D - 3N Numbers Time limit : 2sec / Memory limit : 256MB Score : 500 points Problem Statement Let N be a positive integer. There is a numerical sequence of length 3N, a=(a1,a2,…,a3N). Snuke is constructing a new sequence of length 2N, a', by removing…

問題文N を 1 以上の整数とします. 長さ 3N の数列 a=(a1,a2,…,a3N) があります. すぬけ君は.a からちょうど N 個の要素を取り除き.残った 2N 個の要素を元の順序で並べ.長さ 2N の数列 a' を作ろうとしています. このとき.a' のスコアを (a'の前半N要素の総和)−(a'の後半N要素の総和) と定義します. a' のスコアの最大値を求めてください. 制約1≤N≤105ai は整数である.1≤ai≤109部分点300 点分のテストケースでは.N≤1,000…

题目链接:http://abc062.contest.atcoder.jp/tasks/arc074_b 题意:给出3*n个数要求去掉n个数使得剩下的前n个数-后n个数的差最大. 题解:显然是一道如果数据小直接dpf[i][j]表示前i个取j个最大是多少,dpe[i][j]后i个取j个最小是多少. 显然转移也是很明显的dpf[i][j]=max(dpf[i][j],dpf[i-1][j-1]+a[i]),dpe[i][j]=min(dpe[i][j],dpe[i+1][j-1]+a[i]); 但…

ARC 074 C - Chocolate Bar 直接枚举第一刀横切竖切,然后另一块要求如果横切分成\(H / 2\)竖切分成\(W/2\)即可 #include <bits/stdc++.h> #define fi first #define se second #define pii pair<int,int> #define mp make_pair #define pb push_back #define space putchar(' ') #define enter…

C - Chocolate Bar 题面 There is a bar of chocolate with a height of H blocks and a width of W blocks. Snuke is dividing this bar into exactly three pieces. He can only cut the bar along borders of blocks, and the shape of each piece must be a rectangle…

题目来源:https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=3&page=show_problem&problem=36  The 3n + 1 problem  Background Problems in Computer Science are often classified as belonging to a certain class of problem…

Problem A: The 3n + 1 problem Time Limit: 1 Sec  Memory Limit: 64 MBSubmit: 14  Solved: 6[Submit][Status][Web Board] Description Consider the following algorithm to generate a sequence of numbers. Start with an integer n. If n is even, divide by 2. I…

The 3n + 1 problem Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 53927   Accepted: 17142 Description Problems in Computer Science are often classified as belonging to a certain class of problems (e.g., NP, Unsolvable, Recursive). In th…

 The 3n + 1 problem  Background Problems in Computer Science are often classified as belonging to a certain class of problems (e.g., NP, Unsolvable, Recursive). In this problem you will be analyzing a property of an algorithm whose classification is…

这是一道很坑爹的题,一定注意输入的两个数的大小,并且不能简单的交换,因为在最后的输出的时候还需要将原来的数按照原来的顺序和大小,这就是为什么还得开辟两个值得原因 Description Problems in Computer Science are often classified as belonging to a certain class of problems (e.g., NP, Unsolvable, Recursive). In this problem you will be…