Submission #848447

#	Time	Username	Problem	Language	Result	Execution time	Memory
848447		MinhQNgo	XORanges (eJOI19_xoranges)	Pypy 3	18 / 100	1010 ms	38276 KiB

xoranges

n, q = map(int, input().split())
a = [int(x) for x in input().split()]

prefix_xor = a[:]
for i in range(1, n):
    prefix_xor[i] ^= prefix_xor[i - 1]

for _ in range(q):
    act_type, x, y = map(int, input().split())

    x -= 1
    y -= 1

    res = 0
    for d in range(1, y - x + 2):
        total_xor_of_seq_len_d = 0
        for i in range(x, y - d + 2):
            if i == 0:
                total_xor_of_seq_len_d ^= prefix_xor[i + d - 1]
            else:
                total_xor_of_seq_len_d ^= (prefix_xor[i + d - 1] ^ prefix_xor[i - 1])
        res ^= total_xor_of_seq_len_d
    print(res)

• Subtask 1: 0 / 12
• Subtask 2: 18 / 18
• Subtask 3: 0 / 25
• Subtask 4: 0 / 20
• Subtask 5: 0 / 25