Harryxun/testdata huggingface dataset:
Buggy python submission (verdict: Runtime Error):
# coding: utf-8
# Your code here!
# coding: utf-8
from fractions import gcd 
from functools import reduce
import sys
sys.setrecursionlimit(200000000)
from inspect import currentframe


# my functions here!
#標準エラー出力
def printargs2err(*args):
    names = {id(v):k for k,v in currentframe().f_back.f_locals.items()}
    print(', '.join(names.get(id(arg),'???')+' : '+repr(arg) for arg in args),file=sys.stderr)
def debug(x):
    print(x,file=sys.stderr)
def printglobals():
    for (symbol, value) in globals().items():
        print('symbol="%s"、value=%s' % (symbol, value),file=sys.stderr)
def printlocals():
    for (symbol, value) in locals().items():
        print('symbol="%s"、value=%s' % (symbol, value),file=sys.stderr)
#入力（後でいじる）
def pin(type=int):
    return map(type,input().split())

"""
"""

#solution:

#input
x,y=pin()
t=abs(y)-abs(x)
if x*y<0:
    t=abs(t)+1
elif t*(y-x)<0:
    t=abs(t)+2
print(t)
#print(["No","Yes"][cond])
#print([["NA","YYMM"],["MMYY","AMBIGUOUS"]][cMMYY][cYYMM])
"""
#printデバッグ消した？
#前の問題の結果見てないのに次の問題に行くの？
"""
"""
お前カッコ閉じるの忘れてるだろ
"""

Fixed submission:
# coding: utf-8
# Your code here!
# coding: utf-8
from fractions import gcd 
from functools import reduce
import sys
sys.setrecursionlimit(200000000)
from inspect import currentframe


# my functions here!
#標準エラー出力
def printargs2err(*args):
    names = {id(v):k for k,v in currentframe().f_back.f_locals.items()}
    print(', '.join(names.get(id(arg),'???')+' : '+repr(arg) for arg in args),file=sys.stderr)
def debug(x):
    print(x,file=sys.stderr)
def printglobals():
    for (symbol, value) in globals().items():
        print('symbol="%s"、value=%s' % (symbol, value),file=sys.stderr)
def printlocals():
    for (symbol, value) in locals().items():
        print('symbol="%s"、value=%s' % (symbol, value),file=sys.stderr)
#入力（後でいじる）
def pin(type=int):
    return map(type,input().split())

#繰り返し自乗法だよ
#これはnのp乗をmで割ったあまりをだすよ
def modular_w_binary_method (n,m,p):
    ans=1 if n>0 else 0
    while(p>0):
        if p%2==1:
            ans=(ans*n)%m
        n=(n**2)%m
        p//=2
    return ans
#mod上でのaの逆元を出すよ
"""
    フェルマーの小定理より a**(p)%p==a isTrue
    これを利用すれば a**(p-2)%p==a**(-1) isTrue
    元と逆元とをかけてpで割れば1が余るよ！
"""
def modular_inverse(a,prime):
    return(modular_w_binary_method(a,prime,prime-2))
#逆元を使うと容易に頑張れるｃ
def conbination(n,a,mod=10**9+7):
    #cはイラない
    res=1 
    for s in range(a):
        res=(res*(n-s)*(modular_inverse(s+1,mod)))%mod

        
    return res
#操作から作れるものの組み合わせは何個かー＞同じものでも違う方法で構成できるかから考える方法もある
"""
"""

#solution:

#input
N,=pin()
ans=0
A,B=[],[]
for _ in range(N):
    a,b=pin()
    A.append(a)
    B.append(b)
for i in range(N-1,-1,-1):
    #print("b-a=",(B[i]-A[i])%B[i])
    temp=(B[i]-A[i]-ans)%B[i]
    #print(temp)
    ans+=temp
print(ans)
#print(h)
#print(m)
#print(["No","Yes"][cond])
#print([["NA","YYMM"],["MMYY","AMBIGUOUS"]][cMMYY][cYYMM])
"""
#printデバッグ消した？
#前の問題の結果見てないのに次の問題に行くの？
"""
"""
お前カッコ閉じるの忘れてるだろ
"""
Buggy python submission (verdict: Runtime Error):
if input() in "auieo":
    cond=1
print(["consonant","vowel"][cond])

Fixed submission:
cond=0
if input() in "auieo":
    cond=1
print(["consonant","vowel"][cond])
Buggy python submission (verdict: Runtime Error):
import math
N=int(input())
p=math.sqrt(N*2-0.25)-0.5
q=int(p)+1
M=q*(q+1)//2
L=M-N#must0or+
for i in range(1,q+1):
    if i != L:
        print(i)

Fixed submission:
s=input()
ans=[]
for i in s:
    if i!="B":
        ans.append(i)
    else:
        if ans!=[]:
            ans.pop(-1)
p=""
for j in ans:
   p+=j 
print(p)
Buggy python submission (verdict: Time Limit Exceeded):
import sys
import copy
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())
INF = 1000000000000

n,k = LI()
a = LI()

preval = 1
val = 1
for i in range(n):
    val = val * a[i]
    if(i >= k):
        val = val // a[i-k]
        if(preval < val):
            print('Yes')
        else:
            print('No')
    preval = val

Fixed submission:
import sys
import copy
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())
INF = 1000000000000

n,k = LI()
a = LI()

for i in range(n):
    if(i >= k):
        if(a[i] > a[i-k]):
            print('Yes')
        else:
            print('No')
Buggy python submission (verdict: Runtime Error):
import sys
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())
INF = 1000000000000

import bisect

n = I()
a = LI()
q = I()

cnt = [0]*100000
for i in a:
    cnt[i] += 1
sm = sum(a)

for i in range(q):
    b,c = LI()
    sm += (c-b)*cnt[b]
    if(c != b):
        cnt[c] += cnt[b]
        cnt[b] = 0
    print(sm)

Fixed submission:
import sys
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())
INF = 1000000000000

import bisect

n = I()
a = LI()
q = I()

cnt = [0]*1000000
for i in a:
    cnt[i] += 1
sm = sum(a)

for i in range(q):
    b,c = LI()
    sm += (c-b)*cnt[b]
    if(c != b):
        cnt[c] += cnt[b]
        cnt[b] = 0
    print(sm)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())
INF = 1000000000000

import bisect

n = I()
a = LI()
a.sort()
q = I()
val = sum(a)
for i in range(q):
    b,c = LI()
    l = bisect.bisect_left(a,b)
    r = bisect.bisect_right(a,b)
    val += (c-b)*(r-l)
    for j in range(l,r):
        a[j] = c
    a.sort()
    print(val)

Fixed submission:
import sys
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())
INF = 1000000000000

import bisect

n = I()
a = LI()
q = I()

cnt = [0]*1000000
for i in a:
    cnt[i] += 1
sm = sum(a)

for i in range(q):
    b,c = LI()
    sm += (c-b)*cnt[b]
    if(c != b):
        cnt[c] += cnt[b]
        cnt[b] = 0
    print(sm)
Buggy python submission (verdict: Time Limit Exceeded):
import sys
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())

n = I()
a = LI()

ret = a[0]
for i in range(1,n):
    ret = ret * a[i]

if(ret > 1000000000000000000):
    ret = -1


print(ret)

Fixed submission:
import sys
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())

n = I()
a = LI()

if (0 in a):
    ret = 0
else:
    ret = a[0]
    for i in range(1,n):
        ret = ret * a[i]
        if(ret > 1000000000000000000):
            ret = -1
            break

print(ret)
Buggy python submission (verdict: Time Limit Exceeded):
s = input()
n = len(s)

a = [0]*2019
count = 0
val = 10
for i in range(n):
    tmp = int(s[n-i-1:n]) % 2019
    count = count + a[tmp]
    a[tmp] = a[tmp] + 1
    if(tmp == 0):
        count = count + 1
    val = val * 10

print(count)

Fixed submission:
s = input()[::-1]
n = len(s)

a = [0]*2019
a[0] = 1
count = 0
val = 1
current = 0
for c in s:
    current = (current + val * int(c)) % 2019
    count += a[current%2019]
    a[current%2019] += 1
    val = val * 10 % 2019

print(count)

Buggy python submission (verdict: Runtime Error):
s = input()
n = len(s)

a = [0]*2019
count = 0
val = 10
for i in range(n):
    tmp = int(s[n-i-1,n]) % 2019
    count = count + a[tmp]
    a[tmp] = a[tmp] + 1
    if(tmp == 0):
        count = count + 1
    val = val * 10

print(count)

Fixed submission:
s = input()[::-1]
n = len(s)

a = [0]*2019
a[0] = 1
count = 0
val = 1
current = 0
for c in s:
    current = (current + val * int(c)) % 2019
    count += a[current%2019]
    a[current%2019] += 1
    val = val * 10 % 2019

print(count)

Buggy python submission (verdict: Time Limit Exceeded):
s = input()
n = len(s)
x = int(s)

a = [0]*2019
count = 0
val = 10
for i in range(n):
    tmp = (x % val) % 2019
    count = count + a[tmp]
    a[tmp] = a[tmp] + 1
    if(tmp == 0):
        count = count + 1
    val = val * 10

print(count)

Fixed submission:
s = input()[::-1]
n = len(s)

a = [0]*2019
a[0] = 1
count = 0
val = 1
current = 0
for c in s:
    current = (current + val * int(c)) % 2019
    count += a[current%2019]
    a[current%2019] += 1
    val = val * 10 % 2019

print(count)

Buggy python submission (verdict: Time Limit Exceeded):
s = input()
n = len(s)
x = int(s)

a = [0]*2019
count = 0
val = 10
for i in range(n):
    tmp = (x % val) % 2019
    count = count + a[tmp]
    a[tmp] = a[tmp] + 1
    if(tmp == 0):
        count = count + 1
    val = val * 10

print(count)

Fixed submission:
s = input()[::-1]
n = len(s)

a = [0]*2019
a[0] = 1
count = 0
val = 1
current = 0
for c in s:
    current = (current + val * int(c)) % 2019
    count += a[current%2019]
    a[current%2019] += 1
    val = val * 10 % 2019

print(count)

Buggy python submission (verdict: Time Limit Exceeded):
s = input()
n = len(s)

a = [0]*2019
count = 0
for i in range(n):
    tmp = int(s[n-i-1:n]) % 2019
    count = count + a[tmp]
    a[tmp] = a[tmp] + 1
    if(tmp == 0):
        count = count + 1

print(count)

Fixed submission:
s = input()[::-1]
n = len(s)

a = [0]*2019
a[0] = 1
count = 0
val = 1
current = 0
for c in s:
    current = (current + val * int(c)) % 2019
    count += a[current%2019]
    a[current%2019] += 1
    val = val * 10 % 2019

print(count)
Buggy python submission (verdict: Runtime Error):
import utility

n,m = map(int, input().split(" "))

result = 0
if(n >=1):
    result = result + n*(n-1)/2

if(m >=1):
    result = result + m*(m-1)/2

print(int(result))

Fixed submission:
n,m = map(int, input().split(" "))

result = 0
if(n >=1):
    result = result + n*(n-1)/2

if(m >=1):
    result = result + m*(m-1)/2

print(int(result))
Buggy python submission (verdict: Runtime Error):
n = int(input())
data = list(map(int, input().split(" ")))
count = [0]*n
for i in range(n):
    count[data[i]] = count[data[i]]+1

val = [0]*n
sumval = 0
for i in range(n):
    if(count[i] >= 2):
        val[i] = count[i]-1
        sumval = sumval + int(count[i]*(count[i]-1)/2)

for i in range(n):
    print(sumval - val[data[i]])

Fixed submission:
n = int(input())
data = list(map(int, input().split(" ")))
count = [0]*(n+1)
for i in range(n):
    count[data[i]] = count[data[i]]+1

val = [0]*(n+1)
sumval = 0
for i in range(n+1):
    if(count[i] >= 2):
        val[i] = count[i]-1
        sumval = sumval + int(count[i]*(count[i]-1)/2)

for i in range(n):
    print(sumval - val[data[i]])
Buggy python submission (verdict: Time Limit Exceeded):
s = input()
q = int(input())

trans = False
for i in range(q):
    query = input().split()
    if(query[0] == '1'):
        trans = not trans            
    else:
        if(trans):
            if(query[1] == '1'):
                s = s + query[2]
            else:
                s = query[2] + s
        else:
            if(query[1] == '1'):
                s = query[2] + s
            else:
                s = s + query[2]

if(trans):
    s = s[::-1]
print(s)

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

trans = False
s2 = ''
for i in range(q):
    query = input().split()
    if(query[0] == '1'):
        trans = not trans
    else:
        if(trans):
            if(query[1] == '1'):
                s = s + query[2]
            else:
                s2 = s2 + query[2]
        else:
            if(query[1] == '1'):
                s2 = s2 + query[2]
            else:
                s = s + query[2]

s2 = s2[::-1]
s = s2 + s
if(trans):
    s = s[::-1]
print(s)
Buggy python submission (verdict: Runtime Error):
n,k = map(int, input().split())
p = list(map(int, input().split()))

rsum  = [0]*n
for i in range(n):
    rsum[i] = (p[i]+1) / 2
    if(i != 0):
        rsum[i] = rsum[i] + rsum[i-1]

if(n == k):
    max = rsum[n-1]
else:
    for i in range(n-k):
        if(max < rsum[i+k] - rsum[i]):
            max = rsum[i+k] - rsum[i]
print(max)

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

rsum  = [0]*n
for i in range(n):
    rsum[i] = (p[i]+1) / 2
    if(i != 0):
        rsum[i] = rsum[i] + rsum[i-1]

result = 0
if(n == k):
    result = rsum[n-1]
else:
    for i in range(n-k):
        if(result < rsum[i+k] - rsum[i]):
            result = rsum[i+k] - rsum[i]
print(result)

Buggy python submission (verdict: Runtime Error):
n,k = map(int, input().split())
p = list(map(int, input().split()))

rsum  = [0]*n
for i in range(n):
    rsum[i] = (p[i]+1) / 2
    if(i != 0):
        rsum[i] = rsum[i] + rsum[i-1]

if(n == k):
    max = rsum[n]
else:
    for i in range(n-k):
        if(max < rsum[i+k] - rsum[i]):
            max = rsum[i+k] - rsum[i]
print(max)

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

rsum  = [0]*n
for i in range(n):
    rsum[i] = (p[i]+1) / 2
    if(i != 0):
        rsum[i] = rsum[i] + rsum[i-1]

result = 0
if(n == k):
    result = rsum[n-1]
else:
    for i in range(n-k):
        if(result < rsum[i+k] - rsum[i]):
            result = rsum[i+k] - rsum[i]
print(result)
Buggy python submission (verdict: Time Limit Exceeded):

n = int(input())
s = input()

d = [0]*1000
for i in range(n-2):
    for j in range(i+1,n-1):
        for k in range(j+1,n):
            d[int(s[i])*100+int(s[j])*10+int(s[k])] = 1

count = 0
for i in range(1000):
    if(d[i] == 1):
        count += 1

print(count)

Fixed submission:

n = int(input())
s = input()

result = 0
c = [0]*3
for i in range(1000):
    count = 0
    c[0] = str(i // 100)
    c[1] = str((i % 100) // 10)
    c[2] = str(i % 10)
    for j in range(n):
        if(c[count] == s[j]):
            count += 1
        if(count == 3):
            result += 1
            break

print(result)
Buggy python submission (verdict: Time Limit Exceeded):
def multiply(arr):
    ans = 1
    for i in arr:
        ans *= i
    if ans > 1000000000000000000:
            return -1
    return ans
n = int(input())
nums = list(map(int, input().split(' ')))
print(multiply(nums))

Fixed submission:
def multiply(arr):
    ans = 1
    if 0 in arr:
        return 0
    for i in arr:
        ans *= i
        if ans > 1000000000000000000:
            return -1
    return ans
n = int(input())
nums = list(map(int, input().split(' ')))
print(multiply(nums))
Buggy python submission (verdict: Runtime Error):
n = int(input())
res = list(map(int, input().split()))
ans = 0 
for x in res:
  ans += 1/res
print(1/ans)

Fixed submission:
n = int(input())
res = list(map(int, input().split()))
ans = 0 
for x in res:
  ans += 1/x
print(1/ans)
Buggy python submission (verdict: Runtime Error):
h,w,K=map(int,input().split())
s=[list(input())for i in range(h)]
import numpy as np
s=np.array(s)
l=[]

for i in range(h):
    l.append(len(s[i][s[i]=="#"]))
for i in range(w):
    l.append(len(s[:,i][s[:,i]=="#"]))
ss=sum(l)//2
n=h+w
ans=0
for i in range(1<<n):
    tmp=ss
    for j in range(h):
        if i>>j&1:
            tmp-=l[j]
    for j in range(h,n):
        if i>>j&1:
            tmp-=l[j]
            for idx,k in enumerate(s[:,j-h]):
                if k=="#":
                    if i>>idx&1:
                        tmp+=1
    if tmp==K:
        ans+=1
print(ans)







Fixed submission:
h,w,K=map(int,input().split())
s=[list(input())for i in range(h)]
import numpy as np
s=np.array(s)
l=[]

for i in range(h):
    l.append(len(s[i][s[i]=="#"]))
for i in range(w):
    l.append(len(s[:,i][s[:,i]=="#"]))
ss=sum(l)//2
n=h+w
ans=0
for i in range(1<<n):
    tmp=ss
    for j in range(h):
        if i>>j&1:
            tmp-=l[j]
    for j in range(h,n):
        if i>>j&1:
            tmp-=l[j]
            for idx,k in enumerate(s[:,j-h]):
                if k=="#":
                    if i>>idx&1:
                        tmp+=1
    if tmp==K:
        ans+=1
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
n,k=[int(j)for j in input().split()]
a=[int(j)for j in input().split()]
if n<=k:
    print(*[n]*n)
    exit()
import copy
for _ in range(k):
    table=[0]*n
    for i in range(n):
        table[max(i-a[i],0)]+=1
        if i+a[i]+1<n:
            table[i+a[i]+1]-=1
    for i in range(1,n):
        table[i]+=table[i-1]
    a=copy.deepcopy(table)
print(*a)








Fixed submission:
n,k=[int(j)for j in input().split()]
a=[int(j)for j in input().split()]
if n<=k:
    print(*[n]*n)
    exit()
import copy
for _ in range(k):
    table=[0]*n
    for i in range(n):
        table[max(i-a[i],0)]+=1
        if i+a[i]+1<n:
            table[i+a[i]+1]-=1
    for i in range(1,n):
        table[i]+=table[i-1]
    a=copy.deepcopy(table)
    if a==[n]*n:
        break
print(*a)
Buggy python submission (verdict: Time Limit Exceeded):
def answer():
    s = input()
    q = int(input())
    rev = False
    for i in range(q):
        query = input().split()

        if query[0] == '2':
            f, c = int(query[1]), query[2]
            if (not rev and f == 1) or (rev and f == 2):
                s = c + s
            else:
                s = s + c
        else:
            rev = not rev
    if rev:
        return s[::-1]
    return s

print(answer())

Fixed submission:
from collections import deque

def answer():
    s = deque(input())
    q = int(input())
    rev = False
    for i in range(q):
        query = input().split()
        if int(query[0]) == 2:
            f, c = int(query[1]), query[2]
            if (not rev and f == 1) or (rev and f == 2):
                s.appendleft(c)
            else:
                s.append(c)
        else:
            rev = not rev
    if rev:
        s = list(s)
        s = s[::-1]
    print(''.join(s))
    return

answer()
Buggy python submission (verdict: Runtime Error):
998244353 99824435

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

if (a + b) % 2 != 0:
    print("IMPOSSIBLE")
else:
    print((a + b) // 2)
Buggy python submission (verdict: Time Limit Exceeded):
MOD = int(1e9 + 7)

s = input()
digits = len(s)

cnt = 0
for i, c in enumerate(reversed(s)):
    if c == '?':
        continue
    n = int(c) * pow(10, i, 13) % 13
    cnt += n
# print(cnt)

before = [0] * 13
first_time = True
for i, c in enumerate(reversed(s)):
    if c != '?':
        continue
    if first_time:
        for j in range(10):
            n = j * pow(10, i, 13) % 13
            before[n] += 1
        first_time = False
        continue
    current = [0] * 13
    for j in range(10):
        n = j * pow(10, i, 13) % 13
        current[n] += 1
    after = [0] * 13
    for j in range(13):
        for k in range(13):
            after[j] += before[k] * current[(13 - k + j) % 13]
        after[j] %= MOD
    before = after

if first_time:
    if cnt % 13 == 5:
        print(1)
    else:
        print(0)
else:
    print(before[(5 - (cnt % 13)) % 13])


Fixed submission:
MOD = int(1e9 + 7)

s = input()
digits = len(s)

cnt = 0
for i, c in enumerate(reversed(s)):
    if c == '?':
        continue
    n = int(c) * pow(10, i, 13) % 13
    cnt += n
# print(cnt)

before = [0] * 13
first_time = True
for i, c in enumerate(reversed(s)):
    if c != '?':
        continue
    if first_time:
        for j in range(10):
            n = j * pow(10, i, 13) % 13
            before[n] += 1
        first_time = False
        continue
    current = [0] * 13
    for j in range(10):
        n = j * pow(10, i, 13) % 13
        current[n] += 1
    after = [0] * 13
    for j in range(13):
        for k in range(13):
            after[j] += before[k] * current[(13 - k + j) % 13]
        after[j] %= MOD
    before = after

if first_time:
    if cnt % 13 == 5:
        print(1)
    else:
        print(0)
else:
    print(before[(5 - (cnt % 13)) % 13])
Buggy python submission (verdict: Time Limit Exceeded):
n, k = list(map(int, input().split()))
mod = int(1e9 + 7)

def comb(a, b):
    dp = [[0 for i in range(b+1)] for j in range(a+1)]
    for j in range(b+1):
        dp[0][j] = 0
    for i in range(a + 1):
        dp[i][0] = 1

    for i in range(1, a+1):
        for j in range(1, b+1):
            dp[i][j] = dp[i-1][j-1] % mod + dp[i-1][j] % mod
    return dp[a][b] % mod


for i in range(1, k+1):
    print(comb(n-k+1, i) * comb(k-1, i-1) % mod)


Fixed submission:
n, k = list(map(int, input().split()))
mod = int(1e9 + 7)

a, b = 2000, 2000
dp = [[0 for i in range(b+1)] for j in range(a+1)]
for j in range(b+1):
    dp[0][j] = 0
for i in range(a + 1):
    dp[i][0] = 1

for i in range(1, a+1):
    for j in range(1, b+1):
        dp[i][j] = (dp[i-1][j-1] + dp[i-1][j]) % mod


for i in range(1, k+1):
    print(dp[n-k+1][i] * dp[k-1][i-1] % mod)
Buggy python submission (verdict: Runtime Error):
#https://zoom.us/j/96904363338?pwd=dVhyazRpV29MeWVEMGJRNi9ycmxmZz09
N,M=map(int,input().split())
A=[int(x) for x in input().split()]


loop_all=[1]
num=0
for index,i in enumerate(A,start=0):
    if i not in loop_all:
        loop_all.append(A[num])
        num=A[num]-1

loop_1=[]
tmp1=A[A[len(loop_all)-1]-1]
tmp2=loop_all.index(tmp1)

num1=0
for i in loop_all:
    if num1==tmp2:
        break
    loop_1.append(i)
    num1+=1


loop_2=[]
for i in loop_all[tmp2:]:
    loop_2.append(i)

if M<=len(loop_1)-1:
    print(A[K])
else:
    print(loop_2[ (M-len(loop_1)-1)%len(loop_2)-2])

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

p=1
if k<=n:
  for i in range(k):
    p=a[p-1]
  print(p)
  exit()

t=[-1]*n
t[0]=0
for i in range(1,n):
  p=a[p-1]
  if t[p-1] !=-1:
    break
  t[p-1]=i

d=i-t[p-1]
k-=i
k%=d
for i in range(k):
  p=a[p-1]
print(p)
Buggy python submission (verdict: Time Limit Exceeded):
def main():
    S=input()
    P=2019
    ans=0
    
    count=[0]*P
    count[0]=1
    u=0
    
    for i,s in enumerate(reversed(S)):
        u=(int(s)*pow(10,i)%P+u)%P
        ans+=count[u]
        count[u]+=1
    print(ans)
    

if __name__=="__main__":
    main()

Fixed submission:
def main():
    S=input()
    P=2019
    ans=0
    
    count=[0]*P
    count[0]=1
    u=0
    
    for i,s in enumerate(reversed(S)):
        u=(int(s)*pow(10,i,P)+u)%P
        ans+=count[u]
        count[u]+=1
    print(ans)
    

if __name__=="__main__":
    main()