oj.uz

답안 #819860

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
819860 2023-08-10T14:29:28 Z OAleksa 경주 (Race) (IOI11_race) C++14
100 / 100
 424 ms 84560 KB 
#include <bits/stdc++.h>
//#include "factories.h"
//#include "wall.h"
#include "race.h"
#define f first
#define s second
using namespace std; 
const int maxn = 2e5 + 69;
vector<pair<int, int>> g[maxn];
map<int, int> m[maxn];
vector<int> dep(maxn), sum(maxn);
int ans = 1e9;
void dfs(int v,int p) {
	for(auto u : g[v]) {
		if(u.f != p) {
			dep[u.f] = dep[v] + 1;
			sum[u.f] = sum[v] + u.s;
			dfs(u.f, v);
		}
	}
}

void dfs2(int v, int p, int t) {
	m[v][sum[v]] = dep[v];
	for(auto u : g[v]) {
		if(u.f != p) {
			dfs2(u.f, v, t);
			if(m[u.f].size() > m[v].size())
				swap(m[u.f], m[v]);
			for(auto it : m[u.f]) {
				int trazim = t + 2 * sum[v] - it.f;
				if(m[v].count(trazim))
					ans = min(ans, it.s + m[v][trazim] - 2 * dep[v]);
			}
			for(auto it : m[u.f]) {
				if(m[v].count(it.f))
					m[v][it.f] = min(m[v][it.f], it.s);
				else
					m[v][it.f] = it.s;
			}
		}
	}
}

int best_path(int N, int K, int H[][2], int L[])
{
	for(int i = 0;i < N - 1;i++) {
		g[H[i][1]].push_back({H[i][0], L[i]});
		g[H[i][0]].push_back({H[i][1], L[i]});
	}
  	dfs(0, -1);
  	dfs2(0, -1, K);
  	if(ans == 1e9)
  		ans = -1;
  	return ans;
}


// signed main()
// {
	// ios_base::sync_with_stdio(false);
	// cin.tie(0);
	// cout.tie(0);
	// int tt = 1;
	// //cin >> tt;
	// while(tt--) {
		// int n, k;
		// cin >> n >> k;
		// int h[n - 1][2], l[n - 1];
		// for(int i = 0;i < n - 1;i++) 
			// cin >> h[i][0] >> h[i][1] >> l[i];
		// cout << best_path(n, k, h, l);
	// }
   // return 0;
// }

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 15956 KB Output is correct
2 Correct 8 ms 15972 KB Output is correct
3 Correct 7 ms 15956 KB Output is correct
4 Correct 8 ms 15956 KB Output is correct
5 Correct 8 ms 15988 KB Output is correct
6 Correct 8 ms 15952 KB Output is correct
7 Correct 8 ms 15956 KB Output is correct
8 Correct 10 ms 15956 KB Output is correct
9 Correct 8 ms 15956 KB Output is correct
10 Correct 8 ms 15956 KB Output is correct
11 Correct 8 ms 15956 KB Output is correct
12 Correct 8 ms 15956 KB Output is correct
13 Correct 8 ms 15956 KB Output is correct
14 Correct 8 ms 15956 KB Output is correct
15 Correct 8 ms 15956 KB Output is correct
16 Correct 9 ms 15928 KB Output is correct
17 Correct 10 ms 15996 KB Output is correct
18 Correct 8 ms 15956 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 15956 KB Output is correct
2 Correct 8 ms 15972 KB Output is correct
3 Correct 7 ms 15956 KB Output is correct
4 Correct 8 ms 15956 KB Output is correct
5 Correct 8 ms 15988 KB Output is correct
6 Correct 8 ms 15952 KB Output is correct
7 Correct 8 ms 15956 KB Output is correct
8 Correct 10 ms 15956 KB Output is correct
9 Correct 8 ms 15956 KB Output is correct
10 Correct 8 ms 15956 KB Output is correct
11 Correct 8 ms 15956 KB Output is correct
12 Correct 8 ms 15956 KB Output is correct
13 Correct 8 ms 15956 KB Output is correct
14 Correct 8 ms 15956 KB Output is correct
15 Correct 8 ms 15956 KB Output is correct
16 Correct 9 ms 15928 KB Output is correct
17 Correct 10 ms 15996 KB Output is correct
18 Correct 8 ms 15956 KB Output is correct
19 Correct 9 ms 15996 KB Output is correct
20 Correct 9 ms 15956 KB Output is correct
21 Correct 9 ms 16108 KB Output is correct
22 Correct 9 ms 16212 KB Output is correct
23 Correct 10 ms 16212 KB Output is correct
24 Correct 10 ms 16128 KB Output is correct
25 Correct 9 ms 16128 KB Output is correct
26 Correct 9 ms 16168 KB Output is correct
27 Correct 8 ms 16084 KB Output is correct
28 Correct 9 ms 16212 KB Output is correct
29 Correct 9 ms 16128 KB Output is correct
30 Correct 9 ms 16124 KB Output is correct
31 Correct 8 ms 16128 KB Output is correct
32 Correct 8 ms 16124 KB Output is correct
33 Correct 9 ms 16212 KB Output is correct
34 Correct 8 ms 16084 KB Output is correct
35 Correct 9 ms 16084 KB Output is correct
36 Correct 10 ms 16084 KB Output is correct
37 Correct 8 ms 16096 KB Output is correct
38 Correct 8 ms 16084 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 15956 KB Output is correct
2 Correct 8 ms 15972 KB Output is correct
3 Correct 7 ms 15956 KB Output is correct
4 Correct 8 ms 15956 KB Output is correct
5 Correct 8 ms 15988 KB Output is correct
6 Correct 8 ms 15952 KB Output is correct
7 Correct 8 ms 15956 KB Output is correct
8 Correct 10 ms 15956 KB Output is correct
9 Correct 8 ms 15956 KB Output is correct
10 Correct 8 ms 15956 KB Output is correct
11 Correct 8 ms 15956 KB Output is correct
12 Correct 8 ms 15956 KB Output is correct
13 Correct 8 ms 15956 KB Output is correct
14 Correct 8 ms 15956 KB Output is correct
15 Correct 8 ms 15956 KB Output is correct
16 Correct 9 ms 15928 KB Output is correct
17 Correct 10 ms 15996 KB Output is correct
18 Correct 8 ms 15956 KB Output is correct
19 Correct 104 ms 33888 KB Output is correct
20 Correct 110 ms 33808 KB Output is correct
21 Correct 99 ms 33652 KB Output is correct
22 Correct 108 ms 33392 KB Output is correct
23 Correct 141 ms 42968 KB Output is correct
24 Correct 120 ms 35944 KB Output is correct
25 Correct 81 ms 35020 KB Output is correct
26 Correct 63 ms 41932 KB Output is correct
27 Correct 161 ms 43112 KB Output is correct
28 Correct 232 ms 77636 KB Output is correct
29 Correct 247 ms 76060 KB Output is correct
30 Correct 167 ms 43096 KB Output is correct
31 Correct 174 ms 43100 KB Output is correct
32 Correct 251 ms 43264 KB Output is correct
33 Correct 189 ms 46460 KB Output is correct
34 Correct 285 ms 71504 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 15956 KB Output is correct
2 Correct 8 ms 15972 KB Output is correct
3 Correct 7 ms 15956 KB Output is correct
4 Correct 8 ms 15956 KB Output is correct
5 Correct 8 ms 15988 KB Output is correct
6 Correct 8 ms 15952 KB Output is correct
7 Correct 8 ms 15956 KB Output is correct
8 Correct 10 ms 15956 KB Output is correct
9 Correct 8 ms 15956 KB Output is correct
10 Correct 8 ms 15956 KB Output is correct
11 Correct 8 ms 15956 KB Output is correct
12 Correct 8 ms 15956 KB Output is correct
13 Correct 8 ms 15956 KB Output is correct
14 Correct 8 ms 15956 KB Output is correct
15 Correct 8 ms 15956 KB Output is correct
16 Correct 9 ms 15928 KB Output is correct
17 Correct 10 ms 15996 KB Output is correct
18 Correct 8 ms 15956 KB Output is correct
19 Correct 9 ms 15996 KB Output is correct
20 Correct 9 ms 15956 KB Output is correct
21 Correct 9 ms 16108 KB Output is correct
22 Correct 9 ms 16212 KB Output is correct
23 Correct 10 ms 16212 KB Output is correct
24 Correct 10 ms 16128 KB Output is correct
25 Correct 9 ms 16128 KB Output is correct
26 Correct 9 ms 16168 KB Output is correct
27 Correct 8 ms 16084 KB Output is correct
28 Correct 9 ms 16212 KB Output is correct
29 Correct 9 ms 16128 KB Output is correct
30 Correct 9 ms 16124 KB Output is correct
31 Correct 8 ms 16128 KB Output is correct
32 Correct 8 ms 16124 KB Output is correct
33 Correct 9 ms 16212 KB Output is correct
34 Correct 8 ms 16084 KB Output is correct
35 Correct 9 ms 16084 KB Output is correct
36 Correct 10 ms 16084 KB Output is correct
37 Correct 8 ms 16096 KB Output is correct
38 Correct 8 ms 16084 KB Output is correct
39 Correct 104 ms 33888 KB Output is correct
40 Correct 110 ms 33808 KB Output is correct
41 Correct 99 ms 33652 KB Output is correct
42 Correct 108 ms 33392 KB Output is correct
43 Correct 141 ms 42968 KB Output is correct
44 Correct 120 ms 35944 KB Output is correct
45 Correct 81 ms 35020 KB Output is correct
46 Correct 63 ms 41932 KB Output is correct
47 Correct 161 ms 43112 KB Output is correct
48 Correct 232 ms 77636 KB Output is correct
49 Correct 247 ms 76060 KB Output is correct
50 Correct 167 ms 43096 KB Output is correct
51 Correct 174 ms 43100 KB Output is correct
52 Correct 251 ms 43264 KB Output is correct
53 Correct 189 ms 46460 KB Output is correct
54 Correct 285 ms 71504 KB Output is correct
55 Correct 19 ms 18516 KB Output is correct
56 Correct 17 ms 17388 KB Output is correct
57 Correct 57 ms 31864 KB Output is correct
58 Correct 45 ms 26832 KB Output is correct
59 Correct 72 ms 46652 KB Output is correct
60 Correct 235 ms 76368 KB Output is correct
61 Correct 192 ms 45788 KB Output is correct
62 Correct 150 ms 43148 KB Output is correct
63 Correct 219 ms 43228 KB Output is correct
64 Correct 424 ms 84560 KB Output is correct
65 Correct 397 ms 83344 KB Output is correct
66 Correct 360 ms 72564 KB Output is correct
67 Correct 138 ms 39068 KB Output is correct
68 Correct 321 ms 56104 KB Output is correct
69 Correct 341 ms 59928 KB Output is correct
70 Correct 293 ms 54432 KB Output is correct