思路: 暴力枚举. 实现: #include <iostream> #include <cstdio> using namespace std; typedef long long ll; ll m, b; int main() { cin >> m >> b; ll maxn = ; ; i <= m * b; i++) { ll j = - i / m + b; ) { ll ans = (i + ) * (j + ) * (i + j) / ;…
B. Okabe and Banana Trees time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Okabe needs bananas for one of his experiments for some strange reason. So he decides to go to the forest and cut…
A. Okabe and Future Gadget Laboratory time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Okabe needs to renovate the Future Gadget Laboratory after he tried doing some crazy experiments! The…
A Okabe and Future Gadget Laboratory 暴力 #include<bits/stdc++.h> using namespace std; typedef long long int LL; const LL N=51,M=1,MOD=1; int num[N][N]; int main() { ios::sync_with_stdio(false); //freopen("t.txt","r",stdin); int n;…
Description Consider a tropical forrest, represented as a matrix. The cell from the right top corner of the matrix has the coordinates (1,1), and the coordinates of the other cells are determinated by the row and the column on which the cell is. In s…
For a undirected graph with tree characteristics, we can choose any node as the root. The result graph is then a rooted tree. Among all possible rooted trees, those with minimum height are called minimum height trees (MHTs). Given such a graph, write…
Given n, how many structurally unique BST's (binary search trees) that store values 1...n? For example,Given n = 3, there are a total of 5 unique BST's. 1 3 3 2 1 \ / / / \ \ 3 2 1 1 3 2 / / \ \ 2 1 2 3 这道题实际上是Catalan Number卡塔兰数的一个例子,如果对卡塔兰数不熟悉的童鞋可能真…
Given n, generate all structurally unique BST's (binary search trees) that store values 1...n. For example,Given n = 3, your program should return all 5 unique BST's shown below. 1 3 3 2 1 \ / / / \ \ 3 2 1 1 3 2 / / \ \ 2 1 2 3 confused what "{1,#,2…
Given n, generate all structurally unique BST's (binary search trees) that store values 1...n. For example, Given n = 3, your program should return all 5 unique BST's shown below. 1 3 3 2 1 \ …
http://staff.city.ac.uk/~ross/papers/FingerTree.html Summary We present 2-3 finger trees, a functional representation of persistent sequences supporting access to the ends in amortized constant time, and concatenation and splitting in time logarithmi…
Given n, how many structurally unique BST's (binary search trees) that store values 1...n? For example, given n = 3, there are a total of 5 unique BST's. 1 3 3 2 1 \ / / / \ \ 3 2 1 1 …
Given n, how many structurally unique BST's (binary search trees) that store values 1...n? For example,Given n = 3, there are a total of 5 unique BST's. 1 3 3 2 1 \ / / / \ \ 3 2 1 1 3 2 / / \ \ 2 1 2 3 Tree Dynamic Programming 如果集合为空,只有一种BST,即空树…
题目链接 http://codeforces.com/contest/711/problem/C Description ZS the Coder and Chris the Baboon has arrived at Udayland! They walked in the park where n trees grow. They decided to be naughty and color the trees in the park. The trees are numbered wit…
Unique Binary Search Trees II Given n, generate all structurally unique BST's (binary search trees) that store values 1...n. For example,Given n = 3, your program should return all 5 unique BST's shown below. 1 3 3 2 1 \ / / / \ \ 3 2 1 1 3 2 / / \ \…
Get Many Persimmon Trees Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 3243 Accepted: 2113 Description Seiji Hayashi had been a professor of the Nisshinkan Samurai School in the domain of Aizu for a long time in the 18th century. In orde…
Given two Binary Search Trees, find common nodes in them. In other words, find intersection of two BSTs. Example: from: http://www.geeksforgeeks.org/print-common-nodes-in-two-binary-search-trees/ Method 1 (Simple Solution) A simple way is to one by o…
