USACO 2024年2月白银组试题 USACO2024F EBRUARY C ONTEST,S ILVER P ROBLEM1.T ARGET P RACTICE II 注意：本题的时间限制为 2.5秒，通常限制的 1.25倍。注意：这个问题涉及到的整数可能需要使用64位整数型（例如，C/C++中的"long long"）。巴黎哞运会即将来临，Farmer John正在对他的奶牛队进行...
The second contest of the 2023-2024 USACO season will run from January 26th to January 29th. Good luck to everyone! Please wait until the contest is over for everyone before discussing anything contest-related (including but not limited to your scores or anything about the problems). For those...
题目描述 Bessie和Elsie在玩一个游戏,初始时有一堆石头,数量为S(1≤S<10105)。两头奶牛轮流进行,Bessie 先开始。在一头奶牛的回合中,她必须从堆中移除x个石头,其中x是她选择的任意正整数回文数。如果在一头奶牛的回合开始时堆为空,则该奶牛失败。 定义: 如果一个正整数从左向右和从右向左读都相同,则它是...
总结 2021-2022赛季整体难度均有提升,尤其是Bronze和Silver这两个级别提升更加明显,各位从分数线上的变化可以直观的感受到。官方也坦言这次比赛题目绝对没有吝啬难度,原文如下: “The problem lineup this time around definitely did not skimp on difficulty; even the bronze-level contest required careful thinking ...
USACO 2021 February Contest, Bronze Problem 3. Clockwise Fence LouisX USACOwww.usaco.org/index.php?page=viewproblem2&cpid=1109 N = int(input()) d = {"EN": -1, "NW": -1, "WS": -1, "SE": -1, "ES": 1, "SW": 1, "WN": 1, "NE": 1, "EE": 0, "NN": 0, ...
2021-2022赛季整体难度均有提升,尤其是Bronze和Silver这两个级别提升更加明显,各位从分数线上的变化可以直观的感受到(每场比赛的详细题解请关注文末公众号查看)。官方也坦言这次比赛题目绝对没有吝啬难度,原文如下: “The problem lineup this time aro...
USACO 2022 February contest Cu 忘存代码了,看个乐就行。 T1 Sleeping in Class 给出nn个数aa,任意合并相邻两个数,问使合并到最后全部相等的合并次数最小值。 n≤105,∑a≤106n≤105,∑a≤106 因为合并到最后的数一定是∑a∑a的约数,所以枚举∑a∑a很少的约数然后O(n)O(n)判断即可。Orz huaruoji...
USACO 2017 February Contest总结 比赛链接 T1 Why Did the Cow Cross the Road 题目链接 题目大意:给定一个N×NN×N的网格。穿过两个格子的交界处需要有一个花费,每走三个格子也会有一个花费,问从左上角走到右下角的最小花费。 思路:一眼看上去每三个格有一个花费,看上去不是很好处理,仔细一想。
USACO 2021 February Contest, Bronze Problem 1. Year of the Cow LouisX USACOwww.usaco.org/index.php?page=viewproblem2&cpid=1107&lang=zh N = int(input()) d = {"Ox": 0, "Tiger": 1, "Rabbit": 2, "Dragon": 3, "Snake": 4, "Horse": 5, "Goat": 6, "Monkey": 7, "...
Thethird contestof the 2017-2018 USACO season will be running from Friday, February 23rd to Monday, February 26th. This will be the last contest before the US Open, scheduled for March 23rd to March 26th. Please wait until the contest is over for everyone before discussing problems here. ...