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답안 #1100485

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1100485 2024-10-14T04:59:42 Z sssamui 경주 (Race) (IOI11_race) C++17
100 / 100
 393 ms 108668 KB 
#include <iostream>
#include <cstdio>
#include <vector>
#include <cmath>
#include <map>
#include <algorithm>
using namespace std;
using ll = long long;

const int MXN = 2e5;

vector<vector<pair<int, ll>>> adj(MXN, vector<pair<int, ll>>(0));

vector<int> dep(MXN, 0);
vector<ll> dtr(MXN, 0);
vector<map<ll, int>> tmerg(MXN);

int ans = MXN;
int k;

void dfs(int node = 0, int p = -1)
{
	tmerg[node][dtr[node]] = dep[node];
	for (pair<int, ll> nxt : adj[node]) if (nxt.first != p)
	{
		dep[nxt.first] = dep[node] + 1, dtr[nxt.first] = dtr[node] + nxt.second;
		dfs(nxt.first, node);
		if (tmerg[node].size() < tmerg[nxt.first].size()) swap(tmerg[node], tmerg[nxt.first]);
		for (pair<ll, int> tins : tmerg[nxt.first]) if (tmerg[node].count(k - tins.first + 2 * dtr[node]) == 1) ans = fmin(ans, tins.second - 2 *
			dep[node] + tmerg[node][k - tins.first + 2 * dtr[node]]);
		for (pair<ll, int> tins : tmerg[nxt.first]) if ((tmerg[node].count(tins.first) == 0) || (tmerg[node][tins.first] > tins.second))
			tmerg[node][tins.first] = tins.second;
	}
}

int best_path(int N, int K, int H[][2], int L[])
{
	k = K;
	for (int i = 0; i < N - 1; i++) adj[H[i][0]].push_back({ H[i][1], L[i] }), adj[H[i][1]].push_back({ H[i][0], L[i] });
	dfs();
	if (ans == MXN) return -1;
	else return ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 18768 KB Output is correct
2 Correct 6 ms 18768 KB Output is correct
3 Correct 6 ms 18768 KB Output is correct
4 Correct 6 ms 18792 KB Output is correct
5 Correct 5 ms 18768 KB Output is correct
6 Correct 6 ms 18972 KB Output is correct
7 Correct 6 ms 18768 KB Output is correct
8 Correct 6 ms 18952 KB Output is correct
9 Correct 6 ms 18780 KB Output is correct
10 Correct 5 ms 18780 KB Output is correct
11 Correct 6 ms 18816 KB Output is correct
12 Correct 5 ms 18780 KB Output is correct
13 Correct 6 ms 18780 KB Output is correct
14 Correct 6 ms 18784 KB Output is correct
15 Correct 5 ms 18780 KB Output is correct
16 Correct 6 ms 18780 KB Output is correct
17 Correct 5 ms 18768 KB Output is correct
18 Correct 6 ms 18768 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 18768 KB Output is correct
2 Correct 6 ms 18768 KB Output is correct
3 Correct 6 ms 18768 KB Output is correct
4 Correct 6 ms 18792 KB Output is correct
5 Correct 5 ms 18768 KB Output is correct
6 Correct 6 ms 18972 KB Output is correct
7 Correct 6 ms 18768 KB Output is correct
8 Correct 6 ms 18952 KB Output is correct
9 Correct 6 ms 18780 KB Output is correct
10 Correct 5 ms 18780 KB Output is correct
11 Correct 6 ms 18816 KB Output is correct
12 Correct 5 ms 18780 KB Output is correct
13 Correct 6 ms 18780 KB Output is correct
14 Correct 6 ms 18784 KB Output is correct
15 Correct 5 ms 18780 KB Output is correct
16 Correct 6 ms 18780 KB Output is correct
17 Correct 5 ms 18768 KB Output is correct
18 Correct 6 ms 18768 KB Output is correct
19 Correct 5 ms 18768 KB Output is correct
20 Correct 5 ms 18768 KB Output is correct
21 Correct 7 ms 19024 KB Output is correct
22 Correct 6 ms 19180 KB Output is correct
23 Correct 7 ms 19024 KB Output is correct
24 Correct 7 ms 19192 KB Output is correct
25 Correct 7 ms 19024 KB Output is correct
26 Correct 9 ms 19024 KB Output is correct
27 Correct 6 ms 19024 KB Output is correct
28 Correct 6 ms 19024 KB Output is correct
29 Correct 6 ms 19192 KB Output is correct
30 Correct 6 ms 19024 KB Output is correct
31 Correct 6 ms 19024 KB Output is correct
32 Correct 6 ms 19024 KB Output is correct
33 Correct 6 ms 19192 KB Output is correct
34 Correct 7 ms 19036 KB Output is correct
35 Correct 6 ms 19292 KB Output is correct
36 Correct 6 ms 19036 KB Output is correct
37 Correct 6 ms 19024 KB Output is correct
38 Correct 7 ms 19024 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 18768 KB Output is correct
2 Correct 6 ms 18768 KB Output is correct
3 Correct 6 ms 18768 KB Output is correct
4 Correct 6 ms 18792 KB Output is correct
5 Correct 5 ms 18768 KB Output is correct
6 Correct 6 ms 18972 KB Output is correct
7 Correct 6 ms 18768 KB Output is correct
8 Correct 6 ms 18952 KB Output is correct
9 Correct 6 ms 18780 KB Output is correct
10 Correct 5 ms 18780 KB Output is correct
11 Correct 6 ms 18816 KB Output is correct
12 Correct 5 ms 18780 KB Output is correct
13 Correct 6 ms 18780 KB Output is correct
14 Correct 6 ms 18784 KB Output is correct
15 Correct 5 ms 18780 KB Output is correct
16 Correct 6 ms 18780 KB Output is correct
17 Correct 5 ms 18768 KB Output is correct
18 Correct 6 ms 18768 KB Output is correct
19 Correct 92 ms 41800 KB Output is correct
20 Correct 81 ms 42980 KB Output is correct
21 Correct 93 ms 42836 KB Output is correct
22 Correct 88 ms 42324 KB Output is correct
23 Correct 129 ms 55396 KB Output is correct
24 Correct 91 ms 45396 KB Output is correct
25 Correct 94 ms 44760 KB Output is correct
26 Correct 61 ms 53576 KB Output is correct
27 Correct 140 ms 53808 KB Output is correct
28 Correct 237 ms 99224 KB Output is correct
29 Correct 249 ms 97052 KB Output is correct
30 Correct 147 ms 53844 KB Output is correct
31 Correct 133 ms 53840 KB Output is correct
32 Correct 169 ms 54096 KB Output is correct
33 Correct 150 ms 58768 KB Output is correct
34 Correct 256 ms 91548 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 18768 KB Output is correct
2 Correct 6 ms 18768 KB Output is correct
3 Correct 6 ms 18768 KB Output is correct
4 Correct 6 ms 18792 KB Output is correct
5 Correct 5 ms 18768 KB Output is correct
6 Correct 6 ms 18972 KB Output is correct
7 Correct 6 ms 18768 KB Output is correct
8 Correct 6 ms 18952 KB Output is correct
9 Correct 6 ms 18780 KB Output is correct
10 Correct 5 ms 18780 KB Output is correct
11 Correct 6 ms 18816 KB Output is correct
12 Correct 5 ms 18780 KB Output is correct
13 Correct 6 ms 18780 KB Output is correct
14 Correct 6 ms 18784 KB Output is correct
15 Correct 5 ms 18780 KB Output is correct
16 Correct 6 ms 18780 KB Output is correct
17 Correct 5 ms 18768 KB Output is correct
18 Correct 6 ms 18768 KB Output is correct
19 Correct 5 ms 18768 KB Output is correct
20 Correct 5 ms 18768 KB Output is correct
21 Correct 7 ms 19024 KB Output is correct
22 Correct 6 ms 19180 KB Output is correct
23 Correct 7 ms 19024 KB Output is correct
24 Correct 7 ms 19192 KB Output is correct
25 Correct 7 ms 19024 KB Output is correct
26 Correct 9 ms 19024 KB Output is correct
27 Correct 6 ms 19024 KB Output is correct
28 Correct 6 ms 19024 KB Output is correct
29 Correct 6 ms 19192 KB Output is correct
30 Correct 6 ms 19024 KB Output is correct
31 Correct 6 ms 19024 KB Output is correct
32 Correct 6 ms 19024 KB Output is correct
33 Correct 6 ms 19192 KB Output is correct
34 Correct 7 ms 19036 KB Output is correct
35 Correct 6 ms 19292 KB Output is correct
36 Correct 6 ms 19036 KB Output is correct
37 Correct 6 ms 19024 KB Output is correct
38 Correct 7 ms 19024 KB Output is correct
39 Correct 92 ms 41800 KB Output is correct
40 Correct 81 ms 42980 KB Output is correct
41 Correct 93 ms 42836 KB Output is correct
42 Correct 88 ms 42324 KB Output is correct
43 Correct 129 ms 55396 KB Output is correct
44 Correct 91 ms 45396 KB Output is correct
45 Correct 94 ms 44760 KB Output is correct
46 Correct 61 ms 53576 KB Output is correct
47 Correct 140 ms 53808 KB Output is correct
48 Correct 237 ms 99224 KB Output is correct
49 Correct 249 ms 97052 KB Output is correct
50 Correct 147 ms 53844 KB Output is correct
51 Correct 133 ms 53840 KB Output is correct
52 Correct 169 ms 54096 KB Output is correct
53 Correct 150 ms 58768 KB Output is correct
54 Correct 256 ms 91548 KB Output is correct
55 Correct 15 ms 22096 KB Output is correct
56 Correct 11 ms 20816 KB Output is correct
57 Correct 61 ms 40668 KB Output is correct
58 Correct 40 ms 33464 KB Output is correct
59 Correct 92 ms 59956 KB Output is correct
60 Correct 239 ms 97608 KB Output is correct
61 Correct 179 ms 57424 KB Output is correct
62 Correct 140 ms 53832 KB Output is correct
63 Correct 187 ms 53832 KB Output is correct
64 Correct 393 ms 108668 KB Output is correct
65 Correct 368 ms 106824 KB Output is correct
66 Correct 314 ms 92600 KB Output is correct
67 Correct 132 ms 47608 KB Output is correct
68 Correct 277 ms 70212 KB Output is correct
69 Correct 305 ms 75108 KB Output is correct
70 Correct 279 ms 68092 KB Output is correct