oj.uz

답안 #242612

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
242612 2020-06-28T10:36:01 Z lyc Magic Tree (CEOI19_magictree) C++14
3 / 100
 147 ms 13944 KB 
#include <bits/stdc++.h>
using namespace std;

#define TRACE(x) cerr << #x << " :: " << x << endl
#define _ << " " <<
#define SZ(x) (int)(x).size()
#define ALL(x) (x).begin(),(x).end()
#define FOR(i,a,b) for(int i=(a);i<=(b);++i)
#define RFOR(i,a,b) for (int i=(a);i>=(b);--i)
using ll=long long;
using ii=pair<int,int>;

const int mxN = 1e5+5;

int N, M, K;
vector<int> al[mxN];
ii fruit[mxN];

map<int,ll> dfs(int u) {
    map<int,ll> res;
    for (int v : al[u]) {
        auto x = dfs(v);
        if (SZ(res) < SZ(x)) swap(res,x);
        for (auto& y : x) {
            if (res.count(y.first)) res[y.first] += y.second;
            else res.insert(y);
        }
    }
    if (fruit[u] != ii(-1,-1)) {
        auto it = res.upper_bound(fruit[u].first);
        if (it != res.begin() && prev(it)->first == fruit[u].first) {
            auto x = *prev(it);
            res.erase(prev(it));
            x.second += fruit[u].second;
            it = res.insert(x).first;
        } else res.insert(fruit[u]);
        if (it != res.end()) {
            auto x = *it;
            res.erase(it);
            x.second -= fruit[u].second;
            res.insert(x);
        }
    }
    return res;
}

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

    cin >> N >> M >> K;
    FOR(i,2,N){
        int P; cin >> P;
        al[P].push_back(i);
    }
    FOR(i,1,N) fruit[i] = ii(-1,-1);
    FOR(i,1,M){
        int V, D, W; cin >> V >> D >> W;
        fruit[V] = ii(D,W);
    }

    auto res = dfs(1);
    ll ans = 0;
    for (auto& x : res) ans += x.second;
    cout << ans << '\n';
}

Subtask #1
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 2688 KB Output is correct
2 Incorrect 5 ms 2688 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 77 ms 6904 KB Output is correct
2 Correct 52 ms 13944 KB Output is correct
3 Correct 147 ms 8824 KB Output is correct
4 Correct 94 ms 7668 KB Output is correct
5 Correct 124 ms 9592 KB Output is correct

Subtask #3
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 6 ms 2944 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 82 ms 5112 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 2688 KB Output is correct
2 Incorrect 5 ms 2688 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 11 ms 3200 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 2688 KB Output is correct
2 Incorrect 5 ms 2688 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #8
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 2688 KB Output is correct
2 Incorrect 5 ms 2688 KB Output isn't correct
3 Halted 0 ms 0 KB -