oj.uz

답안 #957110

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
957110 2024-04-03T03:30:07 Z thinknoexit Fireworks (APIO16_fireworks) C++17
7 / 100
 9 ms 33624 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 300300;
bool leaf[N];
vector<pair<int, int>> adj[N];
ll ansl[N], ansr[N], ans[N];
priority_queue<ll> l[N];
priority_queue<ll, vector<ll>, greater<ll>> r[N];
void dfs(int v, ll d) {
    if (leaf[v]) {
        ansl[v] = d;
        ansr[v] = d;
        return;
    }
    for (auto& [x, w] : adj[v]) {
        dfs(x, d + w);
        if (l[v].empty()) {
            ans[v] = ans[x];
            l[v].push(ansl[x]);
            r[v].push(ansr[x]);
            continue;
        }
        ll nowl = l[v].top(), nowr = r[v].top();
        ans[v] += ans[x];
        if (ansr[x] < nowl) {
            ans[v] += nowl - ansr[x];
            l[v].push(ansl[x]);
            l[v].push(ansr[x]);
            l[v].pop();
            r[v].push(nowl);
        }
        else if (ansl[x] > nowr) {
            ans[v] += ansl[x] - nowr;
            r[v].push(ansl[x]);
            r[v].push(ansr[x]);
            r[v].pop();
            l[v].push(nowr);
        }
        else {
            l[v].push(ansl[x]);
            r[v].push(ansr[x]);
        }
    }
    ansl[v] = l[v].top();
    ansr[v] = r[v].top();
}
int main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    int n, m;
    cin >> n >> m;
    for (int i = 2;i <= n + m;i++) {
        int p, c;
        cin >> p >> c;
        adj[p].push_back({ i, c });
        if (i > n) leaf[i] = 1;
    }
    dfs(1, 0);
    cout << ans[1];
    return 0;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 33372 KB Output is correct
2 Correct 7 ms 33372 KB Output is correct
3 Correct 8 ms 33372 KB Output is correct
4 Correct 7 ms 33540 KB Output is correct
5 Correct 7 ms 33372 KB Output is correct
6 Correct 9 ms 33624 KB Output is correct
7 Correct 7 ms 33372 KB Output is correct
8 Correct 7 ms 33372 KB Output is correct
9 Correct 7 ms 33412 KB Output is correct
10 Correct 7 ms 33372 KB Output is correct

Subtask #2
0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 33372 KB Output is correct
2 Correct 7 ms 33420 KB Output is correct
3 Incorrect 6 ms 33372 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 33372 KB Output is correct
2 Correct 7 ms 33372 KB Output is correct
3 Correct 8 ms 33372 KB Output is correct
4 Correct 7 ms 33540 KB Output is correct
5 Correct 7 ms 33372 KB Output is correct
6 Correct 9 ms 33624 KB Output is correct
7 Correct 7 ms 33372 KB Output is correct
8 Correct 7 ms 33372 KB Output is correct
9 Correct 7 ms 33412 KB Output is correct
10 Correct 7 ms 33372 KB Output is correct
11 Correct 7 ms 33372 KB Output is correct
12 Correct 7 ms 33420 KB Output is correct
13 Incorrect 6 ms 33372 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 33372 KB Output is correct
2 Correct 7 ms 33372 KB Output is correct
3 Correct 8 ms 33372 KB Output is correct
4 Correct 7 ms 33540 KB Output is correct
5 Correct 7 ms 33372 KB Output is correct
6 Correct 9 ms 33624 KB Output is correct
7 Correct 7 ms 33372 KB Output is correct
8 Correct 7 ms 33372 KB Output is correct
9 Correct 7 ms 33412 KB Output is correct
10 Correct 7 ms 33372 KB Output is correct
11 Correct 7 ms 33372 KB Output is correct
12 Correct 7 ms 33420 KB Output is correct
13 Incorrect 6 ms 33372 KB Output isn't correct
14 Halted 0 ms 0 KB -