oj.uz

답안 #242237

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
242237 2020-06-27T07:13:59 Z lyc Magic Tree (CEOI19_magictree) C++14
3 / 100
 143 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>;
using pll=pair<ll,ll>;

const int mxN = 1e5+5;
const int mxM = mxN;
const int mxK = 1e5+5;

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

set<ii> dfs(int u) {
    set<ii> cur;
    for (int v : al[u]) {
        auto x = dfs(v);
        if (SZ(cur) < SZ(x)) swap(cur,x);
        for (auto y : x) cur.insert(y);
    }
    if (fruit[u] != ii(-1,-1)) {
        ll sum = 0;
        for (auto it = cur.rbegin(); it != cur.rend() && it->first > fruit[u].first; ++it) {
            sum += it->second;
        }
        if (fruit[u].second >= sum) {
            for (auto it = cur.rbegin(); it != cur.rend() && it->first > fruit[u].first;) {
                auto jt = next(it);
                assert(cur.find(*it) != cur.end());
                cur.erase(cur.find(*it));
                it = jt;
            }
            cur.insert(fruit[u]);
        }
    }
    return cur;
}

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

Subtask #1
0 / 6.0

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

Subtask #2
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 59 ms 7032 KB Output is correct
2 Correct 51 ms 13944 KB Output is correct
3 Correct 143 ms 9184 KB Output is correct
4 Correct 79 ms 8432 KB Output is correct
5 Correct 103 ms 10260 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 133 ms 9208 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

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

Subtask #6
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 3328 KB Output is correct
2 Correct 35 ms 5632 KB Output is correct
3 Correct 34 ms 5628 KB Output is correct
4 Correct 31 ms 5624 KB Output is correct
5 Correct 14 ms 4220 KB Output is correct
6 Incorrect 31 ms 8576 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #7
0 / 22.0

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

Subtask #8
0 / 17.0

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