链接:https://www.nowcoder.com/acm/contest/104/C来源:牛客网 The Sparrow is for trial, at next bird assizes,we should select a connected subgraph from the whole tree of sparrows as trial objects. Because the relationship between sparrows is too complex, so we
Demacia of the Ancients Time Limit: 2 Seconds Memory Limit: 65536 KB There is a popular multiplayer online battle arena game called Demacia of the Ancients. There are lots of professional teams playing this game. A team will be approved as Level K if
Capture the Flag Time Limit: 2 Seconds Memory Limit: 65536 KB Special Judge In computer security, Capture the Flag (CTF) is a computer security competition. CTF contests are usually designed to serve as an educational exercise to give participants ex
May Day Holiday Time Limit: 2 Seconds Memory Limit: 65536 KB As a university advocating self-learning and work-rest balance, Marjar University has so many days of rest, including holidays and weekends. Each weekend, which consists of Saturday and Sun
Lunch Time Time Limit: 2 Seconds Memory Limit: 65536 KB The 999th Zhejiang Provincial Collegiate Programming Contest will be held in Marjar University. The canteen of Marjar University is making preparations for this grand competition. The canteen pr
Beauty of Array Time Limit: 2 Seconds Memory Limit: 65536 KB Edward has an array A with N integers. He defines the beauty of an array as the summation of all distinct integers in the array. Now Edward wants to know the summation of the beauty of all
Ace of Aces Time Limit: 2 Seconds Memory Limit: 65536 KB There is a mysterious organization called Time-Space Administrative Bureau (TSAB) in the deep universe that we humans have not discovered yet. This year, the TSAB decided to elect an outstandin
Team Formation Time Limit: 3 Seconds Memory Limit: 131072 KB For an upcoming programming contest, Edward, the headmaster of Marjar University, is forming a two-man team from N students of his university. Edward knows the skill level of each student.
problem 很妙啊--发现状态转移矩阵每一行都可以由上一行平移得到,每次只算第一行然后平移,\(O(n^3)\) 就变成了 \(O(n^2)\). #include <iostream> #include <cstdio> using namespace std; int n, k; struct Matrix{ int num[205][205]; Matrix operator*(const Matrix &x)const{ Matrix re; for(int i
Cycle Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 865 Accepted Submission(s): 241 Problem Description Ery is interested in graph theory, today he ask BrotherK a problem about it: Given
Magic boy Bi Luo with his excited tree Problem Description Bi Luo is a magic boy, he also has a migic tree, the tree has N nodes , in each node , there is a treasure, it's value is V[i], and for each edge, there is a cost C[i], which means every time
Alice and Bob Time Limit: 1000ms Memory limit: 65536K 题目描述 Alice and Bob like playing games very much.Today, they introduce a new game. There is a polynomial like this: (a0*x^(2^0)+1) * (a1 * x^(2^1)+1)*.......*(an-1 * x^(2^(n-1))+1). Then Alice as