結果
| 問題 |
No.1142 XOR と XOR
|
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-03-20 21:11:01 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 1,853 bytes |
| コンパイル時間 | 460 ms |
| コンパイル使用メモリ | 82,400 KB |
| 実行使用メモリ | 163,444 KB |
| 最終ジャッジ日時 | 2025-03-20 21:11:12 |
| 合計ジャッジ時間 | 4,951 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | TLE * 2 -- * 23 |
ソースコード
MOD = 10**9 + 7
def main():
import sys
input = sys.stdin.read().split()
idx = 0
N = int(input[idx]); idx +=1
M = int(input[idx]); idx +=1
K = int(input[idx]); idx +=1
a = list(map(int, input[idx:idx+N]))
idx +=N
b = list(map(int, input[idx:idx+M]))
idx +=M
# Compute prefix XOR for a
pre_a = [0] * (N+1)
for i in range(1, N+1):
pre_a[i] = pre_a[i-1] ^ a[i-1]
# Compute prefix XOR for b
pre_b = [0] * (M+1)
for i in range(1, M+1):
pre_b[i] = pre_b[i-1] ^ b[i-1]
# Calculate counter_a
counter_a = [0] * 1024
map_a = [0] * 1024
map_a[pre_a[0]] += 1 # pre_a[0] =0
for i in range(1, N+1):
current = pre_a[i]
temp_counter = [0] * 1024
for x in range(1024):
if map_a[x] == 0:
continue
xor_val = current ^ x
temp_counter[xor_val] += map_a[x]
# Update counter_a
for x in range(1024):
counter_a[x] = (counter_a[x] + temp_counter[x]) % MOD
# Update map_a
map_a[current] += 1
# Calculate counter_b
counter_b = [0] * 1024
map_b = [0] * 1024
map_b[pre_b[0]] += 1 # pre_b[0] =0
for i in range(1, M+1):
current = pre_b[i]
temp_counter = [0] * 1024
for x in range(1024):
if map_b[x] == 0:
continue
xor_val = current ^ x
temp_counter[xor_val] += map_b[x]
# Update counter_b
for x in range(1024):
counter_b[x] = (counter_b[x] + temp_counter[x]) % MOD
# Update map_b
map_b[current] += 1
# Calculate the answer
ans = 0
for x in range(1024):
y = x ^ K
ans = (ans + counter_a[x] * counter_b[y]) % MOD
print(ans % MOD)
if __name__ == '__main__':
main()
lam6er