Coloring Colorfully】的更多相关文章

问题 C: Coloring Colorfully 时间限制: 1 Sec  内存限制: 128 MB[提交] [状态] 题目描述 N块瓦片从左到右排成一行.每个块的初始颜色由长度为N的字符串S表示. 如果S的第i个字符为0,则左边的第i个平铺将被漆成黑色,如果该字符为1,则漆成白色. 你想重新油漆一些瓷砖黑色或白色,使任何两个相邻的瓷砖有不同的颜色. 至少需要重新粉刷多少瓷砖才能满足条件? Constraints 1≤|S|≤105 Si is 0 or 1. 输入 Input is give…
心态爆炸.本来能全做出来的.但是由于双开了Comet oj一个比赛,写了ABC就去搞那个的B题 还被搞死了. 回来写了一会D就过了.可惜比赛已经结束了.真的是作死. A - Buttons #include <cstdio> using namespace std; int main() { int x, y; scanf("%d%d", &x, &y); int ans = x > y ? x : y; if (x > y) x--; else…
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…
题意:给括号匹配涂色,红色蓝色或不涂,要求见原题,求方案数 区间DP 用栈先处理匹配 f[i][j][0/1/2][0/1/2]表示i到ji涂色和j涂色的方案数 l和r匹配的话,转移到(l+1,r-1) 不匹配,i的匹配p一定在l和r之间,从p分开转移 听说用记忆化搜索比较快,可以像树形DP那样写记忆化搜索,也可以传统的四个参数那样写 用循环+条件判断,简化状态转移的枚举 注意细节 见代码 #include<iostream> #include<cstdio> #include&l…
C. Coloring Trees   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 with integers from 1 to n from left to right…
题目链接:C. Coloring Trees 题意:给出n棵树的颜色,有些树被染了,有些没有.现在让你把没被染色的树染色.使得beauty = k.问,最少使用的颜料是多少.   K:连续的颜色为一组,一共有多少组. 颜料用量:p[i][j]表示第i棵树用颜料j染色 需要p[i][j]颜料. 思路:DP. dp方程:dp[i][j][k] = a 表示前i棵树beauty = j,且第j棵树染色为k时,需要的最少颜料为a. 状态转移:初始化第一棵树dp[1][1][col[1]or(1~m)].…
Coloring Brackets time limit per test: 2 seconds memory limit per test: 256 megabytes input: standard input output: standard output Once Petya read a problem about a bracket sequence. He gave it much thought but didn't find a solution. Today you will…
传送门:http://codeforces.com/problemset/problem/711/C 题目: C. Coloring Trees time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output ZS the Coder and Chris the Baboon has arrived at Udayland! They wal…
题目链接: C. Coloring Trees time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output ZS the Coder and Chris the Baboon has arrived at Udayland! They walked in the park where n trees grow. They decided…
Graph Coloring Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 4893   Accepted: 2271   Special Judge Description You are to write a program that tries to find an optimal coloring for a given graph. Colors are applied to the nodes of the…