D. Max and Bike Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/595/problem/D Description For months Maxim has been coming to work on his favorite bicycle. And quite recently he decided that he is ready to take part in a cy…

D. Max and Bike For months Maxim has been coming to work on his favorite bicycle. And quite recently he decided that he is ready to take part in a cyclists' competitions. He knows that this year n competitions will take place. During the i-th competi…

// Codeforces Round #365 (Div. 2) // C - Chris and Road 二分找切点 // 题意:给你一个凸边行,凸边行有个初始的速度往左走,人有最大速度,可以停下来,竖直走. // 问走到终点的最短时间 // 思路: // 1.贪心来做 // 2.我觉的二分更直观 // 可以抽象成:一条射线与凸边行相交,判断交点.二分找切点 #include <bits/stdc++.h> using namespace std; #define LL long lon…

C. Edo and Magnets Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/594/problem/C Description Edo has got a collection of n refrigerator magnets! He decided to buy a refrigerator and hang the magnets on the door. The shop ca…

传送门 https://codeforces.com/contest/1496/problem/B 题目 Example input 5 4 1 0 1 3 4 3 1 0 1 4 3 0 0 1 4 3 2 0 1 2 3 2 1 2 3 output 4 4 3 5 3 Note In the first test case, S={0,1,3,4}S={0,1,3,4}, a=mex(S)=2a=mex⁡(S)=2, b=max(S)=4b=max(S)=4, ⌈a+b2⌉=3⌈a+b2⌉…

题意: 这道英文题的题意稍稍有点复杂. 找长度为n的数字序列有多少种.这个序列可以分为n/k段,每段k个数字.k个数可以变成一个十进制的数Xi.要求对这每n/k个数,剔除Xi可被ai整除的情况,剔除X的第一个数(包括前导0)是bi的情况.问剩下的组合有多少种. 思路: 这题我是一波三折的.首先也没有考虑很多,看着可以暴力模拟过程,我就直接开始敲了,几个for循环敲出来,再把bug调一调和特殊情况考虑考虑,交了之后开始TLE,这时候意识到复杂度太大了,于是开始优化,做了(b[i])*(mmax/1…

题意:给你很多对数,要么是0要么是1.不全0则ans++. 思路即题意. #include<cstdio> #include<cstring> #include<iostream> using namespace std; #define MAX(x,y) (((x)>(y)) ? (x) : (y)) #define MIN(x,y) (((x) < (y)) ? (x) : (y)) #define ABS(x) ((x)>0?(x):-(x))…

A. Warrior and Archer Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/594/problem/A Description In the official contest this problem has a different statement, for which jury's solution was working incorrectly, and for this…

B. Pasha and Phone Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/595/problem/B Description Pasha has recently bought a new phone jPager and started adding his friends' phone numbers there. Each phone number consists of ex…

A. Vitaly and Night Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/595/problem/A Description One day Vitaly was going home late at night and wondering: how many people aren't sleeping at that moment? To estimate, Vitaly de…