Submission #13259

#	Time	Username	Problem	Language	Result	Execution time	Memory
13259		dohyun0324	Biochips (IZhO12_biochips)	C++98	100 / 100	421 ms	407760 KiB

biochips

#include<stdio.h>
#include<vector>
#include<algorithm>
using namespace std;
vector<int>con[200010];
int p,pos[200010],arr[200010],n,m,a[200010],d[200010][510],w=1;
void dfs(int x)
{
    int i,j;
    arr[x]=w;
    for(i=0;i<con[x].size();i++) dfs(con[x][i]);
    w++;
    pos[w]=x;
    for(i=1;i<=m;i++) d[w][i]=max(d[w][i],d[w-1][i]);
    for(i=1;i<=m;i++) d[w][i]=max(d[w][i],d[arr[x]][i-1]+a[x]);
}
int main()
{
    int i,j,x,y;
    scanf("%d %d",&n,&m);
    for(i=0;i<=n;i++){
        for(j=1;j<=m;j++){
            d[i][j]=-2147483647;
        }
    }
    for(i=1;i<=n;i++)
    {
        scanf("%d %d",&x,&y);
        if(x==0) p=i;
        con[x].push_back(i);
        a[i]=y;
    }
    dfs(p);
    printf("%d",d[w][m]);
    return 0;
}

• Subtask 1: 100 / 100