oj.uz

답안 #775381

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
775381 2023-07-06T10:39:05 Z boris_mihov 친구 (IOI14_friend) C++17
19 / 100
 2 ms 2772 KB 
#include "friend.h"
#include <algorithm>
#include <iostream>
#include <numeric>
#include <cassert>
#include <vector>

typedef long long llong;
const int MAXN = 100000 + 10;
const int INF  = 1e9;

int n;
int c[MAXN];
int dp[MAXN][2];
bool bl[MAXN][2];
std::vector <int> g[MAXN];

int f(int node, bool can)
{
    if (bl[node][can])
    {
        return dp[node][can];
    }

    bl[node][can] = true;
    int sumTake = c[node];
    int sumNotTake = 0;

    for (const int &u : g[node])
    {
        sumTake += f(u, 0);
        sumNotTake += f(u, 1);
    }

    dp[node][can] = sumNotTake;
    if (can) dp[node][can] = std::max(dp[node][can], sumTake);
    return dp[node][can];
}

int findSample(int N, int confidence[], int host[], int protocol[])
{
    n = N;
    for (int i = 0 ; i < n ; ++i)
    {
        c[i] = confidence[i];
    }

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

    return f(0, 1);
}

Subtask #1
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Incorrect 1 ms 2644 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 2644 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 2644 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 1 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 1 ms 2644 KB Output is correct
12 Correct 2 ms 2664 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 1 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct

Subtask #5
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 2644 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Incorrect 1 ms 2676 KB Output isn't correct
4 Halted 0 ms 0 KB -