Submission #422231

#	Time	Username	Problem	Language	Result	Execution time	Memory
422231		Ozy	Friend (IOI14_friend)	C++17	0 / 100	1 ms	384 KiB

friend

#include "friend.h"
#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for (int i = (a); i <= (b); i++)
#define repa(i,a,b) for (int i = (a); i >= (b); i--)
#define lli long long int
#define debugsl(a) cout << #a << " = " << a << ", "
#define debug(a) cout << #a << " = " << a << endl

lli pares, impares;
vector<lli> hijos[1002];
lli conf[1002];

void DFS(lli pos, lli padre, lli prof) {

    if (prof%2 == 0) pares += conf[pos];
    else impares += conf[pos];

    for (auto h : hijos[pos]) {
        if (h == padre) continue;
        DFS(h,pos,prof+1);
    }
}

int findSample(int n,int confidence[],int host[],int protocol[]){

    rep(i,1,n-1) {
        hijos[i].push_back(host[i]);
        hijos[host[i]].push_back(i);
    }
    rep(i,0,n-1) conf[i] = confidence[i];

    pares = 0;
    impares = 0;
    DFS(0,0,0);

    pares = max(pares,impares);
    return pares;
}

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