Buggy python submission (verdict: Time Limit Exceeded):
def main():
    from bisect import bisect_right as br
    import numpy as np
    n = int(input())
    a = np.array(list(map(int, input().split())))
    b = np.array(list(map(int, input().split())))
    #n = 100000
    #a = np.array([i+1 for i in range(n)])
    #b = np.array([2*i+2 for i in range(n)])
    a = np.sort(a)
    b = np.sort(b[::-1])
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    b = pow(2, 28) - b
    ans = 0
    for loop in range(28, -1, -1):
        j = pow(2, loop)
        k = (xor & j) // j
        temp = br(b, j-1)
        b[temp:] -= j
        b = np.sort(b)
        temp = br(a, j-1)
        k += np.sum((a & j) // j)
        a[temp:] -= j
        x = (k+br(b, 0))*m % 2
        a = np.sort(a)
        l = 0
        for i in a:
            while l < n:
                if i >= b[l]:
                    l += 1
                else:
                    break
            x += l % 2
        ans += (x % 2)*j
    print(ans)


main()


Fixed submission:
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())), reverse=True)
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    for i in range(n):
        b[i] = 2**28 - b[i]
    ans = 0
    for loop in range(28, -1, -1):
        j = pow(2, loop)
        k = (xor & j) // j
        temp = br(b, j-1)
        for i in range(temp, n):
            b[i] -= j
        b.sort()
        temp = br(a, j-1)
        for i in a[:temp]:
            k += (i & j) // j
        for i in range(temp, n):
            k += (a[i] & j) // j
            a[i] -= j
        x = (k+br(b, 0))*m % 2
        a.sort()
        l = 0
        for i in a:
            while l < n:
                if i >= b[l]:
                    l += 1
                else:
                    break
            x += l % 2
        ans += (x % 2)*j
    print(ans)


main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    from bisect import bisect_right as br
    import numpy as np
    n = int(input())
    a = np.array(list(map(int, input().split())))
    b = np.array(list(map(int, input().split())))
    a = np.sort(a)
    b = np.sort(b[::-1])
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    b = pow(2, 28) - b
    ans = 0
    for loop in range(28, -1, -1):
        j = pow(2, loop)
        k = (xor & j) // j
        temp = br(b, j-1)
        b[temp:n] -= j
        b = np.sort(b)
        temp = br(a, j-1)
        k += sum((a & j) // j)
        a[temp:n] -= j
        x = (k+br(b, 0))*m % 2
        a = np.sort(a)
        l = 0
        for i in a:
            while l < n:
                if i >= b[l]:
                    l += 1
                else:
                    break
            x += l % 2
        ans += (x % 2)*j
    print(ans)


main()

Fixed submission:
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())), reverse=True)
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    for i in range(n):
        b[i] = 2**28 - b[i]
    ans = 0
    for loop in range(28, -1, -1):
        j = pow(2, loop)
        k = (xor & j) // j
        temp = br(b, j-1)
        for i in range(temp, n):
            b[i] -= j
        b.sort()
        temp = br(a, j-1)
        for i in a[:temp]:
            k += (i & j) // j
        for i in range(temp, n):
            k += (a[i] & j) // j
            a[i] -= j
        x = (k+br(b, 0))*m % 2
        a.sort()
        l = 0
        for i in a:
            while l < n:
                if i >= b[l]:
                    l += 1
                else:
                    break
            x += l % 2
        ans += (x % 2)*j
    print(ans)


main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())), reverse=True)
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    for i in range(n):
        b[i] = 2**28 - b[i]
    ans = 0
    for loop in range(28, -1, -1):
        j = pow(2, loop)
        k = (xor & j) // j
        temp = br(b, j-1)
        for i in range(temp, n):
            b[i] -= j
        b.sort()
        temp = br(a, j-1)
        for i in a[:temp]:
            k += (i & j) // j
        for i in range(temp, n):
            k += (a[i] & j) // j
            a[i] -= j
        x = (k+br(b, 0))*m % 2
        a.sort()
        l = 0
        for i in a:
            while l < n:
                if i >= b[l]:
                    l += 1
                else:
                    break
            x += l % 2
        ans += (x % 2)*j
    print(ans)


main()


Fixed submission:
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())), reverse=True)
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    for i in range(n):
        b[i] = 2**28 - b[i]
    ans = 0
    for loop in range(28, -1, -1):
        j = pow(2, loop)
        k = (xor & j) // j
        temp = br(b, j-1)
        for i in range(temp, n):
            b[i] -= j
        b.sort()
        temp = br(a, j-1)
        for i in a[:temp]:
            k += (i & j) // j
        for i in range(temp, n):
            k += (a[i] & j) // j
            a[i] -= j
        x = (k+br(b, 0))*m % 2
        a.sort()
        l = 0
        for i in a:
            while l < n:
                if i >= b[l]:
                    l += 1
                else:
                    break
            x += l % 2
        ans += (x % 2)*j
    print(ans)


main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    from bisect import bisect_right as br
    from sys import stdin
    input=stdin.readline
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())), reverse=True)
    #n = 100000
    #a = [i+1 for i in range(n)]
    #b = [2*i+2 for i in range(n)]
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    for i in range(n):
        b[i] = 2**28 - b[i]
    ans = 0
    for loop in range(28, -1, -1):
        j = pow(2, loop)
        k = (xor & j) // j
        temp = br(b, j-1)
        for i in range(temp, n):
            b[i] -= j
        b.sort()
        x = k*m % 2
        b0 = br(b, 0) % 2
        for i in a:
            k2 = m * (i & j) // j
            x += (k2 + br(b, i % j) - b0) % 2
        ans += (x % 2)*j
    print(ans)


main()


Fixed submission:
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())), reverse=True)
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    for i in range(n):
        b[i] = 2**28 - b[i]
    ans = 0
    for loop in range(28, -1, -1):
        j = pow(2, loop)
        k = (xor & j) // j
        temp = br(b, j-1)
        for i in range(temp, n):
            b[i] -= j
        b.sort()
        temp = br(a, j-1)
        for i in a[:temp]:
            k += (i & j) // j
        for i in range(temp, n):
            k += (a[i] & j) // j
            a[i] -= j
        x = (k+br(b, 0))*m % 2
        a.sort()
        l = 0
        for i in a:
            while l < n:
                if i >= b[l]:
                    l += 1
                else:
                    break
            x += l % 2
        ans += (x % 2)*j
    print(ans)


main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())), reverse=True)
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    for i in range(n):
        b[i] = 2**28 - b[i]
    ans = 0
    for loop in range(28, -1, -1):
        j = pow(2, loop)
        k = (xor & j) // j
        temp = br(b, j-1)
        for i in range(temp, n):
            b[i] -= j
        b.sort()
        x = k*m % 2
        b0 = br(b, 0) % 2
        for i in a:
            k2 = m * (i & j) // j
            x += (k2 + br(b, i % j) - b0) % 2
        ans += (x % 2)*j
    print(ans)


main()


Fixed submission:
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())), reverse=True)
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    for i in range(n):
        b[i] = 2**28 - b[i]
    ans = 0
    for loop in range(28, -1, -1):
        j = pow(2, loop)
        k = (xor & j) // j
        temp = br(b, j-1)
        for i in range(temp, n):
            b[i] -= j
        b.sort()
        temp = br(a, j-1)
        for i in a[:temp]:
            k += (i & j) // j
        for i in range(temp, n):
            k += (a[i] & j) // j
            a[i] -= j
        x = (k+br(b, 0))*m % 2
        a.sort()
        l = 0
        for i in a:
            while l < n:
                if i >= b[l]:
                    l += 1
                else:
                    break
            x += l % 2
        ans += (x % 2)*j
    print(ans)


main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())))
    #n = 10000 #
    #a = [i+1 for i in range(n)] #
    #b = [2*i+2 for i in range(n)] #
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    for i in range(n):
        b[i] = -b[i]

    ans = 0
    for loop in range(28, -1, -1):
        j = 2**loop
        k = (xor & j) // j
        for i in range(n):
            b[i] = b[i] % j
        b.sort()
        x = k*m % 2
        b0 = br(b, 0)
        for i in a:
            k2 = m * (i & j) // j
            x += (k2 + br(b, i % j) - b0) % 2
        x %= 2
        ans += x*j
    print(ans)


main()

Fixed submission:
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())), reverse=True)
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    for i in range(n):
        b[i] = 2**28 - b[i]
    ans = 0
    for loop in range(28, -1, -1):
        j = pow(2, loop)
        k = (xor & j) // j
        temp = br(b, j-1)
        for i in range(temp, n):
            b[i] -= j
        b.sort()
        temp = br(a, j-1)
        for i in a[:temp]:
            k += (i & j) // j
        for i in range(temp, n):
            k += (a[i] & j) // j
            a[i] -= j
        x = (k+br(b, 0))*m % 2
        a.sort()
        l = 0
        for i in a:
            while l < n:
                if i >= b[l]:
                    l += 1
                else:
                    break
            x += l % 2
        ans += (x % 2)*j
    print(ans)


main()

Buggy python submission (verdict: Runtime Error):
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())))
    #n = 10000 #
    #a = [i+1 for i in range(n)] #
    #b = [2*i+2 for i in range(n)] #
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    for i in range(n):
        b[i] = -b[i]

    ans = 0
    for loop in range(28, -1, -1):
        j = 2**loop
        k = (xor & j) // j
        for i in range(i):
            b[i] = b[i] % j
        b.sort()
        x = k*m % 2
        b0 = br(b, 0)
        for i in a:
            k2 = m * (i & j) // j
            x += (k2 + br(b, i % j) - b0) % 2
        x %= 2
        ans += x*j
    print(ans)


main()

Fixed submission:
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())), reverse=True)
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    for i in range(n):
        b[i] = 2**28 - b[i]
    ans = 0
    for loop in range(28, -1, -1):
        j = pow(2, loop)
        k = (xor & j) // j
        temp = br(b, j-1)
        for i in range(temp, n):
            b[i] -= j
        b.sort()
        temp = br(a, j-1)
        for i in a[:temp]:
            k += (i & j) // j
        for i in range(temp, n):
            k += (a[i] & j) // j
            a[i] -= j
        x = (k+br(b, 0))*m % 2
        a.sort()
        l = 0
        for i in a:
            while l < n:
                if i >= b[l]:
                    l += 1
                else:
                    break
            x += l % 2
        ans += (x % 2)*j
    print(ans)


main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())))
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i

    ans = 0
    for loop in range(29):
        j = 2**loop
        k = (xor & j) // j
        temp = []
        for i in b:
            ii = (-i) % j
            if ii != 0:
                temp.append(ii)
        temp.sort()
        x = k*m % 2
        for i in a:
            k2 = m * (i & j) // j
            x += (k2 + br(temp, i % j)) % 2
        x %= 2
        ans += x*j
    print(ans)


main()

Fixed submission:
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())), reverse=True)
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    for i in range(n):
        b[i] = 2**28 - b[i]
    ans = 0
    for loop in range(28, -1, -1):
        j = pow(2, loop)
        k = (xor & j) // j
        temp = br(b, j-1)
        for i in range(temp, n):
            b[i] -= j
        b.sort()
        temp = br(a, j-1)
        for i in a[:temp]:
            k += (i & j) // j
        for i in range(temp, n):
            k += (a[i] & j) // j
            a[i] -= j
        x = (k+br(b, 0))*m % 2
        a.sort()
        l = 0
        for i in a:
            while l < n:
                if i >= b[l]:
                    l += 1
                else:
                    break
            x += l % 2
        ans += (x % 2)*j
    print(ans)


main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())))

    xor = 0
    for i in b:
        xor ^= i

    ans = 0
    for loop in range(29):
        j = 2**loop  # 2のloop乗
        k = (xor & j) // j  # 下からloop桁目のbit
        #print(j, k)
        temp = []
        for i in b:
            ii = (-i) % j
            if ii == 0:
                ii = j
            temp.append(ii)
        temp.sort()
        x = k*len(a) % 2
        for i in a:
            k2 = 0
            if len(a) % 2 == 1:
                k2 = len(a) * (i & j) // j
            x += (k2 + br(temp, i % j)) % 2
            #print(i % j, br(temp, i % j))
        x %= 2
        ans += x*j
        #print(temp, x)
    print(ans)


main()

Fixed submission:
def main():
    from bisect import bisect_right as br
    n = int(input())
    a = sorted(list(map(int, input().split())))
    b = sorted(list(map(int, input().split())), reverse=True)
    m = n % 2
    xor = 0
    for i in b:
        xor ^= i
    for i in range(n):
        b[i] = 2**28 - b[i]
    ans = 0
    for loop in range(28, -1, -1):
        j = pow(2, loop)
        k = (xor & j) // j
        temp = br(b, j-1)
        for i in range(temp, n):
            b[i] -= j
        b.sort()
        temp = br(a, j-1)
        for i in a[:temp]:
            k += (i & j) // j
        for i in range(temp, n):
            k += (a[i] & j) // j
            a[i] -= j
        x = (k+br(b, 0))*m % 2
        a.sort()
        l = 0
        for i in a:
            while l < n:
                if i >= b[l]:
                    l += 1
                else:
                    break
            x += l % 2
        ans += (x % 2)*j
    print(ans)


main()