답안 #1083443

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1083443	2024-09-03T07:23:20 Z	LucasLe	Magic Tree (CEOI19_magictree)	C++17	100 / 100	93 ms	35156 KB

magictree

#include <bits/stdc++.h>


#define                int  long long
#define                pii  pair<int, int>
#define                 fi  first
#define                 se  second
#define                 ld  long double
#define                 vi  vector<int>
#define                vii  vector<vector<int>>
#define             all(v)  (v).begin(), (v).end()
#define       rep(i, a, b)  for (int i = (a), _b = (b); i <= _b; ++i)
#define       per(i, b, a)  for (int i = (b), _a = (a); i >= _a; --i)

using namespace std;

const int MOD = 1e9 + 7;

int add(int a, int b) {
  a += b;
  if (a >= MOD) a -= MOD;
  return a;
}

int mul(int a, int b) {
  (a *= b) %= MOD;
  return a;
}

int bin_pow(int x, int y) {
  int res=1;
  while(y){if(y&1)res=res*x%MOD;x=x*x%MOD;y>>=1;}
  return res;
}

const int INF = 1e17;
const int maxn = 1e5 + 5;

int N, M, K;
int day[maxn + 5], weight[maxn + 5];
map<int, int> f[maxn + 5];
vector<int> g[maxn + 5];

void dfs(int u) {
  for (int v : g[u]) {
    dfs(v);
    if (f[v].size() > f[u].size()) swap(f[v], f[u]);
    for (auto it : f[v]) f[u][it.first] += it.second;
    f[v].clear();
  }
  if (day[u] && weight[u]) {
    int s = 0;
    while (true) {
      auto it = f[u].upper_bound(day[u]);
      if (it == f[u].end()) break;
      if (it->second + s <= weight[u]) {
        s += it->second;
        f[u].erase(it);
      } else {
        it->second += s - weight[u];
        break;
      }
    }
    f[u][day[u]] += weight[u];
  }
}

void solve(int tc) {
  // trong 1 subtree, neu chon dinh thi nhung dinh a[v] > a[u] ko chon
  // con ko chon dinh u thi chon cac dinh a[v] > a[u]
  
  cin >> N >> M >> K;
  rep(i, 2, N) {
    int p; cin >> p;
    g[p].push_back(i);
  }
  rep(i, 1, M) {
    int v, d, w; cin >> v >> d >> w;
    day[v] = d;
    weight[v] = w;
  }
  dfs(1);
  int ans = 0;
  for (auto it : f[1]) {
    ans += it.second;
  }
  cout << ans << '\n';
}

signed main() {

  ios_base::sync_with_stdio(false);
  cin.tie(0); cout.tie(0);

  int tc = 1;
  // cin >> tc;
  for (int i = 1; i <= tc; ++i) {
    solve(i);
  }
}

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7512 KB	Output is correct
2	Correct	3 ms	7516 KB	Output is correct
3	Correct	3 ms	7464 KB	Output is correct
4	Correct	3 ms	7512 KB	Output is correct
5	Correct	3 ms	7516 KB	Output is correct
6	Correct	3 ms	7492 KB	Output is correct
7	Correct	3 ms	7516 KB	Output is correct
8	Correct	3 ms	7260 KB	Output is correct
9	Correct	3 ms	7516 KB	Output is correct

Subtask #2
3.0 / 3.0

#	결과	실행 시간	메모리	Grader output
1	Correct	38 ms	13652 KB	Output is correct
2	Correct	29 ms	19844 KB	Output is correct
3	Correct	93 ms	17236 KB	Output is correct
4	Correct	50 ms	15564 KB	Output is correct
5	Correct	78 ms	18004 KB	Output is correct

Subtask #3
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	7516 KB	Output is correct
2	Correct	4 ms	7516 KB	Output is correct
3	Correct	3 ms	7512 KB	Output is correct
4	Correct	40 ms	31180 KB	Output is correct
5	Correct	59 ms	35156 KB	Output is correct
6	Correct	49 ms	31352 KB	Output is correct

Subtask #4
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	36 ms	12808 KB	Output is correct
2	Correct	42 ms	12948 KB	Output is correct
3	Correct	34 ms	20564 KB	Output is correct
4	Correct	25 ms	11728 KB	Output is correct
5	Correct	39 ms	31312 KB	Output is correct

Subtask #5
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7512 KB	Output is correct
2	Correct	3 ms	7516 KB	Output is correct
3	Correct	3 ms	7464 KB	Output is correct
4	Correct	3 ms	7512 KB	Output is correct
5	Correct	3 ms	7516 KB	Output is correct
6	Correct	3 ms	7492 KB	Output is correct
7	Correct	3 ms	7516 KB	Output is correct
8	Correct	3 ms	7260 KB	Output is correct
9	Correct	3 ms	7516 KB	Output is correct
10	Correct	40 ms	12376 KB	Output is correct
11	Correct	38 ms	12116 KB	Output is correct
12	Correct	40 ms	19764 KB	Output is correct
13	Correct	24 ms	10968 KB	Output is correct
14	Correct	38 ms	30880 KB	Output is correct

Subtask #6
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	8284 KB	Output is correct
2	Correct	21 ms	11356 KB	Output is correct
3	Correct	18 ms	11356 KB	Output is correct
4	Correct	21 ms	11544 KB	Output is correct
5	Correct	8 ms	10200 KB	Output is correct
6	Correct	18 ms	14684 KB	Output is correct
7	Correct	23 ms	18892 KB	Output is correct

Subtask #7
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7512 KB	Output is correct
2	Correct	3 ms	7516 KB	Output is correct
3	Correct	3 ms	7464 KB	Output is correct
4	Correct	3 ms	7512 KB	Output is correct
5	Correct	3 ms	7516 KB	Output is correct
6	Correct	3 ms	7492 KB	Output is correct
7	Correct	3 ms	7516 KB	Output is correct
8	Correct	3 ms	7260 KB	Output is correct
9	Correct	3 ms	7516 KB	Output is correct
10	Correct	4 ms	7516 KB	Output is correct
11	Correct	4 ms	7516 KB	Output is correct
12	Correct	3 ms	7512 KB	Output is correct
13	Correct	40 ms	31180 KB	Output is correct
14	Correct	59 ms	35156 KB	Output is correct
15	Correct	49 ms	31352 KB	Output is correct
16	Correct	40 ms	12376 KB	Output is correct
17	Correct	38 ms	12116 KB	Output is correct
18	Correct	40 ms	19764 KB	Output is correct
19	Correct	24 ms	10968 KB	Output is correct
20	Correct	38 ms	30880 KB	Output is correct
21	Correct	13 ms	8792 KB	Output is correct
22	Correct	43 ms	12624 KB	Output is correct
23	Correct	52 ms	14164 KB	Output is correct
24	Correct	77 ms	15956 KB	Output is correct
25	Correct	43 ms	14796 KB	Output is correct
26	Correct	64 ms	19796 KB	Output is correct
27	Correct	59 ms	21836 KB	Output is correct

Subtask #8
17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7512 KB	Output is correct
2	Correct	3 ms	7516 KB	Output is correct
3	Correct	3 ms	7464 KB	Output is correct
4	Correct	3 ms	7512 KB	Output is correct
5	Correct	3 ms	7516 KB	Output is correct
6	Correct	3 ms	7492 KB	Output is correct
7	Correct	3 ms	7516 KB	Output is correct
8	Correct	3 ms	7260 KB	Output is correct
9	Correct	3 ms	7516 KB	Output is correct
10	Correct	38 ms	13652 KB	Output is correct
11	Correct	29 ms	19844 KB	Output is correct
12	Correct	93 ms	17236 KB	Output is correct
13	Correct	50 ms	15564 KB	Output is correct
14	Correct	78 ms	18004 KB	Output is correct
15	Correct	4 ms	7516 KB	Output is correct
16	Correct	4 ms	7516 KB	Output is correct
17	Correct	3 ms	7512 KB	Output is correct
18	Correct	40 ms	31180 KB	Output is correct
19	Correct	59 ms	35156 KB	Output is correct
20	Correct	49 ms	31352 KB	Output is correct
21	Correct	36 ms	12808 KB	Output is correct
22	Correct	42 ms	12948 KB	Output is correct
23	Correct	34 ms	20564 KB	Output is correct
24	Correct	25 ms	11728 KB	Output is correct
25	Correct	39 ms	31312 KB	Output is correct
26	Correct	40 ms	12376 KB	Output is correct
27	Correct	38 ms	12116 KB	Output is correct
28	Correct	40 ms	19764 KB	Output is correct
29	Correct	24 ms	10968 KB	Output is correct
30	Correct	38 ms	30880 KB	Output is correct
31	Correct	7 ms	8284 KB	Output is correct
32	Correct	21 ms	11356 KB	Output is correct
33	Correct	18 ms	11356 KB	Output is correct
34	Correct	21 ms	11544 KB	Output is correct
35	Correct	8 ms	10200 KB	Output is correct
36	Correct	18 ms	14684 KB	Output is correct
37	Correct	23 ms	18892 KB	Output is correct
38	Correct	13 ms	8792 KB	Output is correct
39	Correct	43 ms	12624 KB	Output is correct
40	Correct	52 ms	14164 KB	Output is correct
41	Correct	77 ms	15956 KB	Output is correct
42	Correct	43 ms	14796 KB	Output is correct
43	Correct	64 ms	19796 KB	Output is correct
44	Correct	59 ms	21836 KB	Output is correct
45	Correct	15 ms	8796 KB	Output is correct
46	Correct	45 ms	12784 KB	Output is correct
47	Correct	49 ms	14420 KB	Output is correct
48	Correct	88 ms	16916 KB	Output is correct
49	Correct	55 ms	15568 KB	Output is correct
50	Correct	64 ms	20868 KB	Output is correct
51	Correct	58 ms	22644 KB	Output is correct

답안 #1083443

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