結果

問題 No.2517 Right Triangles on Circle
ユーザー StanMarshStanMarsh
提出日時 2023-10-27 23:52:55
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 405 ms / 2,000 ms
コード長 6,664 bytes
コンパイル時間 325 ms
コンパイル使用メモリ 82,400 KB
実行使用メモリ 183,112 KB
最終ジャッジ日時 2024-09-25 15:37:56
合計ジャッジ時間 9,264 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge5
このコードへのチャレンジ
（要ログイン）

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
90,212 KB
testcase_01 AC 147 ms
90,044 KB
testcase_02 AC 149 ms
90,216 KB
testcase_03 AC 146 ms
90,048 KB
testcase_04 AC 146 ms
90,220 KB
testcase_05 AC 147 ms
90,220 KB
testcase_06 AC 146 ms
90,064 KB
testcase_07 AC 147 ms
90,160 KB
testcase_08 AC 149 ms
90,240 KB
testcase_09 AC 147 ms
90,272 KB
testcase_10 AC 151 ms
90,032 KB
testcase_11 AC 148 ms
90,184 KB
testcase_12 AC 146 ms
90,128 KB
testcase_13 AC 363 ms
178,632 KB
testcase_14 AC 261 ms
131,120 KB
testcase_15 AC 405 ms
183,044 KB
testcase_16 AC 392 ms
183,112 KB
testcase_17 AC 307 ms
148,680 KB
testcase_18 AC 298 ms
141,324 KB
testcase_19 AC 285 ms
137,960 KB
testcase_20 AC 291 ms
138,112 KB
testcase_21 AC 379 ms
179,480 KB
testcase_22 AC 176 ms
98,184 KB
testcase_23 AC 299 ms
142,468 KB
testcase_24 AC 234 ms
126,432 KB
testcase_25 AC 171 ms
96,524 KB
testcase_26 AC 351 ms
166,092 KB
testcase_27 AC 175 ms
97,844 KB
testcase_28 AC 186 ms
99,488 KB
testcase_29 AC 231 ms
125,268 KB
testcase_30 AC 197 ms
105,380 KB
testcase_31 AC 306 ms
143,076 KB
権限があれば一括ダウンロードができます

ソースコード

diff # 

from random import getrandbits, randrange
from string import ascii_lowercase, ascii_uppercase
import sys
from math import ceil, floor, sqrt, pi, factorial, gcd, log, log10, log2, inf, cos, sin
from copy import deepcopy, copy
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 lru_cache, reduce
from decimal import Decimal, getcontext
from typing import List, Tuple, Optional


inf = float("inf")


def ceil_div(a, b):
    return (a + b - 1) // b


def isqrt(num):
    res = int(sqrt(num))
    while res * res > num:
        res -= 1
    while (res + 1) * (res + 1) <= num:
        res += 1
    return res


def int1(s):
    return int(s) - 1


from types import GeneratorType


def bootstrap(f, stack=[]):
    def wrapped(*args, **kwargs):
        if stack:
            return f(*args, **kwargs)
        else:
            to = f(*args, **kwargs)
            while True:
                if type(to) is GeneratorType:
                    stack.append(to)
                    to = next(to)
                else:
                    stack.pop()
                    if not stack:
                        break
                    to = stack[-1].send(to)
            return to

    return wrapped


import sys
import os
from io import BytesIO, IOBase

BUFSIZE = 8192


class FastIO(IOBase):
    newlines = 0

    def __init__(self, file):
        self._fd = file.fileno()
        self.buffer = BytesIO()
        self.writable = "x" in file.mode or "r" not in file.mode
        self.write = self.buffer.write if self.writable else None

    def read(self):
        while True:
            b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
            if not b:
                break
            ptr = self.buffer.tell()
            self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
        self.newlines = 0
        return self.buffer.read()

    def readline(self):
        while self.newlines == 0:
            b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
            self.newlines = b.count(b"\n") + (not b)
            ptr = self.buffer.tell()
            self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
        self.newlines -= 1
        return self.buffer.readline()

    def flush(self):
        if self.writable:
            os.write(self._fd, self.buffer.getvalue())
            self.buffer.truncate(0), self.buffer.seek(0)


class IOWrapper(IOBase):
    def __init__(self, file):
        self.buffer = FastIO(file)
        self.flush = self.buffer.flush
        self.writable = self.buffer.writable
        self.write = lambda s: self.buffer.write(s.encode("ascii"))
        self.read = lambda: self.buffer.read().decode("ascii")
        self.readline = lambda: self.buffer.readline().decode("ascii")


sys.stdin, sys.stdout = IOWrapper(sys.stdin), IOWrapper(sys.stdout)
input = lambda: sys.stdin.readline().rstrip("\r\n")


print = lambda *args, end="\n", sep=" ": sys.stdout.write(
    sep.join(map(str, args)) + end
)


def II():
    return int(input())


def MII(base=0):
    return map(lambda s: int(s) - base, input().split())


def LII(base=0):
    return list(MII(base))


def read_graph(n, m, base=0, directed=False, return_edges=False):

    g = [[] for _ in range(n)]
    edges = []
    for _ in range(m):
        a, b = MII(base)
        if return_edges:
            edges.append((a, b))
        g[a].append(b)
        if not directed:
            g[b].append(a)
    if return_edges:
        return g, edges
    return g


def read_graph_with_weight(n, m, base=0, directed=False, return_edges=False):

    g = [[] for _ in range(n)]
    edges = []
    for _ in range(m):
        a, b, w = MII()
        a, b = a - base, b - base
        if return_edges:
            edges.append((a, b, w))
        g[a].append((b, w))
        if not directed:
            g[b].append((a, w))
    if return_edges:
        return g, edges
    return g


def yes(res):
    print("Yes" if res else "No")


def YES(res):
    print("YES" if res else "NO")


def cmin(dp, i, x):
    if x < dp[i]:
        dp[i] = x


def cmax(dp, i, x):
    if x > dp[i]:
        dp[i] = x


def alp_a_to_i(s):
    return ord(s) - ord("a")


def alp_A_to_i(s):
    return ord(s) - ord("A")


def alp_i_to_a(i):
    return chr(ord("a") + i)


def alp_i_to_A(i):
    return chr(ord("A") + i)


d4 = [(1, 0), (0, 1), (-1, 0), (0, -1)]
d8 = [(1, 0), (1, 1), (0, 1), (-1, 1), (-1, 0), (-1, -1), (0, -1), (1, -1)]


def ranges(n, m):
    return ((i, j) for i in range(n) for j in range(m))


def valid(i, j, n, m):
    return 0 <= i < n and 0 <= j < m


def ninj(i, j, n, m):
    return [(i + di, j + dj) for di, dj in d4 if valid(i + di, j + dj, n, m)]


def gen(x, *args):
    if len(args) == 1:
        return [x] * args[0]
    if len(args) == 2:
        return [[x] * args[1] for _ in [0] * args[0]]
    if len(args) == 3:
        return [[[x] * args[2] for _ in [0] * args[1]] for _ in [0] * args[0]]
    if len(args) == 4:
        return [
            [[[x] * args[3] for _ in [0] * args[2]] for _ in [0] * args[1]]
            for _ in [0] * args[0]
        ]


list2d = lambda a, b, v: [[v] * b for _ in range(a)]
list3d = lambda a, b, c, v: [[[v] * c for _ in range(b)] for _ in range(a)]


class Debug:
    def __init__(self, debug=False):
        self.debug = debug
        cur_path = os.path.dirname(os.path.abspath(__file__))
        self.local = os.path.exists(cur_path + "/.cph")

    def get_ic(self):
        if self.debug and self.local:
            from icecream import ic

            return ic
        else:
            return lambda *args, **kwargs: ...


RANDOM = getrandbits(32)


class Wrapper(int):
    def __init__(self, x):
        int.__init__(x)

    def __hash__(self):
        return super(Wrapper, self).__hash__() ^ RANDOM


def pairwise(a):
    n = len(a)
    for i in range(n - 1):
        yield a[i], a[i + 1]


def factorial(n):
    return reduce(lambda x, y: x * y, range(1, n + 1))


def iterate_tokens():
    for line in sys.stdin:
        for word in line.split():
            yield word


tokens = iterate_tokens()

ic = Debug(1).get_ic()


n, m = int(next(tokens)), int(next(tokens))
a = [int(next(tokens)) for _ in range(n)]
a.sort()
if m % 2 == 1:
    print(0)
    exit()
res = 0
s = set([Wrapper(ai) for ai in a])
m2 = m // 2
for ai in a:
    if ai > m2:
        break
    if Wrapper(ai + m2) in s:
        res += n - 2
print(res)
0