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Submission #899428

# Submission time Handle Problem Language Result Execution time Memory
899428 2024-01-06T07:19:05 Z 12345678 Magic Tree (CEOI19_magictree) C++17
19 / 100
 2000 ms 28188 KB 
#include <bits/stdc++.h>

using namespace std;

#define ll long long

const int nx=1e5+5;
ll n, m, k, t[nx], w[nx], tmp[nx], x, p, sm, ans;
vector<int> d[nx];

struct value
{
    ll time;
    mutable ll val, idx;
    bool operator< (const value &o) const 
    {
        return time<o.time;
    } 
};
multiset<value> ms[nx];

void dfs(int u)
{
    for (auto v:d[u]) dfs(v);
    for (auto v:d[u]) for (auto tmp:ms[v]) ms[u].insert(tmp);
    for (auto v:d[u]) ms[v].clear();
    sm=0;
    for (auto itr=ms[u].begin(); itr!=ms[u].end(); itr++)
    {
        sm+=itr->val-tmp[itr->idx];
        tmp[itr->idx]=itr->val;
        itr->val=sm;
        itr->idx=u;
        //cout<<"here"<<' '<<vl.time<<' '<<vl.val<<' '<<vl.idx<<'\n';
    }
    if (!t[u]) {
        for (auto vl:ms[u]) ans=max(ans, vl.val);
        //cout<<"current: "<<u<<'\n';
        //for (auto vl:ms[u]) cout<<vl.time<<' '<<vl.val<<' '<<vl.idx<<'\n';
        return;
    }
    //cout<<"current1: "<<u<<'\n';
    //for (auto vl:ms[u]) cout<<vl.time<<' '<<vl.val<<' '<<vl.idx<<'\n';
    value nw;
    nw.time=t[u]; nw.val=LLONG_MAX; nw.idx=LLONG_MAX;
    auto itr=ms[u].upper_bound(nw);
    if (itr==ms[u].begin()) nw.val=w[u], nw.idx=u;
    else nw.val=w[u]+prev(itr)->val, nw.idx=u;
    itr=ms[u].insert(nw);
    while (next(itr)!=ms[u].end()&&next(itr)->val<=itr->val) ms[u].erase(next(itr));
    for (auto vl:ms[u]) ans=max(ans, vl.val);
    //cout<<"current2: "<<u<<'\n';
    //for (auto vl:ms[u]) cout<<vl.time<<' '<<vl.val<<' '<<vl.idx<<'\n';
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>m>>k;
    for (int i=2; i<=n; i++) cin>>p, d[p].push_back(i);
    for (int i=1; i<=m; i++) cin>>x>>t[x]>>w[x];
    dfs(1);
    cout<<ans<<'\n';
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8796 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 2 ms 8796 KB Output is correct
4 Correct 2 ms 8848 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 2 ms 8796 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 2 ms 8792 KB Output is correct

Subtask #2
0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 14356 KB Output is correct
2 Execution timed out 2039 ms 17852 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8792 KB Output is correct
2 Correct 3 ms 9048 KB Output is correct
3 Correct 16 ms 9032 KB Output is correct
4 Correct 62 ms 27472 KB Output is correct
5 Execution timed out 2043 ms 28188 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 160 ms 21328 KB Output is correct
2 Correct 153 ms 24656 KB Output is correct
3 Execution timed out 2025 ms 20400 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8796 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 2 ms 8796 KB Output is correct
4 Correct 2 ms 8848 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 2 ms 8796 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 2 ms 8792 KB Output is correct
10 Correct 139 ms 20560 KB Output is correct
11 Correct 123 ms 20820 KB Output is correct
12 Execution timed out 2021 ms 19412 KB Time limit exceeded
13 Halted 0 ms 0 KB -

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9304 KB Output is correct
2 Correct 21 ms 12056 KB Output is correct
3 Correct 23 ms 11864 KB Output is correct
4 Correct 19 ms 12024 KB Output is correct
5 Correct 7 ms 10460 KB Output is correct
6 Correct 229 ms 14296 KB Output is correct
7 Correct 220 ms 18000 KB Output is correct

Subtask #7
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8796 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 2 ms 8796 KB Output is correct
4 Correct 2 ms 8848 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 2 ms 8796 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 2 ms 8792 KB Output is correct
10 Correct 2 ms 8792 KB Output is correct
11 Correct 3 ms 9048 KB Output is correct
12 Correct 16 ms 9032 KB Output is correct
13 Correct 62 ms 27472 KB Output is correct
14 Execution timed out 2043 ms 28188 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #8
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8796 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 2 ms 8796 KB Output is correct
4 Correct 2 ms 8848 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 2 ms 8796 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 2 ms 8792 KB Output is correct
10 Correct 59 ms 14356 KB Output is correct
11 Execution timed out 2039 ms 17852 KB Time limit exceeded
12 Halted 0 ms 0 KB -