Submission #430631

#	Time	Username	Problem	Language	Result	Execution time	Memory
430631		Rouge_Hugo	Friend (IOI14_friend)	C++14	0 / 100	3 ms	588 KiB

friend

#include "friend.h"
#include<bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define pb push_back
using namespace std;
const int N=1009;
vector<int>v[N];
int vis[N][2],a[N];
int dfs(int x,int p)
{
    vis[x][1]=a[x];
    for(auto it:v[x])
    {
        if(it==p)continue;
        dfs(it,x);
        vis[x][0]+=vis[it][1];
        vis[x][1]+=vis[it][0];
    }
    vis[x][1]=max(vis[x][1],vis[x][0]);
}
int findSample(int n,int c[],int h[],int p[]){
	for(int i=0;i<n-1;i++)
    {
        v[h[i]].pb(i-1);
        v[i-1].pb(h[i]);
    }
    for(int i=0;i<n;i++)a[i]=c[i];
    dfs(0,0);
    vis[0][0]=max(vis[0][0],vis[0][1]);
    return vis[0][0];
}
/*
5
1 100 1 1 100
0 0
0 0
1 1
2 2
*/

Compilation message (stderr)

friend.cpp: In function 'int dfs(int, int)':
friend.cpp:22:1: warning: no return statement in function returning non-void [-Wreturn-type]
   22 | }
      | ^

• Subtask 1: 0 / 11
• Subtask 2: 0 / 8
• Subtask 3: 0 / 8
• Subtask 4: 0 / 19
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31