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Submission #154701

# Submission time Handle Problem Language Result Execution time Memory
154701 2019-09-23T15:29:17 Z dolphingarlic Friend (IOI14_friend) C++14
27 / 100
 6 ms 2936 KB 
#include <bits/stdc++.h>
using namespace std;

#include "friend.h"

int colour[100001], dp[2][100001], c[100001];
vector<int> graph[100001];

void dfs(int node) {
	int curr = 0;
	dp[0][node] = c[node];
	for (int i : graph[node]) {
		dfs(i);
		if (!colour[i]) dp[1][node] += dp[0][i], dp[0][node] += dp[1][i];
		else dp[0][node] += dp[0][i], curr += dp[1][i];
	}
	curr += dp[1][node];
	dp[0][node] = max(dp[0][node], curr);

	for (int i : graph[node]) {
		if (!colour[i]) curr += dp[1][i] - dp[0][i];
		else curr += dp[0][i] - dp[1][i];
		dp[0][node] = max(dp[0][node], curr);
	}
}

int findSample(int n, int confidence[], int host[], int protocol[]) {
	c[0] = confidence[0];
    for (int i = 1; i < n; i++) {
		c[i] = confidence[i];
		colour[i] = protocol[i];
		graph[host[i]].push_back(i);
	}
	dfs(0);
    return dp[0][0];
}

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 2680 KB Output is correct
2 Correct 4 ms 2680 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 4 ms 2680 KB Output is correct
6 Correct 4 ms 2684 KB Output is correct
7 Incorrect 4 ms 2680 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 5 ms 2680 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 5 ms 2808 KB Output is correct
5 Correct 5 ms 2808 KB Output is correct
6 Correct 4 ms 2680 KB Output is correct
7 Correct 4 ms 2680 KB Output is correct
8 Correct 5 ms 2808 KB Output is correct
9 Correct 5 ms 2680 KB Output is correct
10 Correct 5 ms 2680 KB Output is correct

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 2680 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2680 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 5 ms 2808 KB Output is correct
6 Correct 5 ms 2680 KB Output is correct
7 Correct 4 ms 2680 KB Output is correct
8 Correct 5 ms 2680 KB Output is correct
9 Correct 4 ms 2684 KB Output is correct
10 Correct 4 ms 2680 KB Output is correct
11 Correct 4 ms 2680 KB Output is correct
12 Correct 5 ms 2680 KB Output is correct
13 Correct 5 ms 2680 KB Output is correct
14 Correct 4 ms 2680 KB Output is correct
15 Correct 4 ms 2808 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2680 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 5 ms 2708 KB Output is correct
6 Correct 5 ms 2680 KB Output is correct
7 Correct 4 ms 2684 KB Output is correct
8 Correct 5 ms 2680 KB Output is correct
9 Correct 5 ms 2936 KB Output is correct
10 Correct 6 ms 2808 KB Output is correct
11 Incorrect 4 ms 2680 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2680 KB Output is correct
3 Correct 4 ms 2684 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 5 ms 2680 KB Output is correct
6 Correct 4 ms 2680 KB Output is correct
7 Correct 5 ms 2680 KB Output is correct
8 Correct 4 ms 2680 KB Output is correct
9 Correct 4 ms 2680 KB Output is correct
10 Correct 4 ms 2684 KB Output is correct
11 Incorrect 4 ms 2752 KB Output isn't correct
12 Halted 0 ms 0 KB -