Submission #29411

#	Time	Username	Problem	Language	Result	Execution time	Memory
29411		cki86201	Friend (IOI14_friend)	C++11	35 / 100	0 ms	4752 KiB

friend

#include "friend.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <memory.h>
#include <math.h>
#include <assert.h>
#include <queue>
#include <map>
#include <set>
#include <string>
#include <algorithm>
#include <iostream>
#include <functional>
#include <unordered_map>
#include <unordered_set>
#include <list>
#include <bitset>

using namespace std;
typedef pair<int, int> pii;
typedef long long ll;
#define Fi first
#define Se second
#define pb(x) push_back(x)
#define sz(x) ((int)(x).size())
#define rep(i, n) for(int i=0;i<n;i++)
#define all(x) (x).begin(), (x).end()
typedef tuple<int, int, int> t3;
typedef pair<ll, ll> Pll;
typedef long double ldouble;

int par[100010];
int D[100010][2];
int p[100010];
int Find(int x) { return p[x] == x ? x : p[x] = Find(p[x]); }

int findSample(int n,int confidence[],int host[],int protocol[]){
    rep(i, n) par[i] = -1, p[i] = i;
    for(int i=n-1;i;i--) {
        int h = host[i], c = protocol[i];
        if(c == 0) par[i] = h;
        else if(c == 1) confidence[h] += confidence[i], p[i] = h;
        else if(c == 2) confidence[h] = max(confidence[h], confidence[i]), p[i] = h;
    }
    
    for(int i=n-1;i>=0;i--) if(par[i] != -1 && p[i] == i) {
        D[i][1] += confidence[i];
        D[Find(par[i])][0] += max(D[i][0], D[i][1]);
        D[Find(par[i])][1] += D[i][0];
    }
    D[0][1] += confidence[0];
    return max(D[0][0], D[0][1]);
}

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