简单题,一个一个操作,最后就是答案. #include<cstdio> #include<cstring> #include<cmath> #include<algorithm> using namespace std; +]; long long pre; int n; int main() { scanf("%d",&n); ;i<=n;i++) scanf("%lld",&a[i]); pr…

B. Wilbur and Array Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/596/problem/B Description Wilbur the pig is tinkering with arrays again. He has the array a1, a2, ..., an initially consisting of n zeros. At one step, he…

B. Wilbur and Array time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Wilbur the pig is tinkering with arrays again. He has the array a1, a2, ..., an initially consisting of n zeros. At one…

题目连接:Codeforces 442C Artem and Array 题目大意:给出一个数组,每次删除一个数.删除一个数的得分为两边数的最小值,假设左右有一边不存在则算作0分. 问最大得分是多少. 解题思路:首先将连续的a,b,c,a > b && c > b的情况将c掉,获得min(a,b)分,这样处理后数组变成一个递増再递减的序列,除了最大和第二大的取不到.其它数字均能够得分. 例子:4 10 2 2 8 #include <cstdio> #include…

Codeforces Round #504 D. Array Restoration 题目描述:有一个长度为\(n\)的序列\(a\),有\(q\)次操作,第\(i\)次选择一个区间,将区间里的数全部改为\(i\),序列\(a\)的每个位置至少被改一次.得到最终的序列,然后将序列里的某些位置变成\(0\),输出一种可能的置零之前的最终序列,或无解. solution 求出每种数字最长的染色区间,按这个区间染色,记下没出现的数字.染色后如果存在\(0\)联通块,则用没出现的数字从大到小染色(一个联…

Description Wilbur the pig is tinkering with arrays again. He has the array a1, a2, ..., an initially consisting of n zeros. At one step, he can choose any index i and either add 1 to all elements ai, ai + 1, ... , an or subtract 1 from all elements …

D. Array Division time limit per test:2 seconds memory limit per test:256 megabytes input:standard input output:standard output Vasya has an array a consisting of positive integer numbers. Vasya wants to divide this array into two non-empty consecuti…

A. Lesha and array splitting time limit per test:2 seconds memory limit per test:256 megabytes input:standard input output:standard output One spring day on his way to university Lesha found an array A. Lesha likes to split arrays into several parts.…

$ >Codeforces \space 408 E. Curious Array<$ 题目大意 : 有一个长度为 \(n\) 的序列 \(a\) ,\(m\) 次操作,每一次操作给出 \(l, r, k\) ,使得 \(i \in[l, r]\) 加上 \(i-l+k\choose k\) ,求 \(m\) 次操作后的序列 \(1 \leq n, m \leq 10^5, 0 \leq k \leq 100\) 解题思路 : 观察发现这个操作是加上 \(C_{k+i}^{k}\) 这样的东西…

地址:http://codeforces.com/contest/660/problem/A 题目: 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…