Harryxun/testdata huggingface dataset:
Buggy python submission (verdict: Runtime Error):
N,K = map(int,input().split())
A = list(map(int, input().split()))


#一回あたりのループを計算（何回で戻ってくるか）
#ループの箇所を見つける
trace = [0]*N
loop_start = 0
loop_before = 0
cnt = 0
all_cnt = 0

if K > N:
    loop = 0
    now = 0
    while(1):
        # print(trace)
        trace[now] += 1
        if trace[now] == 3:
            break
        if trace[now] == 2:
            cnt += 1
            loop += 1 
            if cnt == 1: 
                loop_start = now
                loop_before = all_cnt
        now = A[now]-1
        all_cnt += 1

loop_before = loop_before - loop 

# print(loop)
# print(loop_start)
# print(loop_before)
# print(loop)
min_K = (K-1-loop_before) % loop
# print(min_K)
# print(loop_before)
now = 0
for i in range(loop_before):
    now = A[now]-1
for i in range(min_K):
    now = A[now]-1
print(A[now])

# print(K % 3)

# print(now+1)




    

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


#一回あたりのループを計算（何回で戻ってくるか）
#ループの箇所を見つける
trace = [0]*N
loop_start = 0
loop_before = 0
cnt = 0
all_cnt = 0

if K > N:
    loop = 0
    now = 0
    while(1):
        # print(trace)
        trace[now] += 1
        if trace[now] == 3:
            break
        if trace[now] == 2:
            cnt += 1
            loop += 1 
            if cnt == 1: 
                loop_start = now
                loop_before = all_cnt
        now = A[now]-1
        all_cnt += 1

    loop_before = loop_before - loop 

    # print(loop)
    # print(loop_start)
    # print(loop_before)
    # print(loop)
    min_K = (K-1-loop_before) % loop
    # print(min_K)
    # print(loop_before)
    now = 0
    for i in range(loop_before):
        now = A[now]-1
    for i in range(min_K):
        now = A[now]-1
    print(A[now])

if K <= N:
    now = 0
    for i in range(K-1):
        now = A[now]-1
    print(A[now])


# print(K % 3)

# print(now+1)
Buggy python submission (verdict: Runtime Error):
X = int(input())

for b in range(-100,100):
    is_minus = False
    if (X + b**5) < 0 : is_minus = True
    result = abs((X + b**5))**(1/5)

    if type(result) is complex:
        continue
    if result - round(result) == 0:
        if is_minus:
            ans_a,ans_b = -b,-round(result)
        else:
            ans_a,ans_b = abs(b),-round(result)


print(ans_a,ans_b)
    

Fixed submission:
X = int(input())

for a in range(-120,120):
    for b in range(-120,120):
        if a**5 - b**5 == X:
            ans_a,ans_b = a,b
            break


print(ans_a,ans_b)

Buggy python submission (verdict: Runtime Error):
X = int(input())

for b in range(-100,100):
    result = (X + b**5)**(1/5).real
    if type(result) is complex:
        continue
    if result - round(result) == 0:
        ans_a,ans_b = b,round(result)


print(ans_a,ans_b)
    

Fixed submission:
X = int(input())

for a in range(-120,120):
    for b in range(-120,120):
        if a**5 - b**5 == X:
            ans_a,ans_b = a,b
            break


print(ans_a,ans_b)
Buggy python submission (verdict: Runtime Error):
N, M, Q = map(int, input().split())
tmp = [list(map(int, input().split())) for i in range(Q)]


#最初に全てのAペアを作ればいいだけだった
#1stepで何するか
#終了条件
ans = [0]
def dfs(A):
    if len(A) == N:
        tmp_ans = 0
        for ele in tmp
            if ele[1] - ele[0] == ele[2]:
                tmp_ans += ele[-1]
        ans[0] = max(tmp_ans,ans[0])

        return
    
    A_min = A[-1]
    while(1):
        if A_min > M:
            break
        A.append(A_min)
        dfs(A)
        A.pop()
        A_min += 1

for i in range(M):
    dfs([i+1])

print(ans[0])



Fixed submission:
N, M, Q = map(int, input().split())
tmp = [list(map(int, input().split())) for i in range(Q)]


#最初に全てのAペアを作ればいいだけだった
#1stepで何するか
#終了条件
ans = [0]
def dfs(A):
    # print(A)
    if len(A) == N:
        tmp_ans = 0
        for ele in tmp:
            if A[ele[1]-1] - A[ele[0]-1] == ele[2]:
                tmp_ans += ele[-1]
        ans[0] = max(tmp_ans,ans[0])

        return
    
    A_min = A[-1]
    while(1):
        if A_min > M:
            break
        A.append(A_min)
        dfs(A)
        A.pop()
        A_min += 1

for i in range(M):
    dfs([i+1])

print(ans[0])

Buggy python submission (verdict: Runtime Error):
N, M, Q = map(int, input().split())
tmp = [list(map(int, input().split())) for i in range(Q)]


#最初に全てのAペアを作ればいいだけだった
#1stepで何するか
#終了条件
ans = [0]
def dfs(A):
    if len(A) == N:
        tmp_ans = 0
        for ele in tmp
            if ele[1] - ele[0] == ele[2]:
                tmp_ans += ele[-1]
        ans[0] = max(tmp_ans,ans[0])

        return
    
    A_min = A[-1]
    while(1):
        if A_min > M:
            break
        A.append(A_min)
        dfs(A)
        A.pop()
        A_min += 1

for i in range(M):
    dfs([i+1])

print(ans[0])



Fixed submission:
N, M, Q = map(int, input().split())
tmp = [list(map(int, input().split())) for i in range(Q)]


#最初に全てのAペアを作ればいいだけだった
#1stepで何するか
#終了条件
ans = [0]
def dfs(A):
    # print(A)
    if len(A) == N:
        tmp_ans = 0
        for ele in tmp:
            if A[ele[1]-1] - A[ele[0]-1] == ele[2]:
                tmp_ans += ele[-1]
        ans[0] = max(tmp_ans,ans[0])

        return
    
    A_min = A[-1]
    while(1):
        if A_min > M:
            break
        A.append(A_min)
        dfs(A)
        A.pop()
        A_min += 1

for i in range(M):
    dfs([i+1])

print(ans[0])
Buggy python submission (verdict: Runtime Error):
N,M= map(int, input().split())

stack = list(range(1,N+1))
stack.reverse()

ans = []
for i in range(M):
    # print(stack)
    now = stack.pop()
    cand = now+i+1
    # cand = now+i+1 if now + i + 1 >N else now+i+1-N
    if N - cand + 1== cand - now:
        now = cand
        cand = now+i+1

    # pair = stack.pop(cand)
    stack.remove(cand)
    pair = cand
    
    # print(cand)
    # print("a")
    ans.append([now,pair])

for an in ans:
    print(an[0],an[1])

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

num = list(range(1,N+1))
ans = []


if M % 2 == 0:
    for i in range(M // 2):
        ans.append([i+1,M+1-i])
    for i in range(M // 2):
        ans.append([i+2+M,2*M+1-i])


if M % 2 != 0:
    for i in range(M // 2):
        ans.append([i+1,M-i])
    for i in range(M - M//2):
        ans.append([i+1+M,2*M+1-i])


for an in ans:
    print(an[0],an[1])
Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
S = input()

from collections import defaultdict

memo = [defaultdict(int) for j in range(N+1)]

ans = 0



for i,s in enumerate(S):
    memo[i+1]["R"] = memo[i]["R"]
    memo[i+1]["G"] = memo[i]["G"]
    memo[i+1]["B"] = memo[i]["B"]
    memo[i+1][s]+=1
    others = set(["R","G","B"])
    others.remove(s)
    others = list(others)
    ans += memo[i+1][others[0]] * memo[i+1][others[1]]

rgb = set(["R","G","B"])
# print(rgb)

if N > 2:
    if N %2 == 1:
        length = N // 2
    else:
        length = N // 2 - 1

    # print(length)
    
    for skip in range(length):
        for i in range(len(S)):
            # print(i)
            if i+2+skip*2 > len(S)-1:

                break
            a,b,c = S[i],S[i+1+skip],S[i+2+skip*2]
            # print(set([a,b,c]))
            if set([a,b,c]) == rgb:
                ans -= 1
        

print(ans)


Fixed submission:
N = int(input())
S = input()

from collections import defaultdict

memo = [defaultdict(int) for j in range(N+1)]

ans = 0



for i,s in enumerate(S):
    memo[i+1]["R"] = memo[i]["R"]
    memo[i+1]["G"] = memo[i]["G"]
    memo[i+1]["B"] = memo[i]["B"]
    memo[i+1][s]+=1
    others = set(["R","G","B"])
    others.remove(s)
    others = list(others)
    ans += memo[i+1][others[0]] * memo[i+1][others[1]]

rgb = set(["R","G","B"])
# print(rgb)

if N > 2:
    if N %2 == 1:
        length = N // 2
    else:
        length = N // 2 - 1

    # print(length)
    
    for skip in range(length):
        for i in range(len(S)):
            # print(i)
            if i+2+skip*2 > len(S)-1:

                break
            a,b,c = S[i],S[i+1+skip],S[i+2+skip*2]
            # print(set([a,b,c]))
            if set([a,b,c]) == rgb:
                ans -= 1
        

print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
N=int(input())
A = [int(input()) for i in range(N)]
import bisect



mina = [A[0]]

# print(mina)
# ans = 
for i in range(1,N):
    # print(mina)
    if mina[0]>=A[i]:
        ind = bisect.bisect_left(mina,A[i])
        mina.insert(ind,A[i])
        # ans +=1 
    else:
        ind = bisect.bisect_left(mina,A[i])
        # mina.insert(ind,A[i])
        mina[ind-1]=A[i]
        # if ind == len(mina)-1:
            
        #     del(mina[-2])
        # else:
        #     # print("a")
        #     del(mina[ind-1])


# print(mina)
    
print(len(mina))


Fixed submission:
N = int(input())
A = [int(input()) for i in range(N)]

import bisect

bilist = [A[0]]
ans = 0

for a in A[1:]:
    index = bisect.bisect_left(bilist,a)
    if index == 0:
        bisect.insort_left(bilist,a)
    else:
        bilist[index-1] = a


print(len(bilist))

Buggy python submission (verdict: Time Limit Exceeded):
N=int(input())
A = [int(input()) for i in range(N)]
import bisect



mina = [A[0]]

# print(mina)
# ans = 
for i in range(1,N):
    # print(mina)
    if mina[0]>=A[i]:
        ind = bisect.bisect_left(mina,A[i])
        mina.insert(ind,A[i])
        # ans +=1 
    else:
        ind = bisect.bisect_left(mina,A[i])
        mina.insert(ind,A[i])
        if ind == len(mina)-1:
            
            del(mina[-2])
        else:
            # print("a")
            del(mina[ind-1])


# print(mina)
    
print(len(mina))


Fixed submission:
N = int(input())
A = [int(input()) for i in range(N)]

import bisect

bilist = [A[0]]
ans = 0

for a in A[1:]:
    index = bisect.bisect_left(bilist,a)
    if index == 0:
        bisect.insort_left(bilist,a)
    else:
        bilist[index-1] = a


print(len(bilist))

Buggy python submission (verdict: Time Limit Exceeded):
N=int(input())
A = [int(input()) for i in range(N)]
import bisect



mina = [A[0]]

# print(mina)
# ans = 
for i in range(1,N):
    # print(mina)
    if mina[0]>=A[i]:
        ind = bisect.bisect_left(mina,A[i])
        mina.insert(ind,A[i])
        # ans +=1 
    else:
        ind = bisect.bisect_left(mina,A[i])
        mina.insert(ind,A[i])
        if ind == len(mina)-1:
            
            del(mina[-2])
        else:
            # print("a")
            del(mina[ind-1])


# print(mina)
    
print(len(mina))


Fixed submission:
N = int(input())
A = [int(input()) for i in range(N)]

import bisect

bilist = [A[0]]
ans = 0

for a in A[1:]:
    index = bisect.bisect_left(bilist,a)
    if index == 0:
        bisect.insort_left(bilist,a)
    else:
        bilist[index-1] = a


print(len(bilist))
Buggy python submission (verdict: Runtime Error):
N,K= map(int,input().split())
import math
import itertools

f = 1
if math.factorial(N-1) < K:
    f = 0

if f == 0:
    print(-1)

if f!=0:
    ans_list = []
    kumi = list(itertools.permutations(range(2,N+1), 2))
    # ans_list.append(kumi)
    for i in range(2,N+1):
        ans_list.append((1,i))
    for i in range(0,K):
        ans_list.append(kumi[i])
    
    print(len(ans_list))
    for i in range(len(ans_list)):
        print(ans_list[i][0],ans_list[i][1])

Fixed submission:
N,K= map(int,input().split())
import math
import itertools

f = 1

if len(list(itertools.combinations(range(1,N),2))) < K:
    f = 0

if f == 0:
    print(-1)

if f!=0:
    ans_list = []
    kumi = list(itertools.combinations(range(2,N+1), 2))
    kumilen = len(kumi)
    # ans_list.append(kumi)
    for i in range(2,N+1):
        ans_list.append((1,i))
    for i in range(0,kumilen-K):
        ans_list.append(kumi[i])
    
    print(len(ans_list))
    for i in range(len(ans_list)):
        print(ans_list[i][0],ans_list[i][1])
Buggy python submission (verdict: Time Limit Exceeded):
n,m= map(int,input().split())
lr = [0]*m
import numpy as np
for i in range(m):
    lr[i]=list(map(int, input().split()))

#1~10**5
# print(10**5)
allcount = np.zeros(10**5,dtype=np.int)
# print(allcount)
for i in range(m):
    st = lr[i][0]-1
    g = lr[i][1]
    allcount=np.hstack((allcount[:st],allcount[st:g]+1,allcount[g:]))

# print(allcount)

allcount = list(allcount)
print(allcount.count(m))


    



Fixed submission:
n,m= map(int,input().split())
lr = [0]*m
for i in range(m):
    lr[i]=list(map(int, input().split()))


left = lr[0][0]
right = lr[0][1]
for i in range(1,m):
    if left < lr[i][0]:
        left = lr[i][0]
    if right > lr[i][1]:
        right = lr[i][1]
    
    if left > right:
        break




if left > right:
    print(0)

if left <= right:
    print(right-left+1)
Buggy python submission (verdict: Runtime Error):
N,M= map(int,input().split())

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

bc = [0]*M

for i in range(M):
    bc[i]=list(map(int, input().split()))


a.sort()
bc.sort(key=lambda x:-x[1])

# print(a)
# print(bc)
# ans = sum(a)
pre_ind = 0
now_ind = 0
for i in range(M):
    key = bc[i][0]
    value = bc[i][1]
    now_ind += key

    if value > a[now_ind-1]:
        a=a[:pre_ind]+[value]*key + a[now_ind:]
        pre_ind = now_ind


    else:
        max_count = key
        # print(key)
        key2 = key
        for j in range(key):
            now_ind -= 1
            key2 -= 1
            if value > a[now_ind-1]:
                a=a[:pre_ind]+[value]*key2 + a[now_ind:]
                # print(key2)
                break
        break

# print(a)

print(sum(a))













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

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

bc = [0]*M

for i in range(M):
    bc[i]=list(map(int, input().split()))


a.sort()
bc.sort(key=lambda x:-x[1])

# print(a)
# print(bc)
ans = sum(a)
pre_ind = 0
now_ind = 0
for i in range(M):
    key = bc[i][0]
    value = bc[i][1]
    now_ind += key
    if now_ind > N:
        now_ind = N

    if value > a[now_ind-1]:
        ans += value*(now_ind-pre_ind)-sum(a[pre_ind:now_ind])
        # a=a[:pre_ind]+[value]*(now_ind-pre_ind)+ a[now_ind:]
        pre_ind = now_ind
        if now_ind == N:
            # print("ok")
            break
    else:
        max_count = key
        # print(key)
        key2 = key
        for j in range(key-1):
            now_ind -= 1
            key2 -= 1
            if value > a[now_ind-1]:
                # a=a[:pre_ind]+[value]*(now_ind-pre_ind) + a[now_ind:]
                ans += value*(now_ind-pre_ind)-sum(a[pre_ind:now_ind])
                # print(key2)
                break
        break

# print(a)

# print(sum(a))
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
R,G,B,N= map(int,input().split())

cnt = 0

a = 3000//R
b = 3000//G
c = 3000//B
for i in range(0,a+1):
    for j in range(0,b + 1):
        if(R*i+G*j)<=N and (N-R*i - G*j )%B==0:

            cnt += 1
            # print(cnt)
        # if(R*i + G*j) < == N:
        #     cnt += (N-R*i + G*j )//B
        # # for k in range(0,c + 1):
        #     # if (R*i + G*j + B * k) == N:
        #     #     cnt += 1


print(cnt)


Fixed submission:
R,G,B,N= map(int,input().split())

cnt = 0

a = 3000//R


for i in range(0,a+1):
    b = (3000-R*i)//G
    for j in range(0,b + 1):
        if(R*i+G*j)<=N and (N-R*i - G*j )%B==0:

            cnt += 1
            # print(cnt)
        # if(R*i + G*j) < == N:
        #     cnt += (N-R*i + G*j )//B
        # # for k in range(0,c + 1):
        #     # if (R*i + G*j + B * k) == N:
        #     #     cnt += 1


print(cnt)
Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = list(map(int, input().split())) 

import fractions
import copy
from functools import reduce

ans = 1

def gcd_list(numbers):
    return reduce(fractions.gcd, numbers)

for i in range(N):
    A_sub = copy.deepcopy(A)
    del(A_sub[i])
    ans_sub = gcd_list(A_sub)
    if ans < ans_sub:
        ans = ans_sub

print(ans)

Fixed submission:
N = int(input())
A = list(map(int, input().split())) 
import fractions


#累積GCD
L = [0]*(N+2)
R = [0]*(N+2)
for i in range(N):
    L[i+1] = fractions.gcd(L[i],A[i])
    R[i+1] = fractions.gcd(R[i],A[N-i-1])

M = []

# print(L,R)

for i in range(N):
    ans = fractions.gcd(L[i],R[N-i-1])
    M.append(ans)

print(max(M))

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

import fractions
import copy
from functools import reduce

ans = 1

def gcd_list(numbers):
    return reduce(fractions.gcd, numbers)

for i in range(N):
    A_sub = copy.deepcopy(A)
    del(A_sub[i])
    ans_sub = gcd_list(A_sub)
    if ans < ans_sub:
        ans = ans_sub

print(ans)

Fixed submission:
N = int(input())
A = list(map(int, input().split())) 
import fractions


#累積GCD
L = [0]*(N+2)
R = [0]*(N+2)
for i in range(N):
    L[i+1] = fractions.gcd(L[i],A[i])
    R[i+1] = fractions.gcd(R[i],A[N-i-1])

M = []

# print(L,R)

for i in range(N):
    ans = fractions.gcd(L[i],R[N-i-1])
    M.append(ans)

print(max(M))

Buggy python submission (verdict: Runtime Error):
N = int(input())
A = list(map(int, input().split())) 

import copy

import math
from functools import reduce

ans = 1

def gcd_list(numbers):
    return reduce(math.gcd, numbers)

for i in range(N):
    A_sub = copy.deepcopy(A)
    del(A_sub[i])
    ans_sub = gcd_list(A_sub)
    if ans < ans_sub:
        ans = ans_sub

print(ans)


Fixed submission:
N = int(input())
A = list(map(int, input().split())) 
import fractions


#累積GCD
L = [0]*(N+2)
R = [0]*(N+2)
for i in range(N):
    L[i+1] = fractions.gcd(L[i],A[i])
    R[i+1] = fractions.gcd(R[i],A[N-i-1])

M = []

# print(L,R)

for i in range(N):
    ans = fractions.gcd(L[i],R[N-i-1])
    M.append(ans)

print(max(M))
Buggy python submission (verdict: Runtime Error):
def solve(b):
    u = []
    lenu = []
    p = ''
    for i in range(len(b)):
        if (b[i]=='A')or(b[i]=='T')or(b[i]=='G')or(b[i]=='C'):
            p += b[i]
        else:
            u.append(p)
            lenu.append(len(p))
            p=p.replace(p,'')
    
    
    # print(u,lenu)
    print(max(lenu))


 
 
def main():
    b = input()
    solve(b)
 
 
if __name__ == '__main__':
    main()

Fixed submission:
def solve(b):
    u = []
    lenu = []
    p = ''
    for i in range(len(b)):
        if (b[i]=='A')or(b[i]=='T')or(b[i]=='G')or(b[i]=='C'):
            p += b[i]
        else:
            u.append(p)
            lenu.append(len(p))
            p=p.replace(p,'')
    u.append(p)
    lenu.append(len(p))
    
    
    
    # print(u,lenu)

    print(max(lenu))


 
 
def main():
    b = input()
    solve(b)
 
 
if __name__ == '__main__':
    main()
Buggy python submission (verdict: Time Limit Exceeded):
def solve(lr,N,Q,S):
    answer = []
    for i in range(Q):
        answer.append(S[int(lr[i][0])-1:int(lr[i][1])].count('AC'))
    for i in range(Q):
        print(answer[i])

 
def main():
    N,Q= map(int,input().split())
    S = input()
    lr = [0]*Q
    for i in range(Q):
        lr[i]=input().rstrip().split()
    # S = 'ACACTACG'
    # N = 8
    # Q = 3
    # lr = [['3', '7'], ['2', '3'], ['1', '8']]
    solve(lr,N,Q,S)
 
 
if __name__ == '__main__':
    main()

Fixed submission:
def solve(lr,N,Q,S):
    #ACの総数をindex0~N-1まで全てだす
    count = [0]*N
    sum = 0
    for i in range(1,N):
       
        if S[i-1]=='A' and S[i]=='C':
            sum += 1
            count[i] = sum
        else:
            count[i] = sum

    # print(count)
    
    for i in range(Q):
        # print(int(lr[i][1]),int(lr[i][0]))
        print(count[int(lr[i][1])-1]-count[int(lr[i][0])-1])
    #     # print(S[int(lr[i][0])-1:int(lr[i][1])].count('AC'))



 
def main():
    N,Q= map(int,input().split())
    S = input()
    lr = [0]*Q
    for i in range(Q):
        lr[i]=input().rstrip().split()
    # S = 'ACACTACG'
    # N = 8
    # Q = 3
    # lr = [['3', '7'], ['2', '3'], ['1', '8']]
    solve(lr,N,Q,S)
 
 
if __name__ == '__main__':
    main()
Buggy python submission (verdict: Time Limit Exceeded):
A,B = map(int,input().split())
 
 
C = A
# print(bin(A),A)
for i in range(A+1,B+1):
    C = C ^ i
    # print(bin(i),i)
    # print(C)
#4周期で打ち消される
#4周期のどの段階に相当するかを判別し変換する関数
def f(x):
    if x % 4 == 0:
        return x^(x+1)^(x+2)^(x+3)
    elif x % 4 == 1:
        return x^(x+1)^(x+2)
    elif x % 4 == 2:
        return x^(x+1)
    else:
        return x

def g(x):
    if x % 4 == 4:
        return x^(x+1)^(x+2)^(x+3)
    elif x % 4 == 3:
        return x^(x+1)^(x+2)
    elif x % 4 == 2:
        return x^(x+1)
    else:
        return x


print(f(A)^g(B))



Fixed submission:
A,B = map(int,input().split())

def f(x):
    if x % 4 == 0:
        return x ^ 0
    elif x % 4 == 1:
        return 1
    elif x % 4 == 2:
        return 1 ^ x
    else:
        return 0


if A==0:
    print(f(B))
else:
    print(f(A-1) ^ f(B))

Buggy python submission (verdict: Time Limit Exceeded):
A,B = map(int,input().split())


C = A
for i in range(A+1,B+1):
    C = C ^ i

print(C)

Fixed submission:
A,B = map(int,input().split())

def f(x):
    if x % 4 == 0:
        return x ^ 0
    elif x % 4 == 1:
        return 1
    elif x % 4 == 2:
        return 1 ^ x
    else:
        return 0


if A==0:
    print(f(B))
else:
    print(f(A-1) ^ f(B))

Buggy python submission (verdict: Time Limit Exceeded):
A,B = map(int,input().split())


C = A
for i in range(A+1,B+1):
    C = C ^ i

print(C)

Fixed submission:
A,B = map(int,input().split())

def f(x):
    if x % 4 == 0:
        return x ^ 0
    elif x % 4 == 1:
        return 1
    elif x % 4 == 2:
        return 1 ^ x
    else:
        return 0


if A==0:
    print(f(B))
else:
    print(f(A-1) ^ f(B))
Buggy python submission (verdict: Time Limit Exceeded):
import copy

s = input()
s_sub = copy.deepcopy(s)
# 
tar1 = "01"
tar2 = "10"
# tar3 = ["1010","1001","0101","0110"]

while((tar1 in s )or(tar2 in s)):
    
    
    # for i in range(4):
    #     if tar3[i] in s:
    #         s = s.replace(tar3[i],"")
    

    if tar1 in s:
        s = s.replace(tar1,"",1)
    if tar2 in s:
        s = s.replace(tar2,"",1)



print(len(s_sub)-len(s))

Fixed submission:
import copy

s = input()
s_sub = copy.deepcopy(s)
# # 
# tar1 = "01"
# tar2 = "10"
# tar3 = ["1010","1001","0101","0110","1100","0011",""]
# 
# while((tar1 in s )or(tar2 in s)):
# 
# 
#     # for i in range(4):
#     #     if tar3[i] in s:
#     #         s = s.replace(tar3[i],"")
# 
# 
#     if tar1 in s:
#         s = s.replace(tar1,"",1)
#     if tar2 in s:
#         s = s.replace(tar2,"",1)
# 
# 
# 
# print(len(s_sub)-len(s))

#0と1の数数えて差分が残るのでは？
l1 = s.count("0")
l2 = s.count("1")
l3 = abs(l1-l2)

print(len(s_sub)-l3)

Buggy python submission (verdict: Time Limit Exceeded):
import copy

s = input()
s_sub = copy.deepcopy(s)

tar1 = "01"
tar2 = "10"
tar3 = ["1010","1001","0101","0110"]

while((tar1 in s )or(tar2 in s)):
    for i in range(4):
        if tar3[i] in s:
            s = s.replace(tar3[i],"")
            
    if tar1 in s:
        s = s.replace(tar1,"")
    if tar2 in s:
        s = s.replace(tar2,"")



print(len(s_sub)-len(s))


Fixed submission:
import copy

s = input()
s_sub = copy.deepcopy(s)
# # 
# tar1 = "01"
# tar2 = "10"
# tar3 = ["1010","1001","0101","0110","1100","0011",""]
# 
# while((tar1 in s )or(tar2 in s)):
# 
# 
#     # for i in range(4):
#     #     if tar3[i] in s:
#     #         s = s.replace(tar3[i],"")
# 
# 
#     if tar1 in s:
#         s = s.replace(tar1,"",1)
#     if tar2 in s:
#         s = s.replace(tar2,"",1)
# 
# 
# 
# print(len(s_sub)-len(s))

#0と1の数数えて差分が残るのでは？
l1 = s.count("0")
l2 = s.count("1")
l3 = abs(l1-l2)

print(len(s_sub)-l3)

Buggy python submission (verdict: Time Limit Exceeded):
import copy

s = input()
s_sub = copy.deepcopy(s)

tar1 = "01"
tar2 = "10"

while((tar1 in s )or(tar2 in s)):
    if tar1 in s:
        s = s.replace(tar1,"")
    if tar2 in s:
        s = s.replace(tar2,"")



print(len(s_sub)-len(s))


Fixed submission:
import copy

s = input()
s_sub = copy.deepcopy(s)
# # 
# tar1 = "01"
# tar2 = "10"
# tar3 = ["1010","1001","0101","0110","1100","0011",""]
# 
# while((tar1 in s )or(tar2 in s)):
# 
# 
#     # for i in range(4):
#     #     if tar3[i] in s:
#     #         s = s.replace(tar3[i],"")
# 
# 
#     if tar1 in s:
#         s = s.replace(tar1,"",1)
#     if tar2 in s:
#         s = s.replace(tar2,"",1)
# 
# 
# 
# print(len(s_sub)-len(s))

#0と1の数数えて差分が残るのでは？
l1 = s.count("0")
l2 = s.count("1")
l3 = abs(l1-l2)

print(len(s_sub)-l3)