A. Maximum Increase time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given array consisting of n integers. Your task is to find the maximum length of an increasing subarray of the gi…

A. Maximum Increase time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given array consisting of n integers. Your task is to find the maximum length of an increasing subarray of the gi…

A. Tennis Tournament 题目连接: http://www.codeforces.com/contest/628/problem/A Description A tennis tournament with n participants is running. The participants are playing by an olympic system, so the winners move on and the losers drop out. The tourname…

C. Cellular Network time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output You are given n points on the straight line — the positions (x-coordinates) of the cities and m points on the same line…

比赛链接:http://codeforces.com/contest/702 A. Maximum Increase A题求连续最长上升自序列. [暴力题] for一遍,前后比较就行了. #include <algorithm> #include <iostream> #include <cstdlib> #include <cstring> #include <cstdio> #include <vector> #include &…

C. Cellular Network time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output You are given n points on the straight line — the positions (x-coordinates) of the cities and m points on the same line…

C. Cellular Network time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output You are given n points on the straight line — the positions (x-coordinates) of the cities and m points on the same line…

A. Maximum Increase time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given array consisting of n integers. Your task is to find the maximum length of an increasing subarray of the gi…

E. Analysis of Pathes in Functional Graph time limit per test 2 seconds memory limit per test 512 megabytes input standard input output standard output You are given a functional graph. It is a directed graph, in which from each vertex goes exactly o…

D. Road to Post Office time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vasiliy has a car and he wants to get from home to the post office. The distance which he needs to pass equals to d ki…

A. Tricky Sum Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/598/problem/A Description In this problem you are to calculate the sum of all integers from 1 to n, but you should take all powers of two with minus in the sum.…

B. New Skateboard 题目连接: http://www.codeforces.com/contest/628/problem/A Description Max wants to buy a new skateboard. He has calculated the amount of money that is needed to buy a new skateboard. He left a calculator on the floor and went to ask som…

传送门 题意 给出n个数,q个询问,每个询问有两个数p,k,询问p+k+a[p]操作几次后超过n 分析 分块处理,在k<sqrt(n)时,用dp,大于sqrt(n)用暴力 trick 代码 #include<cstdio> int n,a[100100],p,k,q,dp[100100][350]; int main() { scanf("%d",&n); for(int i=1;i<=n;++i) scanf("%d",a+i);…

You are given two integers n and k. Find k-th smallest divisor of n, or report that it doesn't exist. Divisor of n is any such natural number, that n can be divided by it without remainder. Input The first line contains two integers n and k (1 ≤ n ≤ …

注意一个词:连续 #include<stdio.h> #include<stdlib.h> #include<string.h> #include<bits/stdc++.h> using namespace std; ]; int main() { //freopen("input.txt","r",stdin); int n; scanf("%d", &n); ; i <= n;…

D. Road to Post Office time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vasiliy has a car and he wants to get from home to the post office. The distance which he needs to pass equals to d ki…

B. Powers of Two time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output You are given n integers a1, a2, ..., an. Find the number of pairs of indexes i, j (i < j) that ai + aj is a power of 2 (i.…

Road to Post Office 题意: 一个人要从0走到d,可以坐车走k米,之后车就会坏,你可以修或不修,修要花t时间,坐车单位距离花费a时间,走路单位距离花费b时间,问到d的最短时间. 题解: 首先要分成k段,k段的总长是ovmod,每一段可以选择修车坐车或选择走路,(只有第一段的时候不用修车),最后在加上剩下的那些路的时间,剩下的是mod,(可以选择修车坐车或选择走路)最后min答案就好了.但其中还有一种情况要注意,就是前ovmod也可以选择坐车之后不修走着,所以这种要特殊处理下.…

Cellular Network 题意: 给n个城市,m个加油站,要让m个加油站都覆盖n个城市,求最小的加油范围r是多少. 题解: 枚举每个城市,二分查找最近的加油站,每次更新答案即可,注意二分的时候不要越界oil数组,上下界都不要越.还有,int坑死人,以后绝对全用long long!!! 代码: #include <bits/stdc++.h> using namespace std; typedef long long ll; const int INF=0x3f3f3f3f; cons…

Powers of Two 题意: 让求ai+aj=2的x次幂的数有几对,且i < j. 题解: 首先要知道,排完序对答案是没有影响的,比如样例7 1一对,和1 7一对是样的,所以就可以排序之后二分找2的x次幂相减的那个数就好了,注意:打表时2的x次幂不能只小于1e9,因为有可能是2个5e8相加,之后就超出了1e9,但是你打表的时候又没有超出1e9的那个2的x次幂,所以答案总是会少几个.所以尽量就开ll 能多打表就多打. 代码: #include <bits/stdc++.h> usin…

这套题最后一题不会,然后先放一下,最后一题应该是大数据结构题 A:求连续最长严格递增的的串,O(n)简单dp #include <cstdio> #include <cstdlib> #include <cstring> #include <cmath> #include <iostream> #include <algorithm> #include <queue> #include <vector> usi…

D. Road to Post Office time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vasiliy has a car and he wants to get from home to the post office. The distance which he needs to pass equals to d ki…

G. List Of Integers time limit per test 5 seconds memory limit per test 256 megabytes input standard input output standard output Let's denote as L(x, p) an infinite sequence of integers y such that gcd(p, y) = 1 and y > x (where gcd is the greatest…

题目链接: http://codeforces.com/contest/660/problem/C 题意: 将最多k个0变成1,使得连续的1的个数最大 题解: 二分连续的1的个数x.用前缀和判断区间[i,i+x-1]里面0的个数是否小于等于k. 代码: #include<iostream> #include<cstdio> #include<vector> #include<cstring> using namespace std; ; int n,k; i…

C. Two strings time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given two strings a and b. You have to remove the minimum possible number of consecutive (standing one after another)…

A. Co-prime Array time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given an array of n elements, you must make it a co-prime array in as few moves as possible. In each move you can i…

Educational Codeforces Round 59 (Rated for Div. 2) D. Compression 题目链接:https://codeforces.com/contest/1107/problem/D 题意: 给出一个n*(n/4)的矩阵,这个矩阵原本是一些01矩阵,但是现在四个四个储存进二进制里面,现在给出的矩阵为0~9以及A~F,表示0~15. 然后问这个矩阵能否压缩为一个(n/x)*(n/x)的矩阵,满足原矩阵中大小为x*x的子矩阵所有数都相等(所有子矩阵构…

Educational Codeforces Round 71 (Rated for Div. 2)-F. Remainder Problem-技巧分块 [Problem Description] ​ 初始\([1,500000]\)都为0,后续有两种操作: ​ \(1\).将\(a[x]\)的值加上\(y\). ​ \(2\).求所有满足\(i\ mod\ x=y\)的\(a[i]\)的和. [Solution] ​ 具体做法就是,对于前\(\sqrt{500000}=708\)个数,定义\(…

Educational Codeforces Round 37 这场有点炸,题目比较水,但只做了3题QAQ.还是实力不够啊! 写下题解算了--(写的比较粗糙,细节或者bug可以私聊2333) A. Water The Garden 题意:给你一个长度为\(n\)的池子,告诉你哪些地方一开始有水, 每秒可以向左和向右增加一格的水, 问什么时候全部充满水.(\(n \le 200\)) 题解:按题意模拟.每次进来一个水龙头,就更新所有点的答案 (取\(min\)).最 后把所有点取个\(max\)就…

Educational Codeforces Round 35 (Rated for Div. 2) https://codeforces.com/contest/911 A 模拟 #include<bits/stdc++.h> using namespace std; #define lson l,mid,rt<<1 #define rson mid+1,r,rt<<1|1 #define IT set<ll>::iterator #define sqr(…