답안 #873048

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
873048	2023-11-14T11:06:22 Z	NeroZein	Magic Tree (CEOI19_magictree)	C++17	100 / 100	109 ms	34576 KB

magictree

#include "bits/stdc++.h"
using namespace std;

#ifdef Nero
#include "Deb.h"
#else
#define deb(...)
#endif

const int N = 1e5 + 5;

vector<int> g[N]; 
pair<int, int> a[N]; 
map<int, long long> dp[N]; 

void merge(map<int, long long>& du, map<int, long long>& dv) {
  if (du.size() > dv.size()) {
    swap(du, dv);
  }
  for (auto it : du) {
    dv[it.first] += it.second; 
  }
}

void dfs(int v) {
  for (int u : g[v]) {
    dfs(u); 
    merge(dp[u], dp[v]); 
  }
  if (!a[v].first) return;
  long long tmp = a[v].second; 
  dp[v][a[v].first] += a[v].second; 
  auto it = dp[v].upper_bound(a[v].first);
  while (tmp && it != dp[v].end()) {
    if (tmp >= it->second) {
      tmp -= it->second;
      it = dp[v].erase(it); 
    } else {
      it->second -= tmp; 
      tmp = 0;
    }
  } 
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int n, m, k;
  cin >> n >> m >> k; 
  for (int i = 2; i <= n; ++i) {
    int p;
    cin >> p;
    g[p].push_back(i); 
  }
  for (int i = 0; i < m; ++i) {
    int v, t, w;
    cin >> v >> t >> w;
    a[v] = {t, w}; 
  }
  dfs(1);
  long long ans = 0; 
  for (auto it : dp[1]) {
    ans += it.second;
  }
  cout << ans << '\n'; 
  return 0;
}

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	8284 KB	Output is correct
2	Correct	2 ms	8028 KB	Output is correct
3	Correct	2 ms	8028 KB	Output is correct
4	Correct	2 ms	8028 KB	Output is correct
5	Correct	2 ms	8028 KB	Output is correct
6	Correct	2 ms	8248 KB	Output is correct
7	Correct	2 ms	8028 KB	Output is correct
8	Correct	2 ms	8028 KB	Output is correct
9	Correct	2 ms	8072 KB	Output is correct

Subtask #2
3.0 / 3.0

#	결과	실행 시간	메모리	Grader output
1	Correct	48 ms	17236 KB	Output is correct
2	Correct	29 ms	16972 KB	Output is correct
3	Correct	100 ms	34576 KB	Output is correct
4	Correct	61 ms	17864 KB	Output is correct
5	Correct	76 ms	19152 KB	Output is correct

Subtask #3
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	8284 KB	Output is correct
2	Correct	2 ms	8284 KB	Output is correct
3	Correct	2 ms	8284 KB	Output is correct
4	Correct	36 ms	19080 KB	Output is correct
5	Correct	54 ms	23124 KB	Output is correct
6	Correct	48 ms	19248 KB	Output is correct

Subtask #4
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	45 ms	13344 KB	Output is correct
2	Correct	41 ms	14676 KB	Output is correct
3	Correct	35 ms	16980 KB	Output is correct
4	Correct	28 ms	15840 KB	Output is correct
5	Correct	33 ms	21336 KB	Output is correct

Subtask #5
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	8284 KB	Output is correct
2	Correct	2 ms	8028 KB	Output is correct
3	Correct	2 ms	8028 KB	Output is correct
4	Correct	2 ms	8028 KB	Output is correct
5	Correct	2 ms	8028 KB	Output is correct
6	Correct	2 ms	8248 KB	Output is correct
7	Correct	2 ms	8028 KB	Output is correct
8	Correct	2 ms	8028 KB	Output is correct
9	Correct	2 ms	8072 KB	Output is correct
10	Correct	47 ms	16212 KB	Output is correct
11	Correct	40 ms	15452 KB	Output is correct
12	Correct	33 ms	14920 KB	Output is correct
13	Correct	30 ms	14300 KB	Output is correct
14	Correct	32 ms	19036 KB	Output is correct

Subtask #6
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	8792 KB	Output is correct
2	Correct	20 ms	10628 KB	Output is correct
3	Correct	18 ms	10580 KB	Output is correct
4	Correct	17 ms	10912 KB	Output is correct
5	Correct	7 ms	8924 KB	Output is correct
6	Correct	18 ms	11868 KB	Output is correct
7	Correct	22 ms	14428 KB	Output is correct

Subtask #7
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	8284 KB	Output is correct
2	Correct	2 ms	8028 KB	Output is correct
3	Correct	2 ms	8028 KB	Output is correct
4	Correct	2 ms	8028 KB	Output is correct
5	Correct	2 ms	8028 KB	Output is correct
6	Correct	2 ms	8248 KB	Output is correct
7	Correct	2 ms	8028 KB	Output is correct
8	Correct	2 ms	8028 KB	Output is correct
9	Correct	2 ms	8072 KB	Output is correct
10	Correct	2 ms	8284 KB	Output is correct
11	Correct	2 ms	8284 KB	Output is correct
12	Correct	2 ms	8284 KB	Output is correct
13	Correct	36 ms	19080 KB	Output is correct
14	Correct	54 ms	23124 KB	Output is correct
15	Correct	48 ms	19248 KB	Output is correct
16	Correct	47 ms	16212 KB	Output is correct
17	Correct	40 ms	15452 KB	Output is correct
18	Correct	33 ms	14920 KB	Output is correct
19	Correct	30 ms	14300 KB	Output is correct
20	Correct	32 ms	19036 KB	Output is correct
21	Correct	16 ms	11352 KB	Output is correct
22	Correct	58 ms	17796 KB	Output is correct
23	Correct	74 ms	20756 KB	Output is correct
24	Correct	93 ms	28500 KB	Output is correct
25	Correct	62 ms	17876 KB	Output is correct
26	Correct	65 ms	18516 KB	Output is correct
27	Correct	51 ms	16468 KB	Output is correct

Subtask #8
17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	8284 KB	Output is correct
2	Correct	2 ms	8028 KB	Output is correct
3	Correct	2 ms	8028 KB	Output is correct
4	Correct	2 ms	8028 KB	Output is correct
5	Correct	2 ms	8028 KB	Output is correct
6	Correct	2 ms	8248 KB	Output is correct
7	Correct	2 ms	8028 KB	Output is correct
8	Correct	2 ms	8028 KB	Output is correct
9	Correct	2 ms	8072 KB	Output is correct
10	Correct	48 ms	17236 KB	Output is correct
11	Correct	29 ms	16972 KB	Output is correct
12	Correct	100 ms	34576 KB	Output is correct
13	Correct	61 ms	17864 KB	Output is correct
14	Correct	76 ms	19152 KB	Output is correct
15	Correct	2 ms	8284 KB	Output is correct
16	Correct	2 ms	8284 KB	Output is correct
17	Correct	2 ms	8284 KB	Output is correct
18	Correct	36 ms	19080 KB	Output is correct
19	Correct	54 ms	23124 KB	Output is correct
20	Correct	48 ms	19248 KB	Output is correct
21	Correct	45 ms	13344 KB	Output is correct
22	Correct	41 ms	14676 KB	Output is correct
23	Correct	35 ms	16980 KB	Output is correct
24	Correct	28 ms	15840 KB	Output is correct
25	Correct	33 ms	21336 KB	Output is correct
26	Correct	47 ms	16212 KB	Output is correct
27	Correct	40 ms	15452 KB	Output is correct
28	Correct	33 ms	14920 KB	Output is correct
29	Correct	30 ms	14300 KB	Output is correct
30	Correct	32 ms	19036 KB	Output is correct
31	Correct	5 ms	8792 KB	Output is correct
32	Correct	20 ms	10628 KB	Output is correct
33	Correct	18 ms	10580 KB	Output is correct
34	Correct	17 ms	10912 KB	Output is correct
35	Correct	7 ms	8924 KB	Output is correct
36	Correct	18 ms	11868 KB	Output is correct
37	Correct	22 ms	14428 KB	Output is correct
38	Correct	16 ms	11352 KB	Output is correct
39	Correct	58 ms	17796 KB	Output is correct
40	Correct	74 ms	20756 KB	Output is correct
41	Correct	93 ms	28500 KB	Output is correct
42	Correct	62 ms	17876 KB	Output is correct
43	Correct	65 ms	18516 KB	Output is correct
44	Correct	51 ms	16468 KB	Output is correct
45	Correct	16 ms	11872 KB	Output is correct
46	Correct	52 ms	19828 KB	Output is correct
47	Correct	59 ms	23308 KB	Output is correct
48	Correct	109 ms	33364 KB	Output is correct
49	Correct	52 ms	19920 KB	Output is correct
50	Correct	68 ms	21052 KB	Output is correct
51	Correct	71 ms	19152 KB	Output is correct

답안 #873048

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