結果
問題 | No.1072 A Nice XOR Pair |
ユーザー | McGregorsh |
提出日時 | 2022-07-09 13:21:32 |
言語 | PyPy3 (7.3.15) |
結果 |
RE
|
実行時間 | - |
コード長 | 1,903 bytes |
コンパイル時間 | 504 ms |
コンパイル使用メモリ | 82,152 KB |
実行使用メモリ | 132,400 KB |
最終ジャッジ日時 | 2024-06-09 19:06:04 |
合計ジャッジ時間 | 4,934 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 147 ms
89,316 KB |
testcase_01 | AC | 144 ms
89,152 KB |
testcase_02 | AC | 141 ms
89,872 KB |
testcase_03 | AC | 146 ms
89,560 KB |
testcase_04 | RE | - |
testcase_05 | AC | 145 ms
89,244 KB |
testcase_06 | AC | 165 ms
90,936 KB |
testcase_07 | AC | 419 ms
132,400 KB |
testcase_08 | AC | 260 ms
98,068 KB |
testcase_09 | RE | - |
testcase_10 | RE | - |
testcase_11 | AC | 371 ms
114,356 KB |
testcase_12 | AC | 383 ms
130,592 KB |
ソースコード
import sys, re from fractions import Fraction from math import ceil, floor, sqrt, pi, factorial, gcd from copy import deepcopy from collections import Counter, deque, defaultdict from heapq import heapify, heappop, heappush from itertools import accumulate, product, combinations, combinations_with_replacement, permutations from bisect import bisect, bisect_left, bisect_right from functools import reduce from decimal import Decimal, getcontext def i_input(): return int(input()) def i_map(): return map(int, input().split()) def i_list(): return list(i_map()) def i_row(N): return [i_input() for _ in range(N)] def i_row_list(N): return [i_list() for _ in range(N)] def s_input(): return input() def s_map(): return input().split() def s_list(): return list(s_map()) def s_row(N): return [s_input for _ in range(N)] def s_row_str(N): return [s_list() for _ in range(N)] def s_row_list(N): return [list(s_input()) for _ in range(N)] def lcm(a, b): return a * b // gcd(a, b) def get_distance(x1, y1, x2, y2): d = sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2) return d def rotate(table): n_fild = [] for x in zip(*table[::-1]): n_fild.append(x) return n_fild sys.setrecursionlimit(10 ** 7) INF = float('inf') MOD = 10 ** 9 + 7 MOD2 = 998244353 ###関数コピーしたか?### def main(): n, x = i_map() A = [] nums = set() count_a = defaultdict(int) for i in range(n): num = int(input()) nums.add(num) A.append(num) count_a[num] += 1 if x == 0: count = 0 for key, value in count_a.items(): count += nCr(count_a[key], 2) print(count) exit() ans = 0 for i in range(n): point = A[i] ^ x if point in nums: ans += count_a[A[i]] * count_a[point] count_a[A[i]] = 0 count_a[point] = 0 print(ans) if __name__ == '__main__': main()