59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
#include <iostream>
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#include <cstdio>
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#include <cstring>
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#include <algorithm>
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using namespace std;
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int head[100050];
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int N,G;
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int c[100050],v[100050],dp[505][10005];
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struct NODE
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{
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int to,next;
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}edge[300000];
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void dfs(int x,int V)
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{
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int i,j,k,to;
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for(i=head[x];i!=-1;i=edge[i].next)
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{
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to=edge[i].to;
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if(head[to] == -1)
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{
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for(j=V;j>=c[to];j--)
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{
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dp[x][j]=max(dp[x][j],dp[x][j-c[to]]+v[to]);
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}
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}
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else
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{
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if(V >= c[to])
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{
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for(j=0;j<=V-c[to];j++) dp[to][j]=dp[x][j];
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dfs(to,V-c[to]);
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for(j=V;j>=c[to];j--)
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{
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dp[x][j]=max(dp[x][j],dp[to][j-c[to]]+v[to]);
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}
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}
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}
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}
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}
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int main()
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{
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while(~scanf("%d %d",&N,&G))
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{
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int i,j,k;
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memset(head,-1,sizeof(head));
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memset(dp,0,sizeof(dp));
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for(i=1;i<=N;i++)
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{
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scanf("%d %d %d",&c[i],&v[i],&j);
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if(i == j) edge[i].to=i,edge[i].next=head[0],head[0]=i;
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else edge[i].to=i,edge[i].next=head[j],head[j]=i;
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}
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c[0]=v[0]=0;
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dfs(0,G);
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int ans=0;
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printf("%d\n",dp[0][G]);
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}
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}
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