Ldh1315109

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全部文章（共48篇）

题解 | 小红走矩阵

''' Hala Madrid! https://github.com/USYDDonghaoLi/Programming_Competition ''' import sys import os from io import BytesIO, IOBase BUFSIZE = 8192 clas...

2025-11-09

3 32

题解 | 汉诺塔

def f(src, dest, n): if n == 1: print(chr(65 + src), chr(65 + dest)) return else: f(src, 3 - src - dest, n - 1) ...

2025-11-09

2 34

题解 | 小红的方神题spj

def solve(testcase): n = II() A = LII() while len(A) > 1: B = [] for i in range(1, len(A)): B.append(abs(A...

2025-11-09

2 29

题解 | 出现奇数次的数

def solve(testcase): n = II() res = 0 for a in LII(): res ^= a print(res) for testcase in range(1): solve(testcase)

2025-11-09

2 22

题解 | 二进制位中1的数量

def popcount(n: int) -> int: n -= ((n >> 1) & 0x5555555555555555) n = (n & 0x3333333333333333) + ((n >> 2) & 0x3333...

2025-11-09

2 27

题解 | 小红的数字分裂

def solve(testcase): n = II() A = LII() g = 0 for a in A: g = gcd(g, a) print(sum(a // g - 1 for a in A)) for testc...

2025-11-09

2 25

题解 | 【模板】分数四则运算

from fractions import Fraction def solve(testcase): a, b, op, c, d = MI() try: A = Fraction(a, b) B = Fraction(c, d) ...

2025-11-09

2 33

题解 | 区间翻转

def solve(testcase): n, k = MI() q = deque() cur = 1 res = [] cl, cr = 0, 0 flag = True for _ in range(k): l, r =...

2025-11-09

3 23

题解 | 小红的三带一

def solve(testcase): n = II() A = LII() dp = [0 for _ in range(n + 1)] def f(idx): c = Counter(A[idx - 3: idx + 1]) ...

2025-11-09

2 21

题解 | 字符串展开

def solve(testcase): a, b, c = MI() s = I() n = len(s) res = [] for i, ch in enumerate(s): if ch != '-': re...

2025-11-07

2 23