原文链接www.cnblogs.com/zhouzhendong/p/CF1239E.html 前言 咕了这么久之后,我的博客复活了! 题解 结论1 存在一个最优解\(A\)数组,满足\(\forall 1\leq i <n, A_{1,i}\leq A_{1,i+1}, A_{2,i}\geq A_{2,i+1}\) 证明提示:假设 \(A_{1,i} > A_{1,j},i<j\),那么,交换这两个值之后得到的答案严格不劣,另一行证法相同. 结论2 当\(A\)数组满足\(\fora…

F. Xor-Paths time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output There is a rectangular grid of size n×mn×m. Each cell has a number written on it; the number on the cell (i,ji,j) is ai,jai,j.…

A B #include <bits/stdc++.h> #define PI acos(-1.0) #define mem(a,b) memset((a),b,sizeof(a)) #define TS printf("!!!\n") #define pb push_back #define inf 1e9 //std::ios::sync_with_stdio(false); using namespace std; //priority_queue<int,ve…

time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output There is a rectangular grid of size n×mn×m. Each cell has a number written on it; the number on the cell (i,ji,j) is ai,jai,j. Your task is…

Codeforces Round #297 (Div. 2)E. Anya and Cubes Time Limit: 2 Sec  Memory Limit: 512 MBSubmit: xxx  Solved: 2xx 题目连接 http://codeforces.com/contest/525/problem/E Description Anya loves to fold and stick. Today she decided to do just that. Anya has n c…

题目链接:http://codeforces.com/contest/132/problem/C C. Logo Turtle time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A lot of people associate Logo programming language with turtle graphics. In…

传送门 E. Anya and Cubes time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Anya loves to fold and stick. Today she decided to do just that. Anya has n cubes lying in a line and numbered from 1…

题目描述: Prime Gift time limit per test 3.5 seconds memory limit per test 256 megabytes input standard input output standard output Opposite to Grisha's nice behavior, Oleg, though he has an entire year at his disposal, didn't manage to learn how to sol…

Solitaire 题目连接: http://codeforces.com/gym/100231/ Description 给你一个8*8棋盘,里面有4个棋子,每个棋子可以做一下某个操作之一: 1.走向相邻的空格 2.迈过相邻的棋子 然后给你初始状态和结束状态,问你能否得到呢? Input 第一行给你4个初始状态棋子的坐标 第二行给你4个结束状态棋子的坐标 Output 输出能否从初始状态走到结束状态 Sample Input 4 4 4 5 5 4 6 5 2 4 3 3 3 6 4 6 Sa…

Description A lot of people associate Logo programming language with turtle graphics. In this case the turtle moves along the straight line and accepts commands "T" ("turn around") and "F" ("move 1 unit forward"). Y…