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 412 ms / 2,000 ms
コード長 6,664 bytes
コンパイル時間 329 ms
コンパイル使用メモリ 81,844 KB
実行使用メモリ 182,344 KB
最終ジャッジ日時 2023-10-27 23:53:05
合計ジャッジ時間 10,228 ms
ジャッジサーバーID
（参考情報） 		judge12 / judge13
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 153 ms
89,292 KB
testcase_01 AC 153 ms
89,288 KB
testcase_02 AC 151 ms
89,292 KB
testcase_03 AC 153 ms
89,292 KB
testcase_04 AC 153 ms
89,292 KB
testcase_05 AC 152 ms
89,292 KB
testcase_06 AC 154 ms
89,296 KB
testcase_07 AC 153 ms
89,288 KB
testcase_08 AC 151 ms
89,292 KB
testcase_09 AC 151 ms
89,292 KB
testcase_10 AC 153 ms
89,292 KB
testcase_11 AC 153 ms
89,292 KB
testcase_12 AC 155 ms
89,292 KB
testcase_13 AC 369 ms
177,804 KB
testcase_14 AC 266 ms
130,328 KB
testcase_15 AC 402 ms
182,344 KB
testcase_16 AC 412 ms
182,264 KB
testcase_17 AC 328 ms
146,188 KB
testcase_18 AC 324 ms
140,876 KB
testcase_19 AC 300 ms
136,968 KB
testcase_20 AC 308 ms
137,032 KB
testcase_21 AC 394 ms
178,772 KB
testcase_22 AC 180 ms
98,512 KB
testcase_23 AC 304 ms
142,060 KB
testcase_24 AC 242 ms
125,400 KB
testcase_25 AC 178 ms
96,560 KB
testcase_26 AC 365 ms
165,208 KB
testcase_27 AC 179 ms
97,672 KB
testcase_28 AC 190 ms
99,152 KB
testcase_29 AC 240 ms
124,608 KB
testcase_30 AC 202 ms
105,148 KB
testcase_31 AC 328 ms
142,660 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