oj.uz

답안 #1091875

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1091875 2024-09-22T12:19:28 Z ASN49K Fireworks (APIO16_fireworks) C++14
7 / 100
 5 ms 7516 KB 
#include <bits/stdc++.h>
using namespace std;
using i64=long long;
#define UNUSED -1
#define all(x) x.begin(),x.end()
#define pb push_back
const int mod=1e9+7,inf=1e9+1;
const int N=3e5;
vector<pair<int,int>>g[N];
i64 best[N][2];
i64 rez[N];
void dfs(int nod)
{
    if(g[nod].size()==0)
    {
        return;
    }

    multiset<i64>mp;
    for(auto &c:g[nod])
    {
        dfs(c.first);
        best[c.first][0]+=c.second;
        best[c.first][1]+=c.second;
        mp.insert(best[c.first][0]);
        mp.insert(best[c.first][1]);
    }
    while(mp.size()>2)
    {
        mp.erase(mp.find(*mp.begin()));
        mp.erase(mp.find(*mp.rbegin()));
    }

    best[nod][0]=*mp.begin();
    best[nod][1]=*mp.rbegin();

    i64 x=best[nod][0];
    for(auto &c:g[nod])
    {
        rez[nod]+=rez[c.first];
        rez[nod]+=max(x-best[c.first][1] , 0LL);
        rez[nod]+=max(best[c.first][0]-x , 0LL);
    }

}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n,m;
    cin>>n>>m;
    n+=m;
    for(int i=1;i<n;i++)
    {
        int x,y;
        cin>>x>>y;
        x--;
        g[x].pb({i,y});
    }
    dfs(0);
    cout<<rez[0];
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 7260 KB Output is correct
2 Correct 3 ms 7516 KB Output is correct
3 Correct 3 ms 7376 KB Output is correct
4 Correct 3 ms 7304 KB Output is correct
5 Correct 3 ms 7516 KB Output is correct
6 Correct 5 ms 7508 KB Output is correct
7 Correct 3 ms 7516 KB Output is correct
8 Correct 3 ms 7516 KB Output is correct
9 Correct 3 ms 7516 KB Output is correct
10 Correct 3 ms 7508 KB Output is correct

Subtask #2
0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 7516 KB Output is correct
2 Correct 3 ms 7260 KB Output is correct
3 Incorrect 4 ms 7260 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 7260 KB Output is correct
2 Correct 3 ms 7516 KB Output is correct
3 Correct 3 ms 7376 KB Output is correct
4 Correct 3 ms 7304 KB Output is correct
5 Correct 3 ms 7516 KB Output is correct
6 Correct 5 ms 7508 KB Output is correct
7 Correct 3 ms 7516 KB Output is correct
8 Correct 3 ms 7516 KB Output is correct
9 Correct 3 ms 7516 KB Output is correct
10 Correct 3 ms 7508 KB Output is correct
11 Correct 5 ms 7516 KB Output is correct
12 Correct 3 ms 7260 KB Output is correct
13 Incorrect 4 ms 7260 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 7260 KB Output is correct
2 Correct 3 ms 7516 KB Output is correct
3 Correct 3 ms 7376 KB Output is correct
4 Correct 3 ms 7304 KB Output is correct
5 Correct 3 ms 7516 KB Output is correct
6 Correct 5 ms 7508 KB Output is correct
7 Correct 3 ms 7516 KB Output is correct
8 Correct 3 ms 7516 KB Output is correct
9 Correct 3 ms 7516 KB Output is correct
10 Correct 3 ms 7508 KB Output is correct
11 Correct 5 ms 7516 KB Output is correct
12 Correct 3 ms 7260 KB Output is correct
13 Incorrect 4 ms 7260 KB Output isn't correct
14 Halted 0 ms 0 KB -