oj.uz

답안 #722235

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
722235 2023-04-11T15:28:30 Z 600Mihnea Worst Reporter 4 (JOI21_worst_reporter4) C++17
14 / 100
 2000 ms 27728 KB 
#include <cmath>
#include <functional>
#include <fstream>
#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <set>
#include <map>
#include <list>
#include <time.h>
#include <math.h>
#include <random>
#include <deque>
#include <cassert>
#include <queue>
#include <unordered_map>
#include <unordered_set>
#include <iomanip>
#include <bitset>
#include <sstream>
#include <stack>
#include <chrono>
#include <cstring>
#include <numeric>
using namespace std;
typedef long long ll;
const int N = 200000 + 7;
const ll INF = (ll)1e18 + 7;
int n;
int par[N];
int h[N];
int c[N];
vector<int> g[N];
int dep[N];
ll dp[N];
ll dp2[N];
ll get(int a) {
	ll sol = c[a];
	for (auto& b : g[a]) {
		sol += dp2[b];
	}
	sol = min(sol, dp[a]);
	return sol;
}
void compute(int a) {
	dp[a] = 0;
	for (auto& b : g[a]) {
		dp[a] += dp2[b];
	}
	dp2[a] = dp[a];


	a = par[a];
	while (a) {
		dp2[a] = get(a);
		a = par[a];
	}
}
void build1(int a) {
	dp2[a] = c[a];
	for (auto& b : g[a]) {
		dep[b] = 1 + dep[a];
		build1(b);
		dp2[a] += dp2[b];
	}
}
signed main() {
#ifdef ONPC	
	FILE* stream;
	freopen_s(&stream, "input.txt", "r", stdin);
#else
	ios::sync_with_stdio(false);
	cin.tie(0); cout.tie(0);
#endif
	cin >> n;
	for (int i = 1; i <= n; i++) {
		cin >> par[i] >> h[i] >> c[i];
		dp[i] = INF;
	}
	assert(par[1] == 1);
	par[1] = 0;
	for (int i = 2; i <= n; i++) {
		assert(1 <= par[i] && par[i] <= i - 1);
		g[par[i]].push_back(i);
	}
	build1(1);
	vector<int> ord(n);
	iota(ord.begin(), ord.end(), 1);
	sort(ord.begin(), ord.end(), [&](int a, int b) {
		if (h[a] != h[b]) {
			return h[a] > h[b];
		}
		return dep[a] > dep[b];
	});
	for (auto& a : ord) {
		compute(a);
	}
	cout << get(1) << "\n";
	return 0;
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 8 ms 5204 KB Output is correct
6 Correct 6 ms 5204 KB Output is correct
7 Correct 6 ms 5252 KB Output is correct
8 Correct 6 ms 5204 KB Output is correct
9 Correct 6 ms 5204 KB Output is correct
10 Correct 6 ms 5204 KB Output is correct
11 Correct 6 ms 5204 KB Output is correct
12 Correct 58 ms 5588 KB Output is correct
13 Correct 52 ms 5588 KB Output is correct
14 Correct 28 ms 5504 KB Output is correct
15 Correct 32 ms 5500 KB Output is correct
16 Correct 5 ms 5204 KB Output is correct
17 Correct 6 ms 5204 KB Output is correct
18 Correct 5 ms 5308 KB Output is correct
19 Correct 33 ms 5332 KB Output is correct
20 Correct 33 ms 5412 KB Output is correct
21 Correct 33 ms 5404 KB Output is correct
22 Correct 23 ms 5272 KB Output is correct
23 Correct 22 ms 5276 KB Output is correct
24 Correct 49 ms 5332 KB Output is correct
25 Correct 46 ms 5332 KB Output is correct
26 Correct 54 ms 5604 KB Output is correct
27 Correct 40 ms 5364 KB Output is correct
28 Correct 59 ms 5460 KB Output is correct
29 Correct 69 ms 5460 KB Output is correct
30 Correct 29 ms 5460 KB Output is correct
31 Correct 31 ms 5460 KB Output is correct

Subtask #2
0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 8 ms 5204 KB Output is correct
6 Correct 6 ms 5204 KB Output is correct
7 Correct 6 ms 5252 KB Output is correct
8 Correct 6 ms 5204 KB Output is correct
9 Correct 6 ms 5204 KB Output is correct
10 Correct 6 ms 5204 KB Output is correct
11 Correct 6 ms 5204 KB Output is correct
12 Correct 58 ms 5588 KB Output is correct
13 Correct 52 ms 5588 KB Output is correct
14 Correct 28 ms 5504 KB Output is correct
15 Correct 32 ms 5500 KB Output is correct
16 Correct 5 ms 5204 KB Output is correct
17 Correct 6 ms 5204 KB Output is correct
18 Correct 5 ms 5308 KB Output is correct
19 Correct 33 ms 5332 KB Output is correct
20 Correct 33 ms 5412 KB Output is correct
21 Correct 33 ms 5404 KB Output is correct
22 Correct 23 ms 5272 KB Output is correct
23 Correct 22 ms 5276 KB Output is correct
24 Correct 49 ms 5332 KB Output is correct
25 Correct 46 ms 5332 KB Output is correct
26 Correct 54 ms 5604 KB Output is correct
27 Correct 40 ms 5364 KB Output is correct
28 Correct 59 ms 5460 KB Output is correct
29 Correct 69 ms 5460 KB Output is correct
30 Correct 29 ms 5460 KB Output is correct
31 Correct 31 ms 5460 KB Output is correct
32 Correct 6 ms 5204 KB Output is correct
33 Correct 241 ms 15276 KB Output is correct
34 Correct 234 ms 15180 KB Output is correct
35 Correct 245 ms 15188 KB Output is correct
36 Correct 265 ms 15180 KB Output is correct
37 Correct 211 ms 15232 KB Output is correct
38 Correct 211 ms 15260 KB Output is correct
39 Execution timed out 2074 ms 27728 KB Time limit exceeded
40 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 8 ms 5204 KB Output is correct
6 Correct 6 ms 5204 KB Output is correct
7 Correct 6 ms 5252 KB Output is correct
8 Correct 6 ms 5204 KB Output is correct
9 Correct 6 ms 5204 KB Output is correct
10 Correct 6 ms 5204 KB Output is correct
11 Correct 6 ms 5204 KB Output is correct
12 Correct 58 ms 5588 KB Output is correct
13 Correct 52 ms 5588 KB Output is correct
14 Correct 28 ms 5504 KB Output is correct
15 Correct 32 ms 5500 KB Output is correct
16 Correct 5 ms 5204 KB Output is correct
17 Correct 6 ms 5204 KB Output is correct
18 Correct 5 ms 5308 KB Output is correct
19 Correct 33 ms 5332 KB Output is correct
20 Correct 33 ms 5412 KB Output is correct
21 Correct 33 ms 5404 KB Output is correct
22 Correct 23 ms 5272 KB Output is correct
23 Correct 22 ms 5276 KB Output is correct
24 Correct 49 ms 5332 KB Output is correct
25 Correct 46 ms 5332 KB Output is correct
26 Correct 54 ms 5604 KB Output is correct
27 Correct 40 ms 5364 KB Output is correct
28 Correct 59 ms 5460 KB Output is correct
29 Correct 69 ms 5460 KB Output is correct
30 Correct 29 ms 5460 KB Output is correct
31 Correct 31 ms 5460 KB Output is correct
32 Correct 6 ms 5204 KB Output is correct
33 Correct 241 ms 15276 KB Output is correct
34 Correct 234 ms 15180 KB Output is correct
35 Correct 245 ms 15188 KB Output is correct
36 Correct 265 ms 15180 KB Output is correct
37 Correct 211 ms 15232 KB Output is correct
38 Correct 211 ms 15260 KB Output is correct
39 Execution timed out 2074 ms 27728 KB Time limit exceeded
40 Halted 0 ms 0 KB -