python submission (verdict: Time Limit Exceeded):
def csum(c):
  r = 0
  for index, item in enumerate(c):
    r += index * item
  return r

n = int(input())
l= list(map(int,input().split()))
c = [0] * 100001
for i in l:
  c[i] += 1
n = int(input())
for i in range(0, n):
  be,af = map(int,input().split())
  c[af] += c[be]
  c[be] = 0
  print(csum(c))

Fixed submission:
N = int(input())
A= list(map(int,input().split()))
Q = int(input())
heavy = [0] * (10 ** 5 + 1)
for i in A:
  heavy[i] += 1
s = sum(A)
for i in range(Q):
  be,af = map(int,input().split())
  s -= be * heavy[be]
  s += af * heavy[be]
  heavy[af] += heavy[be]
  heavy[be] = 0
  print(s)

Buggy python submission (verdict: Runtime Error):
def csum(c):
  r = 0
  for index, item in enumerate(c):
    r += index * item
  return r

n = int(input())
l= list(map(int,input().split()))
c = [0] * 10001
for i in l:
  c[i] += 1
n = int(input())
for i in range(0, n):
  be,af = map(int,input().split())
  c[af] += c[be]
  c[be] = 0
  print(csum(c))

Fixed submission:
N = int(input())
A= list(map(int,input().split()))
Q = int(input())
heavy = [0] * (10 ** 5 + 1)
for i in A:
  heavy[i] += 1
s = sum(A)
for i in range(Q):
  be,af = map(int,input().split())
  s -= be * heavy[be]
  s += af * heavy[be]
  heavy[af] += heavy[be]
  heavy[be] = 0
  print(s)
Buggy python submission (verdict: Runtime Error):
li = list(map(int,input().split()))
for i, j in enumerate(li):
  if j == 0:
    echo i + 1

Fixed submission:
li = list(map(int,input().split()))
for i, j in enumerate(li):
  if j == 0:
    print(i + 1)
Buggy python submission (verdict: Runtime Error):
x,y = map(int,input().split())

for i in range(x):
  if 2 * i + 4 * (x - i) == y:
    print('Yes')
    sys.exit()
print('No')

Fixed submission:
x,y = map(int,input().split())
 
for i in range(x+1):
  if 2 * i + 4 * (x - i) == y:
    print('Yes')
    exit()
print('No')
Buggy python submission (verdict: Runtime Error):
a = list(input())
ai = int(a[-1])
if [2,4,5,7,9].includes(ai):
  print('hon')
if [0,1,6,8].includes(ai):
  print('pon')
if [3].includes(ai):
  print('bon')

Fixed submission:
a = list(input())
ai = int(a[-1])
if [2,4,5,7,9].count(ai) > 0:
  print('hon')
if [0,1,6,8].count(ai) > 0:
  print('pon')
if [3].count(ai) > 0:
  print('bon')
Buggy python submission (verdict: Runtime Error):
n,m,x = map(int,input().split())
for i in range(n):
  c.append(list(map(int,input().split())))
print(c)
result = -1
for i in range(2 ** n):
  ct = 0
  t = [0] * m
  for b in range(1, n + 1):
    if i & b > 0:
      ct += c[b - 1][0]
      for j in range(1, m + 1):
        t[j - 1] += c[b - 1][j]
  if result == -1 or ct < result:
    r = 1
    for ti in t:
      if ti < x:
        r = 0
    if r == 1:
      print(ct)
      print(t)
      result = ct
print(result)

Fixed submission:
n,m,x = map(int,input().split())
c = []
a = []
for i in range(n):
  l = list(map(int,input().split()))
  c.append(l[0])
  a.append(l[1:])
result = -1
for i in range(2 ** n):
  ct = 0
  at = [0] * m
  for b in range(0, n):
    bb = 1 << b 
    if i & bb > 0:
      ct += c[b]
      for j in range(0, m):
        at[j] += a[b][j]
  if result == -1 or ct < result:
    r = 1
    for ati in at:
      if ati < x:
        r = 0
    if r == 1:
      result = ct
print(result)
Buggy python submission (verdict: Time Limit Exceeded):
n,k = map(int,input().split())
m = [0] + list(map(int,input().split()))
p = 1

q = [1]

while True:
  p = m[p]
  if (p in q):
    break
  q.append(p)
i = q.index(p)
q1 = q[:i]
q2 = q[i:]
if len(q1) > 0 and k < len(q1):
  print(q1[k])
else: 
  print(q2[(k - len(q1)) % len(q2)])

Fixed submission:
n,k = map(int,input().split())
m = [0] + list(map(int,input().split()))
p = 1

c = [0] * (n + 1)

q = [1]

while True:
  p = m[p]
  if (c[p] == 1):
    break
  c[p] += 1
  q.append(p)
i = q.index(p)
q1 = q[:i]
q2 = q[i:]
if len(q1) > 0 and k < len(q1):
  print(q1[k])
else: 
  print(q2[(k - len(q)) % len(q2)])

Buggy python submission (verdict: Time Limit Exceeded):
n,k = map(int,input().split())
m = [0] + list(map(int,input().split()))
p = 1

q = [1]

while True:
  p = m[p]
  if (p in q):
    break
  q.append(p)
i = q.index(p)
q1 = q[:i]
q2 = q[i:]
if len(q1) > 0 and k < len(q1):
  print(q1[k])
else: 
  print(q2[(k - len(q1)) % len(q2)])

Fixed submission:
n,k = map(int,input().split())
m = [0] + list(map(int,input().split()))
p = 1

c = [0] * (n + 1)

q = [1]

while True:
  p = m[p]
  if (c[p] == 1):
    break
  c[p] += 1
  q.append(p)
i = q.index(p)
q1 = q[:i]
q2 = q[i:]
if len(q1) > 0 and k < len(q1):
  print(q1[k])
else: 
  print(q2[(k - len(q)) % len(q2)])

Buggy python submission (verdict: Time Limit Exceeded):
n,k = map(int,input().split())
m = [0] + list(map(int,input().split()))
p = 1

q = [1]

while True:
  p = m[p]
  if (p in q):
    break
  q.append(p)
i = q.index(p)
if len(q[:i]) > 0 and k < len(q[:i]):
  print(q[k])
else: 
  q2 = q[i:]
  print(q2[(k - len(q[:i])) % len(q2)])

Fixed submission:
n,k = map(int,input().split())
m = [0] + list(map(int,input().split()))
p = 1

c = [0] * (n + 1)

q = [1]

while True:
  p = m[p]
  if (c[p] == 1):
    break
  c[p] += 1
  q.append(p)
i = q.index(p)
q1 = q[:i]
q2 = q[i:]
if len(q1) > 0 and k < len(q1):
  print(q1[k])
else: 
  print(q2[(k - len(q)) % len(q2)])
Buggy python submission (verdict: Runtime Error):
N = input()
print 'ABC' if N == 'ARC' else print 'ARC'

Fixed submission:
N = input()
ans = 'ABC' if N == 'ARC' else 'ARC'
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
def solve():
    N = int(input())
    A = list(map(int, input().split()))

    sum_a = 0

    for i in range(N-1):
        for k in range(i+1,N):
            sum_a += A[i] * A[k]

  #  print(sum_a)

    ans = sum_a % 1000000007

    print(ans)


if __name__ == "__main__":
    solve()



Fixed submission:
def solve():
    N = int(input())
    A = list(map(int, input().split()))

    sum_a = 0
    tmp = 0
    
    for i in range(N-1):
        tmp += A[i]
        sum_a += tmp * A[i+1]

  #  print(sum_a)

    ans = sum_a % 1000000007

    print(ans)


if __name__ == "__main__":
    solve()
Buggy python submission (verdict: Runtime Error):
N, M, C = map(int, input().split())                                                                                                                         
  2 B = list(map(int, input().split()))
  3  
  4 S = [[0]*M for i in range(N)]
  5 for i in range(N):
  6     S[i] = list(map(int, input().split()))
  7  
  8 b = 0
  9  
 10 for i in range(N):
 11     a = 0
 12     for ii in range(M):
 13         a += S[i][ii] * B[ii]
 14     a += C
 15     if a > 0:
 16         b += 1
 17  
 18 print(str(b))

Fixed submission:
N, M, C = map(int, input().split())                                                                                                                         
B = list(map(int, input().split()))
 
S = [[0]*M for i in range(N)]
for i in range(N):
    S[i] = list(map(int, input().split()))
  
b = 0
  
for i in range(N):
    a = 0
    for ii in range(M):
        a += S[i][ii] * B[ii]
    a += C
    if a > 0:
        b += 1
print(str(b))

Buggy python submission (verdict: Runtime Error):
N, M, C = map(int, input().split())
  2 B = list(map(int, input().split()))
  3  
  4 S = [[0]*M for i in range(N)]
  5 for i in range(N):                                                                                                                                          
  6     S[i] = list(map(int, input().split()))
  7  
  8 b = 0
  9  
 10 for i in range(N):
 11     a = 0
 12     for ii in range(M):
 13         a += S[i][ii] * B[ii]
 14     a += C
 15     if a > 0:
 16         b += 1
 17  
 18 print(str(b))

Fixed submission:
N, M, C = map(int, input().split())                                                                                                                         
B = list(map(int, input().split()))
 
S = [[0]*M for i in range(N)]
for i in range(N):
    S[i] = list(map(int, input().split()))
  
b = 0
  
for i in range(N):
    a = 0
    for ii in range(M):
        a += S[i][ii] * B[ii]
    a += C
    if a > 0:
        b += 1
print(str(b))
Buggy python submission (verdict: Time Limit Exceeded):
N, M = map(int, input().split())

S = [[0]*2 for i in range(N)]
for i in range(N):
    S[i] = list(map(int, input().split()))
     
S = sorted(S)

quantitys = 0
total = 0

for i in range(N):
    quantity = 0
    x = 0
    for ii in range(S[i][1]):
        if quantitys<M:
            quantitys += 1
            quantity += 1
    x += quantity * S[i][0]
    total += x

print(str(total))



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

S = [[0]*2 for i in range(N)]
for i in range(N):
    S[i] = list(map(int, input().split()))
     
S = sorted(S)

quantitys = 0
total = 0

for i in range(N):
    # 【根本註】この for 文の中がソースコードの変更点となります。
    # ここまでのコードで、二次元配列 S に「エナジードリンクが安い順」に
    # 金額と本数のセットを格納できているわけですから、あとは「その店で何本買えばよいか？」
    # を計算し、for 文を使わずに普通の数式ベースで金額・本数の計算を行ってしまうのが正しい方法となります。
    
    #【根本註】必要な本数 M から「今何本購入しているか」を表す quantitys を引くことで、
    # 「あと何本購入する必要があるか」を表す変数 need を計算します。
    need = M - quantitys

    #【根本註】この変数 need：「あと何本必要か」が、今参照している店の在庫本数：S[i][1] 以上ならば、
    # その店の在庫を全部購入することができるはずです。（在庫を全部買うと、残りが 0 本ちょうどか 1 本以上に
    # なります）
    if(need - S[i][1])>=0:
        # 【根本註】そのため、この場合は S[i][1] 本のエナジードリンクを S[i][0] 円で買ったものとして、
        # quantitys には S[i][1] を足し、金額の合計 total には S[i][0] * S[i][1] の 金額 × 本数 の合計額を
        # 足してしまいます。こうすることで、従来は購入する本数分だけ回していた for 文の処理を全て削減し、
        # 1 本の数式に落とし込むことができ、処理にかかる時間を非常に大きく削減することが可能になるのです。
        quantitys += S[i][1]
        total += S[i][0] * S[i][1]

    #【根本註】一方で、変数 need：「あと何本必要か」が、今参照している店の在庫本数：S[i][1] より少なければ、
    # その店では need 本だけ購入すれば、必要な本数ちょうどに揃えることが可能になります。
    else:
        # 【根本註】同様に、この場合は need 本のエナジードリンクを S[i][0] 円で買ったものとして、
        # quantitys には need を足し、金額の合計 total には S[i][0] * need の 金額 × 本数 の合計額を
        # 足してしまいます。
        quantitys += need
        total += S[i][0] * need

    #【根本註】ここまでの処理を終えた段階で、もし M （必要本数）から quantities（購入済の本数）を引いた値が
    # ゼロになったならば、必要な本数を買い揃えることができたということになりますから、ループを終了します。
    if M-quantitys == 0:
        break

print(str(total))
Buggy python submission (verdict: Runtime Error):
N, Y = map(int, input().split())

a = 0

for i in range(N):
    for ii in range(N):
        for iii in range(N):
            ans = 10000 * i + 5000 * ii + 1000 * iii
            J = i + ii + iii
            if ans == Y and J == N:
                print(i,ii,iii)
                a += 1
                break
        if a != 0:
            break
    if a != 0:
        break

if a == 0:
    print(-1,-1,-1)


Fixed submission:
S = str(input())

print(S.replace('7', '8', 1))