Mr.RainsdRop的胡思乱想

链接：https://codeforces.com/problemset/problem/1471/B题目You have given an array a of length n and an integer x to a brand new robot. What the robot does is the following: it iterates over the elements of the array, let the current element be q. If q is divi

题目Polycarp likes to play with numbers. He takes some integer number x, writes it down on the board, and then performs with it n−1 operations of the two kinds:divide the number x by 3 (x must be divisible by 3);multiply the number x by 2.After each op

链接：https://vjudge.net/problem/CodeForces-977C题目You are given a sequence of integers of length n and integer number k. You should print any integer number x in the range of [1;10^9] (i.e. 1≤x≤10^9) such that exactly k elements of given sequence are less t

链接：https://vjudge.net/problem/CodeForces-976A题目String can be called correct if it consists of characters “0” and “1” and there are no redundant leading zeroes. Here are some examples: “0”, “10”, “1001”.You are given a correct string s.You can perform t

链接：https://ac.nowcoder.com/acm/contest/9667/E题目牛牛经常在数学课上睡觉，所以他的数学非常烂。别人的数学都是进位加法， 但是他的却是非进位加法，比如 7+7 = 4， 22+84 = 6现在牛牛想考验你一下， 给你两个非常大的数，计算他们的和。输入第一行一个整数 a ( a ≥ 0 and |a| ≤ 2e5)；第二行一个整数 b ( b ≥ 0 and |b| ≤ 2e5)；输出输出一个数 c ， c = a + b思路状态不佳，在最后

链接：Codeforce965—A题传送门题目To make a paper airplane, one has to use a rectangular piece of paper. From a sheet of standard size you can make s airplanes.A group of k people decided to make n airplanes each. They are going to buy several packs of paper, each

链接：https://ac.nowcoder.com/acm/contest/9033/B思路A题真的就属于看懂而就是A不掉，总是缺点什么。不过机(F)智(W)如我，很快啊，我就把罪恶的眼光看向了B题。B题就很有趣了，题意十分清楚，就是依据题中给出的规则，最多能够得到几个不同的数字。不同的数字是这个题的关键，怎么才会形成不同的数字就是我们要考虑的。我们首先考虑C1是0的时候，由于题目中是这样说的：如果c_i = 0，并且 i>1 ，那么a_i = a_{i-1}。所以我们可以得到，

链接：https://vjudge.net/problem/CodeForces-960B题意输入第一行的三个数字分别代表：n（每组各有n个数字，共有2组），k1（对第一组的操作次数），k2（对第二组的操作次数）。所谓操作就是对一个数字进行 +1 或 -1 。操作k1+k2次之后对两个数组进行以下操作：for(int i=0;i<n;i++) sum+=(a[i]-b[i])*(a[i]-b[i]);求这个sum的最小值。思路状态不是很好，主要是自己作了一个死（没想到会出现那

题目A has a string consisting of some number of lowercase English letters ‘a’. He gives it to his friend B who appends some number of letters ‘b’ to the end of this string. Since both A and B like the characters ‘a’ and ‘b’, they have made sure that at this

链接：https://vjudge.net/problem/CodeForces-950A题意现在有一场保龄球比赛，教练需要组建一支人数为偶数的队伍。现在教练手上有l个左撇子选手，r个右撇子选手，a个全能人（两只手都可以用）。现在教练希望他的队伍里用左手的人数等于用右手的人数。问你这支队伍最多能有多少人？队伍里可能一个都没有（这个情况允许存在）。思路CF比赛的前2~3个题一般来说都是思维题，基本上有想法就能过。（所以我经常死在没想法的路上/(ㄒoㄒ)/）首先我们考虑左撇子右撇子一样多，那