B. Worms time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output It is lunch time for Mole. His friend, Marmot, prepared him a nice game for lunch. Marmot brought Mole n ordered piles of worms such…

D. Flowers time limit per test 1.5 seconds memory limit per test 256 megabytes input standard input output standard output We saw the little game Marmot made for Mole's lunch. Now it's Marmot's dinner time and, as we all know, Marmot eats flowers. At…

A. Keyboard time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Our good friend Mole is trying to code a big message. He is typing on an unusual keyboard with characters arranged in following…

Codeforces Round #271 (Div. 2) A - Keyboard 题意 给你一个字符串,问你这个字符串在键盘的位置往左边挪一位,或者往右边挪一位字符,这个字符串是什么样子 题解 模拟一下就好了 代码 #include<bits/stdc++.h> using namespace std; string s[3]; map<char,int>r,c; char ss[2][107]; int main() { s[0]="qwertyuiop"…

Codeforces Round #539 div2 abstract I 离散化三连 sort(pos.begin(), pos.end()); pos.erase(unique(pos.begin(), pos.end()), pos.end());if (pos.size() == 0) pos.push_back(0);int id = lower_bound (pos.begin(), pos.end(), q[i].time) - pos.begin(); II java输入输出带模…

[第3站]Codeforces Round #512 Div2 第三题莫名卡半天……一堆细节没处理,改一个发现还有一个……然后就炸了,罚了一啪啦时间 Rating又掉了……但是没什么,比上一次好多了:) +传送门+ ◇ 简单总结 前两道题非常OK,秒掉还好.心态爆炸是从第三题开始的……一开始设计的判断方法没有考虑0,然后就错了很多次,然后改了过后又没有考虑整个数要分成2个及以上的数,继续WA,最后整个程序删了重新魔改了一次终于AC.感觉最后的AC代码的复杂度要比原来高一些,但是毕竟AC了,还是不…

Codeforces Round#320 Div2 先做个标题党,骗骗访问量,结束后再来写咯. codeforces 579A Raising Bacteria codeforces 579B Finding Team Member codeforces 579C A Problem about Polyline codeforces 579D "Or" Game codeforces 579E Weakness and Poorness codeforces 579F LCS Aga…

Codeforces Round #564(div2) 本来以为是送分场,结果成了送命场. 菜是原罪 A SB题,上来读不懂题就交WA了一发,代码就不粘了 B 简单构造 很明显,\(n*n\)的矩阵可以按照这个顺序排列 然后根据\(n\)的大小搞一搞就好了 #include<cstdio> #include<cctype> #include<cstring> #include<algorithm> #include<iostream> #incl…

ProblemA(Codeforces Round 689A): 题意: 给一个手势, 问这个手势是否是唯一. 思路: 暴力, 模拟将这个手势上下左右移动一次看是否还在键盘上即可. 代码: #include <cmath> #include <cstdio> #include <cstring> #include <cstdlib> #include <ctime> #include <set> #include <map>…

比赛链接: Codeforces Round #626 (Div. 2, based on Moscow Open Olympiad in Informatics) D.Present 题意: 给定大小为$n$的a数组,求下面式子的结果: $$ (a_1 + a_2) \oplus (a_1 + a_3) \oplus \ldots \oplus (a_1 + a_n) \\ \oplus (a_2 + a_3) \oplus \ldots \oplus (a_2 + a_n) \\ \ldot…