codeforces 568C New Language 题解 CF568C 题 一眼2-SAT,字典序最小就贪心,然后全是细节。 根据贪心从左到右逐位考虑,虽然看起来后面对前面会有限制,但是通过 2-SAT 转成前面对后面的限制了。如果前面每一位都是顶上界的(和给定字符串相等)首选就是对应字符串的那一位,否则就是a。 但这样很可能是不合法...
int frm[maxm],pre[maxm],now[maxn],son[maxm],tot,tim,dfn[maxn],low[maxn],bel[maxn],bcnt,last,top,q[maxn]; bool ins[maxn]; void clear(){memset(now,0,sizeof(now)),tot=0;} void add(int a,int b){pre[++tot]=now[a],now[a]=tot,son[tot]=b,frm[tot]=a;} void ad...
4.3 参加编程竞赛 (Participating in Coding Competitions) 参加一些编程竞赛可以提升你的编程能力和解决问题的能力。你可以在网上找到许多编程平台,如LeetCode、Codeforces等。 5. 深入学习C语言的高级特性 (Deepening the Study of Advanced Features of C Language) 在掌握了C语言的基础知识后,可以进一步学习一些高级特...
Unknown Language Round 4: Befunge → Virtual participation Virtual contest is a way to take part in past contest, as close as possible to participation on time. It is supported only ICPC mode for virtual contests. If you've seen these problems, a virtual contest is not for you - solve...
Codeforces Round #650 (Div. 3) E. Necklace Assembly(枚举+二分) 题目链接:https://codeforces.com/contest/1367/problem/E 思路: 不难想象,这是一道跟循环节有关的问题。k是necklace的周期,这个说法等价于存在k的因数d,使得d是整条necklace的周期。这样,问题转化如下:构造循环节长度为d的necklace,使得其...
WHAT BASE AND/XOR LANGUAGE INCLUDES string? DON'T BYTE OF MORE THAN YOU CAN CHEW YOU CAN ONLY DISTORT THE LARGEST OF MATHEMATICS SO FAR SAYING "ABRACADABRA" WITHOUT A MAGIC AND WON'T DO YOU ANY GOOD THE LAST STACK RUPTURES. ALL DIE. OH, THE EMBARRASSMENT! I HAVE NO ARRAY AND I MUS...
A program in this language always takes one non-negative integer and returns one non-negative integer as well. In the language, there are only three commands: apply a bitwise operation AND, OR or XOR with a given constant to the current integer. A program can contain an arbitrary sequence ...
codeforces1216C (矩形面积交) 题意描述给定一块白色矩形和两块黑色矩形和一块白色矩形,询问两块黑色矩形是否能够覆盖到白色矩形思路我们从面积的角度来考虑,要想完全覆盖,那么需要分别计算两个黑色矩形与白色矩形相交的面积,再减去两个黑色矩形相交的面积...,最后判断计算所得的面积是否大于白色矩形的面积。 49110 ...
5) 《C程序设计语言，The C Programming Language》C语言创始人丹尼斯·里奇（DennisMacAlistair Ritchie）...
C*++ language is quite similar to C++. The similarity manifests itself in the fact that the programs written in C*++ sometimes behave unpredictably and lead to absolutely unexpected effects. For example, let's imagine an arithmetic expression in C*++ that looks like this (expression is the ...