oj.uz

답안 #297928

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
297928 2020-09-12T07:56:24 Z Plurm 친구 (IOI14_friend) C++11
35 / 100
 4 ms 5280 KB 
#include "friend.h"
#include <bits/stdc++.h>
using namespace std;

vector<int> g[100005];
vector<int> sg[100005];
int rn[100005];
int dp[100005][2]; // dp[u][including u?]
void dfs(int u, int* confidence, int p = -1){
	for(int v : g[u]){
		dfs(v, confidence, u);
	}
	for(int v : sg[u]){
		dfs(v, confidence, u);
	}
	// compute dp[u][0]
	for(int v : g[u]){
		dp[u][0] += max(dp[v][0], dp[v][1]);
	}
	// compute dp[u][1]
	dp[u][1] = confidence[u];
	for(int v : sg[u]){
		dp[u][1] += max(dp[v][0], dp[v][1]);
	}
	for(int v : g[u]){
		dp[u][1] += dp[v][0];
	}
}
// Find out best sample
int findSample(int n,int confidence[],int host[],int protocol[]){
	for(int i = 0; i < n; i++) rn[i] = i;
	for(int i = 1; i < n; i++){
		switch(protocol[i]){
		case 0:
			g[rn[host[i]]].push_back(i);
			break;
		case 1:
			sg[rn[host[i]]].push_back(i);
			break;
		case 2:
			rn[i] = rn[host[i]];
			confidence[rn[host[i]]] = max(confidence[rn[host[i]]], confidence[i]);
			break;
		}
	}
	dfs(0, confidence);
	return max(dp[0][0], dp[0][1]);
}

Subtask #1
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Incorrect 3 ms 4992 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 5024 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 5120 KB Output is correct
9 Correct 4 ms 5120 KB Output is correct
10 Correct 4 ms 5120 KB Output is correct

Subtask #3
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct

Subtask #4
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 3 ms 4992 KB Output is correct
5 Correct 4 ms 5280 KB Output is correct
6 Correct 4 ms 5120 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 5120 KB Output is correct
9 Correct 3 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 4 ms 5120 KB Output is correct
13 Correct 4 ms 5248 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 5120 KB Output is correct

Subtask #5
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 4992 KB Output is correct
9 Correct 4 ms 5120 KB Output is correct
10 Correct 4 ms 5120 KB Output is correct
11 Incorrect 4 ms 4992 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Incorrect 4 ms 4992 KB Output isn't correct
8 Halted 0 ms 0 KB -