http://codeforces.com/problemset/problem/520/A A. Pangram time limit per test 2 seconds memory limit per test 256 megabytes input:standard input output:standard output A word or a sentence in some language is called a pangram if all the characters of…
http://codeforces.com/problemset/problem/520/B B. Two Buttons time limit per test 2 seconds memory limit per test 256 megabytes input:standard input output:standard output Vasya has found a strange device. On the front panel of a device there are: a…
A. Pangram time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A word or a sentence in some language is called a pangram if all the characters of the alphabet of this language appear in it at…
D. Fun with Integers 题目链接:https://codeforc.es/contest/1062/problem/D 题意: 给定一个n,对于任意2<=|a|,|b|<=n,如果a->b,则存在一个x,使得x*a=b 或者 x*b=a,那么最终答案就是|x|的总和.相同的a,b不能被重复转化. 题解: 哎,这个复制过来格式各种错误,还是就这样吧... 我们发现当a->b时,-a->b,-a->-b,a->-b中的x对答案的贡献都是一样的,所以我…
C. Banh-mi time limit per test:1 second memory limit per test:256 megabytes 题目链接:https://codeforc.es/contest/1062/problem/C Description: JATC loves Banh-mi (a Vietnamese food). His affection for Banh-mi is so much that he always has it for breakfast.…
B. Math time limit per test:1 second memory limit per test:256 megabytes Description: JATC's math teacher always gives the class some interesting math problems so that they don't get bored. Today the problem is as follows. Given an integer n, you can…
A. A Prank time limit per test 1 second memory limit per test 256 megabytes 题目链接:https://codeforc.es/contest/1062/problem/A Description: JATC and his friend Giraffe are currently in their room, solving some problems. Giraffe has written on the b…
Spiral Maximum 题目连接: http://codeforces.com/problemset/problem/173/C Description Let's consider a k × k square, divided into unit squares. Please note that k ≥ 3 and is odd. We'll paint squares starting from the upper left square in the following orde…
http://codeforces.com/contest/738/problem/D Galya is playing one-dimensional Sea Battle on a 1 × n grid. In this game a ships are placed on the grid. Each of the ships consists of bconsecutive cells. No cell can be part of two ships, however, the shi…
http://codeforces.com/contest/738/problem/C Vasya is currently at a car rental service, and he wants to reach cinema. The film he has bought a ticket for starts in t minutes. There is a straight road of length s from the service to the cinema. Let's…
http://codeforces.com/contest/738/problem/A Polycarp has interviewed Oleg and has written the interview down without punctuation marks and spaces to save time. Thus, the interview is now a string s consisting of n lowercase English letters. There is…
