oj.uz

Submission #201256

# Submission time Handle Problem Language Result Execution time Memory
201256 2020-02-10T04:10:10 Z jun6873 Fireworks (APIO16_fireworks) C++11
7 / 100
 10 ms 7420 KB 
#include <bits/stdc++.h>
using namespace std;

using lint = long long;
using pint = pair<int, int>;
#define x first
#define y second

const int maxn = 300004;

int N1, N2, N;
vector<pint> g[maxn];

struct func {
    priority_queue<int> neg;
    priority_queue<int, vector<int>, greater<int> > pos;
    lint mn = 0;
    void add(int x, int y, int z) {
        neg.push(x);
        pos.push(y);
        mn += z;

        while (neg.top() > pos.top()) {
            int x = neg.top(), y = pos.top();
            neg.pop(); pos.pop();
            pos.push(x); neg.push(y);
            mn += x - y;
        }
    }
};

func dfs(int x) {
    func f;
    for (pint i : g[x]) {
        int k = i.x, t = i.y;
        func g = dfs(k);

        if (k <= N1) f.add(g.neg.top() + t, g.pos.top() + t, g.mn);
        else f.add(t, t, 0);
    }
    return f;
}

main() {
    ios::sync_with_stdio(0); cin.tie(0);

    cin >> N1 >> N2;
    N = N1 + N2;

    for (int i=2; i<=N; i++) {
        int x, y;
        cin >> x >> y;
        g[x].emplace_back(i, y);
    }

    dfs(1);

    cout << dfs(1).mn << '\n';
}

Compilation message

fireworks.cpp:44:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7416 KB Output is correct
2 Correct 9 ms 7288 KB Output is correct
3 Correct 10 ms 7416 KB Output is correct
4 Correct 9 ms 7416 KB Output is correct
5 Correct 9 ms 7416 KB Output is correct
6 Correct 9 ms 7416 KB Output is correct
7 Correct 9 ms 7416 KB Output is correct
8 Correct 9 ms 7420 KB Output is correct
9 Correct 9 ms 7416 KB Output is correct
10 Correct 9 ms 7416 KB Output is correct

Subtask #2
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7416 KB Output is correct
2 Correct 9 ms 7416 KB Output is correct
3 Incorrect 9 ms 7416 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7416 KB Output is correct
2 Correct 9 ms 7288 KB Output is correct
3 Correct 10 ms 7416 KB Output is correct
4 Correct 9 ms 7416 KB Output is correct
5 Correct 9 ms 7416 KB Output is correct
6 Correct 9 ms 7416 KB Output is correct
7 Correct 9 ms 7416 KB Output is correct
8 Correct 9 ms 7420 KB Output is correct
9 Correct 9 ms 7416 KB Output is correct
10 Correct 9 ms 7416 KB Output is correct
11 Correct 9 ms 7416 KB Output is correct
12 Correct 9 ms 7416 KB Output is correct
13 Incorrect 9 ms 7416 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7416 KB Output is correct
2 Correct 9 ms 7288 KB Output is correct
3 Correct 10 ms 7416 KB Output is correct
4 Correct 9 ms 7416 KB Output is correct
5 Correct 9 ms 7416 KB Output is correct
6 Correct 9 ms 7416 KB Output is correct
7 Correct 9 ms 7416 KB Output is correct
8 Correct 9 ms 7420 KB Output is correct
9 Correct 9 ms 7416 KB Output is correct
10 Correct 9 ms 7416 KB Output is correct
11 Correct 9 ms 7416 KB Output is correct
12 Correct 9 ms 7416 KB Output is correct
13 Incorrect 9 ms 7416 KB Output isn't correct
14 Halted 0 ms 0 KB -