Buggy python submission (verdict: Runtime Error):
import numpy as np
N,K=map(int, input().split())
A =list(map(int,input().split()))
MOD = 10 ** 9 + 7
if N==K:
  ans0 = 1
  for a in A[0:N]:
    ans0 *= a
    ans0 %= MOD
  print(ans0)
  exit()
A=sorted(A)  
if (K%2==1 and A[-1]<0):
  ans1 = 1
  for a in A[N-K:N]:
    ans1 *= a
    ans1 %= MOD
  print(ans1)
  exit()

A=sorted(A, key=lambda x:abs(x), reverse=True)
AA=[np.sign(i) for i in A]
 
ansA = 1
for a in A[0:K]:
  ansA *= a
  ansA %= MOD
ansAA = AA[0:K].count(-1)%2
if ansA==0 or ansAA==0:
  print(ansA)
  exit()

#while ansA>0:
#  ansA-=MOD

B1=A[0:K]
C1=A[0:K]
B2=sorted(A[K:N])
Bp=[i for i in A[0:K] if i>0]
Bm=[i for i in A[0:K] if i<0]
 
if B2[0]>0:B2.insert(0,0)
if B2[-1]<0:B2.insert(-1,0)
if not Bp:Bp.insert(0,B1[-1])
if not Bm:Bm.insert(0,B1[0])
  
B1.remove(Bp[-1])
B1.append(min(B2[0],0))

ansB = 1
for a in B1[0:K]:
  ansB *= a
  ansB %= MOD

C1.remove(Bm[-1])
C1.append(max(B2[-1],0))
 
ansC = 1
for a in C1[0:K]:
  ansC *= a
  ansC %= MOD

BB1=[np.sign(i) for i in B1]
ansBB1 = BB1[0:K].count(-1)%2
BB2=[np.sign(i) for i in C1]
ansBB2 = BB2[0:K].count(-1)%2

if ansBB1==1:
  print(ansC)
  exit()
if ansBB2==1:
  print(ansB)
  exit()

if abs(Bp[-1]*B2[-1])-abs(Bm[-1]*B2[0])>=0:
  print(ansC)
else: print(ansB)

Fixed submission:
import math
N=int(input())
print(1000*math.ceil(N/1000)-N)

Buggy python submission (verdict: Runtime Error):
import numpy as np
import sys
from functools import reduce
from operator import add, mul
 
N,K=map(int, input().split())
A =list(map(int,input().split()))
MOD = 10 ** 9 + 7
A=sorted(A)
if K%2==1 and A[-1]<0:
  ans0 = 1
  for a in A[N-K:N]:
    ans0 *= a
    ans0 %= MOD
  print(ans0)
  exit()
 
ansA = 1
for a in A[0:K]:
  ansA *= a
  ansA %= MOD
 
A=sorted(A, reverse=True)
ansB = 1
for a in A[0:K]:
  ansB *= a
  ansB %= MOD
 
A=sorted(A, key=lambda x:abs(x), reverse=True)
ansC = 1
for a in A[0:K]:
  ansC *= a
  ansC %= MOD
 
#print(ansA, ansB, ansC)
print(max(ansA, ansB, ansC)%MOD)
exit()
#print(factorial(0,30))
      
#A=sorted(A)
 
#Amin=factorial(0,K)
#if Amin<0 and 0 in A[K:N]:Amin=0
 
A=sorted(A, reverse=True)
 
Amax=factorial(0,K)
 
#A=sorted(A, key=lambda x: abs(x), reverse=True)
 
#B=A[0:K-1]
#C=A[K-1:N]
 
#Bmax=factorial(0,K-1)*C[0]
#print(factorial(0,K-1),C[0])
#print(Bmax)
 
#C=sorted(C)
#print(C)
#Bmin=factorial(0,K-1)*C[0]
#print(Bmin)
#print(Amax,Amin,Bmax,Bmin)
#print(max(Amax,Amin,Bmax,Bmin)%(10**9+7))
print(Amax)
import numpy as np
import sys
from functools import reduce
from operator import add, mul
 
N,K=map(int, input().split())
A =list(map(int,input().split()))
MOD = 10 ** 9 + 7
A=sorted(A)
if K%2==1 and A[-1]<0:
  ans0 = 1
  for a in A[N-K:N]:
    ans0 *= a
    ans0 %= MOD
  print(ans0)
  exit()

ansA = 1
for a in A[0:K]:
  ansA *= a
  if ansA>0:ansA %= MOD

A=sorted(A, reverse=True)
ansB = 1
for a in A[0:K]:
  ansB *= a
  if ansB>0:nsB %= MOD

A=sorted(A, key=lambda x:abs(x), reverse=True)
ansC = 1
for a in A[0:K]:
  ansC *= a
  if ansC>0:ansC %= MOD

#print(ansA, ansB, ansC)
print(max(ansA, ansB, ansC)%MOD)
exit()


Fixed submission:
import math
N=int(input())
print(1000*math.ceil(N/1000)-N)

Buggy python submission (verdict: Runtime Error):
import numpy as np
import sys
 
N,K=map(int, input().split())
A =np.array(list(map(int,input().split())), dtype=np.int64)
#A=sorted(A, reverse=True)
 
def factorial(p,q):
    fact = 1
    for integer in A[p:q]:
        fact *= integer
        fact = fact%(10**9+7)
    return fact
 
A=sorted(A)
 
Amin=factorial(0,K)%(10**9+7)
A=sorted(A, reverse=True)
 
Amax=factorial(0,K)%(10**9+7)
 
 
A=sorted(A, key=lambda x: abs(x), reverse=True)
 
B=A[0:K-1]
C=A[K-1:N]
 
 
Bmax=factorial(0,K-1)*C[0]%(10**9+7)
#print(factorial(0,K-1),C[0])
#print(Bmax)
 
C=sorted(C)
#print(C)
Bmin=factorial(0,K-1)*C[0]%(10**9+7)
#print(Bmin)
 
print(max(Amax,Amin,Bmax,Bmin))

Fixed submission:
import math
N=int(input())
print(1000*math.ceil(N/1000)-N)