답안 #703491

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
703491	2023-02-27T13:49:06 Z	Cyanmond	Magic Tree (CEOI19_magictree)	C++17	100 / 100	188 ms	33964 KB

magictree

#include <bits/stdc++.h>

using i64 = long long;
struct Vertice {
    bool exFruit;
    int day;
    i64 weight;
};

int main() {
    int N, M, K;
    std::cin >> N >> M >> K;
    std::vector<int> P(N);
    std::vector<std::vector<int>> tree(N);
    for (int i = 1; i < N; ++i) {
        std::cin >> P[i];
        --P[i];
        tree[P[i]].push_back(i);
    }
    std::vector<int> U(M), D(M);
    std::vector<i64> W(M);
    std::vector<Vertice> vData(N);
    for (int i = 0; i < M; ++i) {
        std::cin >> U[i] >> D[i] >> W[i];
        --U[i];
    }
    {
        // press
        auto cD = D;
        std::sort(cD.begin(), cD.end());
        cD.erase(std::unique(cD.begin(), cD.end()), cD.end());
        for (auto &e : D) {
            e = (int)(std::lower_bound(cD.begin(), cD.end(), e) - cD.begin());
        }
        K = (int)cD.size();
    }
    for (int i = 0; i < M; ++i) {
        vData[U[i]] = {true, D[i], W[i]};
    }

    auto merge = [&] (std::map<int, i64> &a, std::map<int, i64> &b) {
        if (a.size() < b.size()) {
            std::swap(a, b);
        }
        for (const auto &[k, v] : b) {
            a[k] += v;
        }
    };

    auto dfs = [&](auto &&self, const int v) -> std::map<int, i64> {
        // calc DP
        std::map<int, i64> ret;
        for (const int t : tree[v]) {
            auto res = self(self, t);
            merge(ret, res);
        }
        // cut
        if (vData[v].exFruit) {
            ret[vData[v].day] += vData[v].weight;
            auto itr = ret.upper_bound(vData[v].day);
            i64 sum = vData[v].weight;
            while (itr != ret.end() and sum != 0) {
                if (itr->second <= sum) {
                    sum -= itr->second;
                    itr = ret.erase(itr);
                } else {
                    itr->second -= sum;
                    sum = 0;
                }
            }
        }
        return ret;
    };
    const auto res = dfs(dfs, 0);
    i64 answer = 0;
    for (const auto &[k, v] : res) {
        answer += v;
    }
    std::cout << answer << std::endl;
}

Subtask #1
6.0 / 6.0

#	결과	메모리	Grader output
1	Correct	212 KB	Output is correct
2	Correct	212 KB	Output is correct
3	Correct	212 KB	Output is correct
4	Correct	212 KB	Output is correct
5	Correct	212 KB	Output is correct
6	Correct	212 KB	Output is correct
7	Correct	212 KB	Output is correct
8	Correct	212 KB	Output is correct
9	Correct	212 KB	Output is correct

Subtask #2
3.0 / 3.0

#	결과	실행 시간	메모리	Grader output
1	Correct	93 ms	8336 KB	Output is correct
2	Correct	84 ms	16596 KB	Output is correct
3	Correct	183 ms	11396 KB	Output is correct
4	Correct	135 ms	10020 KB	Output is correct
5	Correct	164 ms	12368 KB	Output is correct

Subtask #3
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	468 KB	Output is correct
2	Correct	1 ms	468 KB	Output is correct
3	Correct	1 ms	468 KB	Output is correct
4	Correct	122 ms	27980 KB	Output is correct
5	Correct	135 ms	33964 KB	Output is correct
6	Correct	139 ms	29944 KB	Output is correct

Subtask #4
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	147 ms	7920 KB	Output is correct
2	Correct	114 ms	7856 KB	Output is correct
3	Correct	110 ms	15968 KB	Output is correct
4	Correct	92 ms	6792 KB	Output is correct
5	Correct	133 ms	27860 KB	Output is correct

Subtask #5
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	107 ms	7872 KB	Output is correct
11	Correct	101 ms	7884 KB	Output is correct
12	Correct	101 ms	16000 KB	Output is correct
13	Correct	75 ms	6876 KB	Output is correct
14	Correct	119 ms	27856 KB	Output is correct

Subtask #6
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	9 ms	1512 KB	Output is correct
2	Correct	41 ms	6180 KB	Output is correct
3	Correct	42 ms	6168 KB	Output is correct
4	Correct	40 ms	6276 KB	Output is correct
5	Correct	17 ms	5068 KB	Output is correct
6	Correct	43 ms	9692 KB	Output is correct
7	Correct	43 ms	14668 KB	Output is correct

Subtask #7
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	1 ms	468 KB	Output is correct
11	Correct	1 ms	468 KB	Output is correct
12	Correct	1 ms	468 KB	Output is correct
13	Correct	122 ms	27980 KB	Output is correct
14	Correct	135 ms	33964 KB	Output is correct
15	Correct	139 ms	29944 KB	Output is correct
16	Correct	107 ms	7872 KB	Output is correct
17	Correct	101 ms	7884 KB	Output is correct
18	Correct	101 ms	16000 KB	Output is correct
19	Correct	75 ms	6876 KB	Output is correct
20	Correct	119 ms	27856 KB	Output is correct
21	Correct	26 ms	2348 KB	Output is correct
22	Correct	99 ms	8552 KB	Output is correct
23	Correct	103 ms	10388 KB	Output is correct
24	Correct	187 ms	12692 KB	Output is correct
25	Correct	117 ms	11448 KB	Output is correct
26	Correct	157 ms	16800 KB	Output is correct
27	Correct	144 ms	19276 KB	Output is correct

Subtask #8
17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	93 ms	8336 KB	Output is correct
11	Correct	84 ms	16596 KB	Output is correct
12	Correct	183 ms	11396 KB	Output is correct
13	Correct	135 ms	10020 KB	Output is correct
14	Correct	164 ms	12368 KB	Output is correct
15	Correct	1 ms	468 KB	Output is correct
16	Correct	1 ms	468 KB	Output is correct
17	Correct	1 ms	468 KB	Output is correct
18	Correct	122 ms	27980 KB	Output is correct
19	Correct	135 ms	33964 KB	Output is correct
20	Correct	139 ms	29944 KB	Output is correct
21	Correct	147 ms	7920 KB	Output is correct
22	Correct	114 ms	7856 KB	Output is correct
23	Correct	110 ms	15968 KB	Output is correct
24	Correct	92 ms	6792 KB	Output is correct
25	Correct	133 ms	27860 KB	Output is correct
26	Correct	107 ms	7872 KB	Output is correct
27	Correct	101 ms	7884 KB	Output is correct
28	Correct	101 ms	16000 KB	Output is correct
29	Correct	75 ms	6876 KB	Output is correct
30	Correct	119 ms	27856 KB	Output is correct
31	Correct	9 ms	1512 KB	Output is correct
32	Correct	41 ms	6180 KB	Output is correct
33	Correct	42 ms	6168 KB	Output is correct
34	Correct	40 ms	6276 KB	Output is correct
35	Correct	17 ms	5068 KB	Output is correct
36	Correct	43 ms	9692 KB	Output is correct
37	Correct	43 ms	14668 KB	Output is correct
38	Correct	26 ms	2348 KB	Output is correct
39	Correct	99 ms	8552 KB	Output is correct
40	Correct	103 ms	10388 KB	Output is correct
41	Correct	187 ms	12692 KB	Output is correct
42	Correct	117 ms	11448 KB	Output is correct
43	Correct	157 ms	16800 KB	Output is correct
44	Correct	144 ms	19276 KB	Output is correct
45	Correct	32 ms	2380 KB	Output is correct
46	Correct	108 ms	8828 KB	Output is correct
47	Correct	115 ms	10588 KB	Output is correct
48	Correct	188 ms	13772 KB	Output is correct
49	Correct	147 ms	12176 KB	Output is correct
50	Correct	185 ms	17728 KB	Output is correct
51	Correct	161 ms	20208 KB	Output is correct

답안 #703491

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