oj.uz

답안 #954123

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
954123 2024-03-27T10:21:39 Z adaawf 바이오칩 (IZhO12_biochips) C++17
100 / 100
 513 ms 403664 KB 
#include <iostream>
#include <vector>
using namespace std;
vector<int> g[200005];
int f[200005][505], a[200005], k;
void dfs(int x) {
    for (int w : g[x]) {
        dfs(w);
        for (int i = k; i >= 0; i--) {
            for (int j = 0; j <= k - i; j++) {
                if (j != 0 && f[w][j] == 0) break;
                f[x][i + j] = max(f[x][i + j], f[x][i] + f[w][j]);
            }
        }
    }
    f[x][1] = max(f[x][1], a[x]);
}
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int n, r = 0;
    cin >> n >> k;
    for (int i = 1; i <= n; i++) {
        int x, y;
        cin >> x >> y;
        a[i] = y;
        if (x == 0) {
            r = i;
        }
        else {
            g[x].push_back(i);
        }
    }
    dfs(r);
    cout << f[r][k];
}

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 7000 KB Output is correct
2 Correct 2 ms 7016 KB Output is correct
3 Correct 2 ms 7260 KB Output is correct
4 Correct 19 ms 24716 KB Output is correct
5 Correct 22 ms 26964 KB Output is correct
6 Correct 30 ms 26956 KB Output is correct
7 Correct 321 ms 301524 KB Output is correct
8 Correct 315 ms 301820 KB Output is correct
9 Correct 456 ms 366280 KB Output is correct
10 Correct 513 ms 403664 KB Output is correct