Harryxun/testdata huggingface dataset:
Buggy python submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
def main():
    N = int(input())
    A = [int(i) for i in input().split()]
    ans = []
    for _ in range(N):
        ans.append(0)
    for i in A:
        ans[A[i]-1]+=1
    for j in ans:
        print(j)
if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    N = int(input())
    A = [int(i) for i in input().split()]
    ans = []
    for _ in range(N):
        ans.append(0)
    for i in A:
        ans[i-1]+=1
    for j in ans:
        print(j)
if __name__ == '__main__':
    main()
Buggy python submission (verdict: Time Limit Exceeded):
    # -*- coding: utf-8 -*-
def main():
    N = int(input())
    D = list(map(int,input().split()))
    ans = 0
    for i in range(N):
        for j in range(i+1,N):
            ans += D[i]^D[j]

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

if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
import numpy as np
def main():
    mod = 10 ** 9 + 7
    N = int(input())
    A = list(map(int, input().split()))
    A = np.array(A, np.int64)
    ans = 0
    for i in range(60):
        bit = np.count_nonzero(A & 1)
        ans += bit * (N - bit) * (2 ** i)
        ans %= mod
        A >>= 1
    print(ans)

if __name__ == '__main__':
    main()
Buggy python submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
def main():
    A,B = int(input())
    if 1=< A < 10 and 1<= B < 10:
        print(A*B)
    else:
        print('-1')

if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    A,B = map(int,input().split())
    if 1 <= A < 10 and 1<= B < 10:
        print(A*B)
    else:
        print('-1')

if __name__ == '__main__':
    main()
Buggy python submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
import math
def main():
    A,B = map(int,input().split())
    C = math.gcd(A,B)
    Cn = prime_factorize(C)
    print(len(Cn)+1)

def prime_factorize(n):
    a = []
    while n % 2 == 0:
        a.append(2)
        n //= 2
    f = 3
    while f * f <= n:
        if n % f == 0:
            a.append(f)
            n //= f
        else:
            f += 2
    if n != 1:
        a.append(n)
    return a

if __name__ == '__main__':
    main()


Fixed submission:
# -*- coding: utf-8 -*-
import fractions

def main():
    A,B = map(int,input().split())
    C = fractions.gcd(A,B)
    Cn = prime_factorize(C)
    Cn = list(set(Cn))
    print(len(Cn)+1)

def prime_factorize(n):
    a = []
    while n % 2 == 0:
        a.append(2)
        n //= 2
    f = 3
    while f * f <= n:
        if n % f == 0:
            a.append(f)
            n //= f
        else:
            f += 2
    if n != 1:
        a.append(n)
    return a

if __name__ == '__main__':
    main()
Buggy python submission (verdict: Time Limit Exceeded):
# -*- coding: utf-8 -*-
def main():
    N,K,Q = map(int,input().split())
    A=[int(input()) for i in range(Q)]
    Ns = []
    for _ in range(N):
        Ns.append(0)
    for i in A:
        Ns[i-1] += 1
    for j in range(N):
        if K<=sum(Ns)-Ns[j]:
            print('No')
        else:
            print('Yes')
if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    N,K,Q = map(int,input().split())
    A=[int(input()) for i in range(Q)]
    Ns=[0 for i in range(N)]
    for i in A:
        Ns[i-1] += 1
    SUM = sum(Ns)
    for j in range(N):
        if K<=SUM-Ns[j]:
            print('No')
        else:
            print('Yes')
if __name__ == '__main__':
    main()
Buggy python submission (verdict: Time Limit Exceeded):
# -*- coding: utf-8 -*-
import math
def main():
    N,M = map(int,input().split())
    A = list(map(int,input().split()))
    for _ in range(M):
        MAX = max(A)
        tmpi = A.index(MAX)
        A[tmpi] = math.floor(A[tmpi]-(MAX/2))
    print(sum(A))
if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
import heapq as hq
def main():
    N,M = map(int,input().split())
    A=[-int(j) for j in input().split()]
    hq.heapify(A)
    for _ in range(M):
        tmp = hq.heappop(A)
        hq.heappush(A,(-((-tmp)//2)))
    print(-sum(A))
if __name__ == '__main__':
    main()

Buggy python submission (verdict: Time Limit Exceeded):
# -*- coding: utf-8 -*-
import math
def main():
    N,M = map(int,input().split())
    A = list(map(int,input().split()))
    for _ in range(M):
        A[A.index(max(A))] = math.floor(A[A.index(max(A))]-(max(A)/2))
    print(sum(A))
if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
import heapq as hq
def main():
    N,M = map(int,input().split())
    A=[-int(j) for j in input().split()]
    hq.heapify(A)
    for _ in range(M):
        tmp = hq.heappop(A)
        hq.heappush(A,(-((-tmp)//2)))
    print(-sum(A))
if __name__ == '__main__':
    main()
Buggy python submission (verdict: Runtime Error):
    # -*- coding: utf-8 -*-
def main():
    N = int(input())
    H = list(map(int,input().split()))
    cnt = 0
    flg = 0
    for i in range(N):
        if cnt >= N-i:
            print(cnt)
            return
        if flg!=0:
            if i==flg:
                flg=0
            else:
                continue
        tmp=0
        for j in range(i,N-1):
            if H[j]>=H[j+1]:
                tmp+=1
            else:
                flg=j+1
                # if cnt >= N-j+1:
                #     print(cnt)
                #     return
                break
        if cnt < tmp:
            cnt=tmp
    print(cnt)


if __name__ == '__main__':
    main()


Fixed submission:
# -*- coding: utf-8 -*-
def main():
    N = int(input())
    print(N*(N-1)//2)
if __name__ == '__main__':
    main()
Buggy python submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
def main():
    A,B = map(int(input().split()))
    ans = []
    ans.append(A+B)
    ans.append(A-B)
    ans.append(A*B)
    print(max(ans))

if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    A,B = map(int,input().split())
    ans = []
    ans.append(A+B)
    ans.append(A-B)
    ans.append(A*B)
    print(max(ans))

if __name__ == '__main__':
    main()
Buggy python submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
def main():
    N = int(input())
    H = list(map(int,input().split()))
    H.reverse()
    for i in range(N):
        if H[i]==H[i+1]:
            continue
        if (H[i+1]-H[i])==1:
            H[i+1]=H[i+1]-1
        else:
            print('No')
    print('Yes')

if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    N = int(input())
    H = list(map(int,input().split()))
    H.reverse()
    for i in range(N):
        if i != N-1:
            if H[i]>=H[i+1]:
                continue
            if (H[i+1]-H[i])==1:
                H[i+1]=H[i+1]-1
            else:
                print('No')
                return
    if H[N-1]<=H[N-2] or (H[N-1]-H[N-2]==1):
        print('Yes')
        return
    else:
        print('No')
        return

if __name__ == '__main__':
    main()
Buggy python submission (verdict: Time Limit Exceeded):
# -*- coding: utf-8 -*-
def main():
    L,R = map(int,input().split())
    LR = R-L
    M = []
    if L <= 2019 <= R:
        print(0)
        exit()
    for i in range(LR):
        for j in range(LR):
            M.append(((L+i)*(L+1+j))%2019)
    print(min(M))
if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    L,R = map(int,input().split())
    LR = R-L
    M = []
    if L <= 2019 <= R:
        print(0)
        exit()
    for i in range(LR):
        for j in range(LR):
            M.append(((L+i)*(L+1+j))%2019)
            if ((L+i)*(L+1+j))%2019 == 0:
                print(0)
                exit()
    print(min(M))
if __name__ == '__main__':
    main()

Buggy python submission (verdict: Time Limit Exceeded):
# -*- coding: utf-8 -*-
def main():
    L,R = map(int,input().split())
    LR = R-L
    M = []
    for i in range(LR):
        for j in range(LR):
            M.append(((L+i)*(L+1+j))%2019)
    print(min(M))
if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    L,R = map(int,input().split())
    LR = R-L
    M = []
    if L <= 2019 <= R:
        print(0)
        exit()
    for i in range(LR):
        for j in range(LR):
            M.append(((L+i)*(L+1+j))%2019)
            if ((L+i)*(L+1+j))%2019 == 0:
                print(0)
                exit()
    print(min(M))
if __name__ == '__main__':
    main()
Buggy python submission (verdict: Time Limit Exceeded):
# -*- coding: utf-8 -*-
def main():
    N = int(input())
    D =[int(i) for i in input().split()]
    count = 0
    D.sort()
    D.reverse()
    #print(D)
    for j in range(100000):
        if j > D[0]:
            break
        for i in range(N):
            if D[i] < j:
                if i == (N/2):
                    count+=1
                else:
                    break
    print(count)
if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    N = int(input())
    D =[int(i) for i in input().split()]
    #count = 0
    D.sort()
    D.reverse()
    center = D[int(N/2)]
    print(D[int((N/2))-1]-center)
if __name__ == '__main__':
    main()

Buggy python submission (verdict: Time Limit Exceeded):
# -*- coding: utf-8 -*-
def main():
    N = int(input())
    D =[int(i) for i in input().split()]
    count = 0
    D.sort()
    D.reverse()
    #print(D)
    for j in range(100000):
        for i in range(N):
            if D[i] < j:
                if i == (N/2):
                    count+=1
                else:
                    break
    print(count)
if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    N = int(input())
    D =[int(i) for i in input().split()]
    #count = 0
    D.sort()
    D.reverse()
    center = D[int(N/2)]
    print(D[int((N/2))-1]-center)
if __name__ == '__main__':
    main()
Buggy python submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
import fractions
def lcm(x, y):
    return (x*y) // fractions.gcd(x, y)
def main():
    A,B,C,D = map(int,input().split())
    E = lcm(C,D)
    Cc = B // C
    Dd = B // D
    Ee = B // E
    flo = A-1
    Cf = flo // C
    Df = flo // D
    Ef = flo // E
    All = B-(Cc+Dd-Ee)
    Sub = flo-(Cf+Df-Ef)
    print(int(All - Sub))
if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    S = list(str(input()))
    #print(S)
    for i in range(len(S)):
        if i == 0:
            t = int(S[0])
            continue
        else:
            t = int(S[i-1])
            #print(t)
            if t == int(S[i]):
                print('Bad')
                return
    print('Good')


if __name__ == '__main__':
    main()

Buggy python submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
import math
def main():
    A,B,C,D = map(int,input().split())
    E = (C*D)//math.gcd(C,D)
    Cc = B / C
    Dd = B / D
    Ee = B / E
    flo = A-1
    Cf = flo / C
    Df = flo / D
    Ef = flo / E
    All = B-(math.floor(Cc)+math.floor(Dd)-math.floor(Ee))
    Sub = flo-(math.floor(Cf)+math.floor(Df)-math.floor(Ef))
    print(All - Sub)
if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    S = list(str(input()))
    #print(S)
    for i in range(len(S)):
        if i == 0:
            t = int(S[0])
            continue
        else:
            t = int(S[i-1])
            #print(t)
            if t == int(S[i]):
                print('Bad')
                return
    print('Good')


if __name__ == '__main__':
    main()
Buggy python submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
import math
def main():
    A,B,C,D = map(int,input().split())
    E = (C * D) // math.gcd(C,D)
    Cc = B / C
    Dd = B / D
    Ee = B / E
    flo = A-1
    Cf = flo / C
    Df = flo / D
    Ef = flo / E
    All = B-(math.floor(Cc)+math.floor(Dd)-math.floor(Ee))
    Sub = flo-(math.floor(Cf)+math.floor(Df)-math.floor(Ef))
    print(All - Sub)
if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
import fractions
def lcm(x, y):
    return (x*y) // fractions.gcd(x, y)
def main():
    A,B,C,D = map(int,input().split())
    E = lcm(C,D)
    Cc = B // C
    Dd = B // D
    Ee = B // E
    flo = A-1
    Cf = flo // C
    Df = flo // D
    Ef = flo // E
    All = B-(Cc+Dd-Ee)
    Sub = flo-(Cf+Df-Ef)
    print(int(All - Sub))
if __name__ == '__main__':
    main()

Buggy python submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
import math
def main():
    A,B,C,D = map(int,input().split())
    E = math.lcm(C*D)
    Cc = B / C
    Dd = B / D
    Ee = B / E
    flo = A-1
    Cf = flo / C
    Df = flo / D
    Ef = flo / E
    All = B-(math.floor(Cc)+math.floor(Dd)-math.floor(Ee))
    Sub = flo-(math.floor(Cf)+math.floor(Df)-math.floor(Ef))
    print(All - Sub)
if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
import fractions
def lcm(x, y):
    return (x*y) // fractions.gcd(x, y)
def main():
    A,B,C,D = map(int,input().split())
    E = lcm(C,D)
    Cc = B // C
    Dd = B // D
    Ee = B // E
    flo = A-1
    Cf = flo // C
    Df = flo // D
    Ef = flo // E
    All = B-(Cc+Dd-Ee)
    Sub = flo-(Cf+Df-Ef)
    print(int(All - Sub))
if __name__ == '__main__':
    main()

Buggy python submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
import math
def main():
    A,B,C,D = map(int,input().split())
    E = math.gcd(C*D)
    Cc = B / C
    Dd = B / D
    Ee = B / E
    flo = A-1
    Cf = flo / C
    Df = flo / D
    Ef = flo / E
    All = B-(math.floor(Cc)+math.floor(Dd)-math.floor(Ee))
    Sub = flo-(math.floor(Cf)+math.floor(Df)-math.floor(Ef))
    print(All - Sub)
if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
import fractions
def lcm(x, y):
    return (x*y) // fractions.gcd(x, y)
def main():
    A,B,C,D = map(int,input().split())
    E = lcm(C,D)
    Cc = B // C
    Dd = B // D
    Ee = B // E
    flo = A-1
    Cf = flo // C
    Df = flo // D
    Ef = flo // E
    All = B-(Cc+Dd-Ee)
    Sub = flo-(Cf+Df-Ef)
    print(int(All - Sub))
if __name__ == '__main__':
    main()
Buggy python submission (verdict: Time Limit Exceeded):
# -*- coding: utf-8 -*-
def main():
    N,M = map(int,input().split())
    A = [int(input()) for _ in range(M)]
    MOD = 1000000007
    ans = [1]
    ans.append(0) if 1 in A else ans.append(1)
    for i in range(2,N+1):
        ans.append(0)
        if i in A:
            continue
        ans[i] += (ans[i-1] + ans[i-2])
    print(ans[N] % MOD)
if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    N,M = map(int,input().split())
    A = set([int(input()) for _ in range(M)])
    MOD = 1000000007
    ans = [1]
    ans.append(0) if 1 in A else ans.append(1)
    for i in range(2,N+1):
        ans.append(0)
        if i in A:
            continue
        ans[i] += (ans[i-1] + ans[i-2])
    print(ans[N] % MOD)
if __name__ == '__main__':
    main()
Buggy python submission (verdict: Time Limit Exceeded):
# -*- coding: utf-8 -*-
def main():
    N,M= map(int,input().split())
    List=[list(map(int,input().split())) for i in range(M)]
    ListN = list()
    List3 = list()
    for k in range(1,N+1):
        ListN.append(k)
    for i in range(M):
        List2 = list()
        x = List[i][0]
        y = List[i][1]
        for j in range(x,y+1):
            List2.append(j)
        for Li in List2:
            for Ln in ListN:
                if Li == Ln:
                    List2.append(Ln)
    List3 = list(set(List2))
    print(len(List3))

if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    N,M = map(int,input().split())
    L = []
    R = []
    for _ in range(M):
        l,r = map(int,input().split())
        L.append(l)
        R.append(r)
    L.sort(reverse=True)
    R.sort()
    lmax = L[0]
    rmin = R[0]
    print(max(0,rmin-lmax+1))



if __name__ == '__main__':
    main()
Buggy python submission (verdict: Time Limit Exceeded):
# -*- coding: utf-8 -*-
from fractions import Fraction
def main():
    N,K = map(int,input().split())
    countlist = []
    answer = 0
    print(N,K)
    for i in range(N):
        count = 0
        while i <= K-1:
            i += i*2
            count +=1
        countlist.append(count)
    print(countlist)
    for j in countlist:
        answer += Fraction(1,N) * Fraction(1,2)**j
    print(answer)

if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    N,K = map(int,input().split())
    ans = 0
    for i in range(1,N+1):
        tmp = i
        n = 0
        while tmp < K:tmp*=2;n+=1
        ans += ((1/N)*(1/2)**n)
    print(ans)

if __name__ == '__main__':
    main()

Buggy python submission (verdict: Time Limit Exceeded):
# -*- coding: utf-8 -*-
from fractions import Fraction
def main():
    N,K = map(int,input().split())
    countlist = []
    answer = 0
    for i in range(N):
        count = 0
        while i <= K-1:
            i = i*2
            count +=1
        countlist.append(count)
    for j in countlist:
        answer += Fraction(1,N) * Fraction(1,2)**j
    print(answer)

if __name__ == '__main__':
    main()

Fixed submission:
# -*- coding: utf-8 -*-
def main():
    N,K = map(int,input().split())
    ans = 0
    for i in range(1,N+1):
        tmp = i
        n = 0
        while tmp < K:tmp*=2;n+=1
        ans += ((1/N)*(1/2)**n)
    print(ans)

if __name__ == '__main__':
    main()
Buggy python submission (verdict: Time Limit Exceeded):
#n₌品物の数
#m=割引券の数
#ans =合計金額

n,m = map(int, input().split())
ans =0
#割引券をY枚使うと、品物をX/2**Y円で変える()小数点はむし
ma =0
#各品物の値段を保管しておくための配列
a = list(map(int, input().split()))

#品物を高いもの順に並び替える
a.sort(reverse=True)

#割引をｍ回繰り返す
for i in range(m):
    ma =a[0]
    ma = int(ma/2)
    a[0] = ma
    if(ma == 0):
        break
    a.sort(reverse =True)
    
ans = int(sum(a))
print(ans)
        

Fixed submission:
import heapq

n,m = map(int, input().split())
a=[-int(x) for x in input().split()]
heapq.heapify(a)

#heappopは最小の値（一番上のノードの値を返す)
for _ in range(m):
    tmp = int(heapq.heappop(a)/2)
    #新しい値(2で割った値)を挿入してヒープを保つ)
    heapq.heappush(a,tmp)

print(-sum(a))

Buggy python submission (verdict: Time Limit Exceeded):
#n₌品物の数
#m=割引券の数
#ans =合計金額

n,m = map(int, input().split())
ans =0
#割引券をY枚使うと、品物をX/2**Y円で変える()小数点はむし
ma =0
#各品物の値段を保管しておくための配列
a = list(map(int, input().split()))

#品物を高いもの順に並び替える
a.sort(reverse=True)

#割引をｍ回繰り返す
for i in range(m):
    ma =a[0]
    ma = int(ma/2)
    a[0] = ma
    a.sort(reverse =True)
ans = int(sum(a))
print(ans)
        




Fixed submission:
import heapq

n,m = map(int, input().split())
a=[-int(x) for x in input().split()]
heapq.heapify(a)

#heappopは最小の値（一番上のノードの値を返す)
for _ in range(m):
    tmp = int(heapq.heappop(a)/2)
    #新しい値(2で割った値)を挿入してヒープを保つ)
    heapq.heappush(a,tmp)

print(-sum(a))
Buggy python submission (verdict: Runtime Error):
n,d =map(int, input().split())
L=[]
for i in range(n):
    L.append(list(map(int, input().split())))
ans =0

for i in range(n):
    for j in range(i+1,n):
        dis=0
        for k in range(d):
            dis = (L[i][k]-L[j][k])**2
        dis = dis**0.5
        if(dis == int(dis):
            ans +=1
print(ans)

Fixed submission:
n,d =map(int, input().split())
L=[]
for i in range(n):
    L.append(list(map(int, input().split())))
ans =0

for i in range(n):
    for j in range(i+1,n):
        dis=0
        for k in range(d):
            dis += (L[i][k]-L[j][k])**2
        dis = dis**0.5
        if dis % 1.0 ==0:
            ans +=1
print(ans)
Buggy python submission (verdict: Runtime Error):
oukei=0 
count=1

N,X =map(int, input().split())
L= list(map(int, input().split()))
    

for i in range(N):
    goukei +=L[i]
    
    if(goukei>X):
        break
    else:
        count +=1
        
print(count)

Fixed submission:
goukei=0 
count=1

N,X =map(int, input().split())
L= list(map(int, input().split()))
    

for i in range(N):
    goukei +=L[i]
    
    if(goukei>X):
        break
    else:
        count +=1
        
print(count)

Buggy python submission (verdict: Runtime Error):
oukei=0 
count=1

N,X =map(int, input().split())
L= list(map(int, input().split()))
    

for i in range(N-1):
    goukei +=L[i]
    
    if(goukei>X):
        break
    else:
        count +=1
        
print(count)

Fixed submission:
goukei=0 
count=1

N,X =map(int, input().split())
L= list(map(int, input().split()))
    

for i in range(N):
    goukei +=L[i]
    
    if(goukei>X):
        break
    else:
        count +=1
        
print(count)
Buggy python submission (verdict: Runtime Error):
n = int(input())
a = list(map(int, input().split()))
ans = 0

a.sort(reverse=True)
a_sum = sum(a[0:len(a):2])
b_sum = sum(a[1:len(a):2])

ans = a_sum-b_sum

print(ans)

Fixed submission:
n,k =map(int, input().split())
l =list(map(int, input().split()))
ans =0

l.sort(reverse=True)
for i in range(k):
    ans += l[i]
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
a = list(map(int, input().split()))
a.sort()
ans = int(0)
#一番チームで最弱のやつを取り出す
for i in range(n):
   ans = sum(a[n:3*n:2])
print(ans)
    

Fixed submission:
n = int(input())
a = list(map(int, input().split()))
a.sort()
ans = int(0)
#一番チームで最弱のやつを取り出す

ans = sum(a[n:3*n:2])
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
a,b, x = map(int, input().split())
count =0
for i in range(a,b+1):
    if( i%x  ==0):
        count +=1
print(count)

Fixed submission:
a,b,x = map(int, input().split())
#切り捨て
a_num = (a-1) //x
b_num = b // x

ans =b_num-a_num
print(ans)
Buggy python submission (verdict: Runtime Error):
s = list(input())
ans_list=[]
for i in range(len(s)):
    if(s[i] == "0"):
        ans_list.append("0")
    elif(s[i] == "1"):
        ans_list.append("1")
    elif(s[i] == "B"):
        if(ans_list != 0):
            ans_list.pop()
        else:
            continue
for i in range(len(ans_list)):
    print(ans_list[i],end='')



Fixed submission:
s = list(input())
ans_list=[]
for i in range(len(s)):
    if(s[i] == "0"):
        ans_list.append("0")
    elif(s[i] == "1"):
        ans_list.append("1")
    elif(s[i] == "B"):
        if(len(ans_list) != 0):
            ans_list.pop()
        else:
            continue
for i in range(len(ans_list)):
    print(ans_list[i],end='')
Buggy python submission (verdict: Runtime Error):
import itertools
n, k = map(int, input().split())
d = []
a = []
n_1=[i for i in range(1,n+1)]
for i in range(k):
    d.append(int(input()))
    a.append(list(map(int,input().split())))
a_1 = list(itertools.chain.from_iterable(a))
c=list(set(n_1)-set(a_1))
if len(c)>1:
  c=' '.join(c)
  print(c)
else:
  print(c[0])
  

Fixed submission:
import itertools
n, k = map(int, input().split())
d = []
a = []
n_1=[i for i in range(1,n+1)]
for i in range(k):
    d.append(int(input()))
    a.append(list(map(int,input().split())))
a_1 = list(itertools.chain.from_iterable(a))
c=list(set(n_1)-set(a_1))
print(len(c))

Buggy python submission (verdict: Runtime Error):
N, K = map(int, input().split())
d = []
A = []
ListN=[]
for i in range(1, N+1):
  ListN.append(i) 
setN = set(ListN) 

for i in range(K):
  d.append(input())
  A.append(list(map(int, input().split())))

for i in range(K-1):
  setA = set(A[i]) | set(A[i+1])



print(len(setA^setN))


Fixed submission:
N, K = map(int, input().split())
d = []
A = []
setA = set(A)
ListN=[]
for i in range(1, N+1):
  ListN.append(i) 
setN = set(ListN) 

for i in range(K):
  d.append(input())
  setA = setA | set(list(map(int, input().split())))

print(len(setA^setN))