onlyblues

2023年10月29日

摘要： D. Counting Rhyme You are given an array of integers $a_1, a_2, \ldots, a_n$. A pair of integers $(i, j)$, such that $1 \le i < j \le n$, is called go 阅读全文

posted @ 2023-10-29 20:23 onlyblues 阅读(146) 评论(1) 推荐(1)

D. Doremy's Connecting Plan

摘要： D. Doremy's Connecting Plan Doremy lives in a country consisting of $n$ cities numbered from $1$ to $n$, with $a_i$ people living in the $i$-th city. 阅读全文

posted @ 2023-10-29 19:37 onlyblues 阅读(81) 评论(1) 推荐(0)

2023年10月25日

E. Segment Sum

摘要： E. Segment Sum You are given two integers $l$ and $r$ ($l \le r$). Your task is to calculate the sum of numbers from $l$ to $r$ (including $l$ and $r$ 阅读全文

posted @ 2023-10-25 20:47 onlyblues 阅读(85) 评论(0) 推荐(0)

2023年10月24日

E. Time Travel

摘要： E. Time Travel Berland is a country with ancient history, where roads were built and destroyed for centuries. It is known that there always were $n$ c 阅读全文

posted @ 2023-10-24 18:40 onlyblues 阅读(125) 评论(0) 推荐(0)

Minimum Changes to Make K Semi-palindromes

摘要： Minimum Changes to Make K Semi-palindromes Given a string s and an integer k, partition s into k substrings such that the sum of the number of letter 阅读全文

posted @ 2023-10-24 16:16 onlyblues 阅读(51) 评论(0) 推荐(0)

2023年10月23日

D2. Dances (Hard Version)

摘要： D2. Dances (Hard Version) This is the hard version of the problem. The only difference is that in this version $m \leq 10^9$. You are given two arrays 阅读全文

posted @ 2023-10-23 23:56 onlyblues 阅读(89) 评论(0) 推荐(0)

B. Raspberries

摘要： B. Raspberries You are given an array of integers $a_1, a_2, \ldots, a_n$ and a number $k$ ($2 \leq k \leq 5$). In one operation, you can do the follo 阅读全文

posted @ 2023-10-23 19:34 onlyblues 阅读(39) 评论(0) 推荐(0)

C. Medium Design

摘要： C. Medium Design The array $a_1, a_2, \ldots, a_m$ is initially filled with zeroes. You are given $n$ pairwise distinct segments $1 \le l_i \le r_i \l 阅读全文

posted @ 2023-10-23 17:28 onlyblues 阅读(201) 评论(0) 推荐(0)

2023年10月21日

koishi的数学题

摘要： koishi的数学题题目描述 Koishi 在 Flandre 的指导下成为了一名数学大师，她想了一道简单的数学题。输入一个整数 $n$，设 $\displaystyle f(x) = \sum_{i=1}^n x \bmod i$，你需要输出 $f(1), f(2), \ldots , f(n 阅读全文

posted @ 2023-10-21 14:21 onlyblues 阅读(38) 评论(0) 推荐(0)

2023年10月20日

统计子矩阵

摘要：统计子矩阵给定一个 $N \times M$ 的矩阵 $A$，请你统计有多少个子矩阵 (最小 $1 \times 1$，最大 $N × M$) 满足子矩阵中所有数的和不超过给定的整数 $K$? 输入格式第一行包含三个整数 $N, M$ 和 $K$。之后 $N$ 行每行包含 $M$ 个整数，代表阅读全文

posted @ 2023-10-20 10:04 onlyblues 阅读(101) 评论(0) 推荐(0)

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