题目大意 给定一个包含n(n<=100)个点的无向连通图和一个长度为L的序列A(L<=200),你的任务是修改尽量少的数,使得序列中的任意两个相邻的数或者相同,或者对应图中两个相邻结点 题解 妈蛋,这么水的题目想不出来,然后搜了下解题报告,瞬间觉得巨水啊....智商拙计啊 用dp[i][j]表示前i个数并且以数字j结尾的序列需要修改的最少次数,那么如果j等于a[i]那么dp[i][j]=min(dp[i-1][k]),否则的话dp[i][j]=min(dp[i-1][k]+1)(j==k或者j…

题目传送门 /* 题意:给定包含n个点的无向图和一个长度为L的序列,修改尽量少的点使得相邻的数字相同或连通 DP:状态转移方程:dp[i][j] = min (dp[i][j], dp[i-1][k] + (j != a[i])); dp[i][j]表示前i个数字以j结尾的最小花费.我自己写了很长时间,很复杂,状态转移的不好. 应该能知道前一个状态的所有情况,每一维数组记录的就是一个状态 */ /************************************************ A…

题意:给一个无向连通图,和一个序列,修改尽量少的数,使得相邻两个数要么相等,要么相邻. 析:dp[i][j] 表示第 i 个数改成 j 时满足条件.然后就很容易了. 代码如下: #pragma comment(linker, "/STACK:1024000000,1024000000") #include <cstdio> #include <string> #include <cstdlib> #include <cmath> #inc…

http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=4170 d[i,j]前i个字符j结尾 d[i,j]=min{d[i-1,k], j和k有边}+(a[i]!=j) 初始化d[1,j]=1, d[1,a[1]]=0 #include <cstdio> #include <cstring> #include <cma…

d(i, j)表示使前i个数满足要求,而且第i个数值为j的最小改动次数. d(i, j) = min{ d(i-1, k) | k == j | G[j][k] } #include <cstdio> #include <cstring> #include <algorithm> using namespace std; + ; int n, m, k; int a[maxn]; int d[maxn][maxn]; bool G[maxn][maxn]; int ma…

Salesmen Time Limit:3000MS     Memory Limit:0KB     64bit IO Format:%lld & %llu Submit Status Practice UVA 1424 Traveling salesmen of nhn. (the prestigious Korean internet company) report their current location to the company on a regular basis. They…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=6447 Problem DescriptionYJJ is a salesman who has traveled through western country. YJJ is always on journey. Either is he at the destination, or on the way to destination.One day, he is going to travel…

Traveling salesmen of nhn. (the prestigious Korean internet company) report their current location to the company on a regular basis. They also have to report their new location to the company if they are moving to another location. The company keep…

2018CCPC网络赛 J - YJJ's Salesman HDU - 6447 YJJ is a salesman who has traveled through western country. YJJ is always on journey. Either is he at the destination, or on the way to destination. One day, he is going to travel from city A to southeastern…

Salesmen Time Limit: 3000ms Memory Limit: 131072KB This problem will be judged on UVALive. Original ID: 425664-bit integer IO format: %lld      Java class name: Main   Traveling salesmen of nhn. (the prestigious Korean internet company) report their…