hdu 1224(最长路)

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1224

我感觉就是求最长上升上升序列

View Code
 1 #include<iostream>
 2 #include<cstring>
 3 using namespace std;
 4 const int MAXN=110;
 5 int n,m;
 6 int dp[MAXN];
 7 int value[MAXN];
 8 int path[MAXN];
 9 bool map[MAXN][MAXN];
10 
11 void Print(int u){
12     if(u==-1)return ;
13     Print(path[u]);
14     printf("%d->",u);
15 }
16 
17 int main(){
18     int _case,k=1;
19     scanf("%d",&_case);
20     while(_case--){
21         scanf("%d",&n);
22         for(int i=1;i<=n;i++){
23             scanf("%d",&value[i]);
24         }
25         value[n+1]=0;
26         scanf("%d",&m);
27         memset(dp,0,sizeof(dp));
28         memset(path,-1,sizeof(path));
29         memset(map,false,sizeof(map));
30         for(int i=1;i<=m;i++){
31             int x,y;
32             scanf("%d%d",&x,&y);
33             map[x][y]=true;
34         }
35         for(int i=2;i<=n+1;i++){
36             for(int j=1;j<i;j++)if(map[j][i]){
37                 if(dp[i]<dp[j]+value[i]){
38                     dp[i]=dp[j]+value[i];
39                     path[i]=j;
40                 }
41             }
42         }
43         path[1]=-1;
44         printf("CASE %d#\n",k++);
45         printf("points : %d\n",dp[n+1]);
46         printf("circuit : ");
47         Print(path[n+1]);
48         printf("1\n");
49         if(_case>0){
50             printf("\n");
51         }
52     }
53     return 0;
54 }
原文地址:https://www.cnblogs.com/wally/p/3006284.html