結果

問題 No.1072 A Nice XOR Pair
ユーザー McGregorshMcGregorsh
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
このコードへのチャレンジ
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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
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ソースコード

diff #

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()

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