oj.uz

답안 #746969

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
746969 2023-05-23T09:54:36 Z Prieved1 Fireworks (APIO16_fireworks) C++17
7 / 100
 18 ms 30952 KB 
#include<iostream>
#include<vector>
#include<queue>
using namespace std;
#define int long long
int inf=2e18;
struct pq {
    priority_queue<int, vector<int>,
    greater<int>> q;
    int offside=0;
    void push(int val) {
        q.push(val-offside);
    }
    int top(){return q.top()+offside;}
    void pop(){q.pop();}
    void move(int k){offside+=k;}
    int size(){return q.size();}
};
struct node{
    priority_queue<int> lr;
    pq rr;
    int val=0;
    int sz(){return lr.size()+rr.size();}
    void add(int k) {
        if(!lr.size()) {
            lr.push(k);
            rr.push(k);
            lr.push(0);
            rr.push(inf);
        }else {
            int c=rr.top();
            rr.pop();
            rr.move(k);
            rr.push(c);
            rr.move(k);
            c=lr.top();
            lr.pop();
            lr.push(c+k);
        }
    }
};
void merge(node &a, node& b) {
    b.val+=a.val;
    while(a.lr.size()) {
        int i=a.lr.top();
        a.lr.pop();
        if(i<=b.rr.top()) {
            b.lr.push(i);
        }
        else {
            b.rr.push(i);
            //b.val+=i-b.lr.top();
            b.lr.push(b.rr.top());
            b.rr.pop();
            b.val+=i-b.lr.top();
        }
    }
    while(a.rr.size()) {
        int i=a.rr.top();
        a.rr.pop();
        if(i>=b.lr.top()) {
            b.rr.push(i);
        }
        else {
            b.lr.push(i);
            b.rr.push(b.lr.top());
            b.lr.pop();
            b.val+=b.rr.top()-i;
        }
    }
}
const int N=300010;
vector<pair<int,int>> g[N];
node res[N];
void dfs(int at) {
    // res[at].add(0);
    for(auto to:g[at]) {
        dfs(to.first);
        res[to.first].add(to.second);
        if(res[at].sz()<res[to.first].sz()) 
        {
        swap(res[at],res[to.first]);
        }
        merge(res[to.first], res[at]);
    }
}
int32_t main()
{
    int n, m;
    cin >> n >> m;
    for(int i =2;i<=n+m;i++) {
        int p, c;
        cin >> p >> c;
        g[p].push_back({i,c});
    }
    dfs(1);
    cout << res[1].val << endl;
    return 0;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 30804 KB Output is correct
2 Correct 16 ms 30744 KB Output is correct
3 Correct 18 ms 30828 KB Output is correct
4 Correct 16 ms 30828 KB Output is correct
5 Correct 16 ms 30804 KB Output is correct
6 Correct 15 ms 30824 KB Output is correct
7 Correct 15 ms 30820 KB Output is correct
8 Correct 15 ms 30804 KB Output is correct
9 Correct 15 ms 30792 KB Output is correct
10 Correct 15 ms 30952 KB Output is correct

Subtask #2
0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 30836 KB Output is correct
2 Correct 14 ms 30804 KB Output is correct
3 Correct 16 ms 30820 KB Output is correct
4 Correct 15 ms 30796 KB Output is correct
5 Correct 15 ms 30828 KB Output is correct
6 Incorrect 15 ms 30824 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #3
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 30804 KB Output is correct
2 Correct 16 ms 30744 KB Output is correct
3 Correct 18 ms 30828 KB Output is correct
4 Correct 16 ms 30828 KB Output is correct
5 Correct 16 ms 30804 KB Output is correct
6 Correct 15 ms 30824 KB Output is correct
7 Correct 15 ms 30820 KB Output is correct
8 Correct 15 ms 30804 KB Output is correct
9 Correct 15 ms 30792 KB Output is correct
10 Correct 15 ms 30952 KB Output is correct
11 Correct 15 ms 30836 KB Output is correct
12 Correct 14 ms 30804 KB Output is correct
13 Correct 16 ms 30820 KB Output is correct
14 Correct 15 ms 30796 KB Output is correct
15 Correct 15 ms 30828 KB Output is correct
16 Incorrect 15 ms 30824 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 30804 KB Output is correct
2 Correct 16 ms 30744 KB Output is correct
3 Correct 18 ms 30828 KB Output is correct
4 Correct 16 ms 30828 KB Output is correct
5 Correct 16 ms 30804 KB Output is correct
6 Correct 15 ms 30824 KB Output is correct
7 Correct 15 ms 30820 KB Output is correct
8 Correct 15 ms 30804 KB Output is correct
9 Correct 15 ms 30792 KB Output is correct
10 Correct 15 ms 30952 KB Output is correct
11 Correct 15 ms 30836 KB Output is correct
12 Correct 14 ms 30804 KB Output is correct
13 Correct 16 ms 30820 KB Output is correct
14 Correct 15 ms 30796 KB Output is correct
15 Correct 15 ms 30828 KB Output is correct
16 Incorrect 15 ms 30824 KB Output isn't correct
17 Halted 0 ms 0 KB -