本文链接:https://www.cnblogs.com/blowhail/p/10990833.html Nauuo and Cards 原题链接:http://codeforces.com/contest/1173/problem/C 题目大意 :有2n张卡片,其中n张编号为1-n,另外n张为0. 现在手中拿n张,桌子上放n张,每次操作可以在桌子上底部放入一张卡片,最上面拿走一张卡片,问最小操作次数. 思路: 先看看卡片1的位置,卡片1在桌子上时,看看是否满足从1递增到底部,例如 0 0 1…

本文链接:https://www.cnblogs.com/blowhail/p/10991237.html B. Nauuo and Chess  原题链接:http://codeforces.com/contest/1173/problem/B 题目大意: 在一个m x m的棋盘中放n个棋子,满足 |ri−rj| + |ci−cj| ≥ |i−j|   |ri−rj| + |ci−cj| ≥ |i−j|   (r为行,c为列) 大致思路:找规律之后可以发现,斜对角线上可以放的最大棋子数满足1…

思维题--code forces round# 551 div.2 题目 D. Serval and Rooted Tree time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Now Serval is a junior high school student in Japari Middle School, and he is…

Code Forces 796C Bank Hacking 题目大意 给一棵树,有\(n\)个点,\(n-1\)条边,现在让你决策出一个点作为起点,去掉这个点,然后这个点连接的所有点权值+=1,然后再将这些刚刚加过一的点的相邻的点的权值+=1 也就是说,除了与根节点相邻的点+=1,其余点+=2 然后求最大集合的最小点权 solution 一看是要求最大的的最小值,首先想到的就是二分,显然想到这个目前没有什么卵用,二分是用来卡最佳答案的,所以使用二分的前提是要给它一个范围去选择,那么现在的任务就是…

Code Forces 833 A The Meaningless Game 题目大意 有两个人玩游戏,每轮给出一个自然数k,赢得人乘k^2,输得人乘k,给出最后两个人的分数,问两个人能否达到这个分数 不得不吐槽一下那么长的英文题面翻译完只有一句话-- solution 也很好想叭 乘积开立方判断是否为两个数的因数 如果是的话,显然不成立 否则输出Yes即可 #include <iostream> #include <cstring> #include <cstdio>…

链接:https://codeforces.com/contest/1173/problem/C 题意: Nauuo is a girl who loves playing cards. One day she was playing cards but found that the cards were mixed with some empty ones. There are nn cards numbered from 11 to nn, and they were mixed with…

B. Game of Credit Cards time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output After the fourth season Sherlock and Moriary have realized the whole foolishness of the battle between them and deci…

题目描述 Programmers working on a large project have just received a task to write exactly mm lines of code. There are nn programmers working on a project, the ii -th of them makes exactly a_{i}ai​ bugs in every line of code that he writes. Let's call a…

Arpa's loud Owf and Mehrdad's evil plan time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output As you have noticed, there are lovely girls in Arpa's land. People in Arpa's land are numbered from 1…

Taxes time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Mr. Funt now lives in a country with a very specific tax laws. The total income of mr. Funt during this year is equal to n (n ≥ 2) bur…