Submission #749925

#	Time	Username	Problem	Language	Result	Execution time	Memory
749925		Abrar_Al_Samit	Friend (IOI14_friend)	C++17	19 / 100	1 ms	468 KiB

friend

#include "friend.h"
#include <bits/stdc++.h>

using namespace std;


const int nax = 1000;
vector<int>g[nax];
int a[nax];
long long dp[nax][2];

long long dfs(int v, int perm) {
	long long &ret = dp[v][perm];
	if(ret!=-1) return ret;

	ret = 0;

	for(int u : g[v]) {
		ret += dfs(u, 1);
	}

	if(perm) {
		long long an = a[v];
		for(int u : g[v]) {
			an += dfs(u, 0);
		}
		ret = max(ret, an);
	}
	return ret;
}
int findSample(int n,int confidence[],int host[],int protocol[]){
	for(int i=0; i<n; ++i) {
		a[i] = confidence[i];
	}

	for(int i=1; i<n; ++i) {
		g[host[i]].push_back(i);
	}

	memset(dp, -1, sizeof dp);
	return dfs(0, 1);
}

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