답안 #764060

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
764060	2023-06-23T06:25:17 Z	Ryuga_	경주 (Race) (IOI11_race)	C++17	100 / 100	429 ms	104096 KB

race

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<ll, ll> pii;

#define pb push_back

#define f first
#define s second

const int maxn = 2e5 + 1;
vector<pii> adj[maxn];
map<ll, ll> info[maxn];
ll dist[maxn], sum[maxn];  // define these relative to root
int N, K;
ll ret;

void precomp(int u, int p, ll c, int h) {
	info[u][c] = h;
	sum[u] = c;
	dist[u] = h;
	for (auto n : adj[u]) {
		if (p == n.f) { continue; }
		precomp(n.f, u, c + n.s, h + 1);
	}
}

void small_to_large_merge(int u, int p) {
	ll target = K + 2 * sum[u];
	for (auto n : adj[u]) {
		if (n.f == p) { continue; }
		small_to_large_merge(n.f, u);
		if (info[n.f].size() > info[u].size()) { swap(info[n.f], info[u]); }
		for (auto i : info[n.f]) {
			if (info[u].find(target - i.f) != info[u].end()) {
				ret = min(ret, info[u][target - i.f] + i.s - 2 * dist[u]);
			}
		}
		for (auto i : info[n.f]) {
			if (info[u].find(i.f) == info[u].end()) {
				info[u].insert(i);
			} else {
				info[u][i.f] = min(info[u][i.f], i.s);
			}
		}
	}
}

int best_path(int n, int k, int edges[][2], int weights[]) {
	if (k == 1) { return 0; }
	N = n;
	K = k;
	ret = INT_MAX;
	for (int i = 0; i < n - 1; i++) {
		int u = edges[i][0];
		int v = edges[i][1];
		adj[u].pb(pii(v, weights[i]));
		adj[v].pb(pii(u, weights[i]));
	}
	precomp(0, -1, 0, 0);
	small_to_large_merge(0, -1);
	return ret == INT_MAX ? -1 : ret;
}

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	14420 KB	Output is correct
2	Correct	7 ms	14340 KB	Output is correct
3	Correct	7 ms	14440 KB	Output is correct
4	Correct	7 ms	14420 KB	Output is correct
5	Correct	7 ms	14420 KB	Output is correct
6	Correct	7 ms	14420 KB	Output is correct
7	Correct	7 ms	14420 KB	Output is correct
8	Correct	7 ms	14336 KB	Output is correct
9	Correct	7 ms	14420 KB	Output is correct
10	Correct	7 ms	14420 KB	Output is correct
11	Correct	7 ms	14420 KB	Output is correct
12	Correct	9 ms	14400 KB	Output is correct
13	Correct	7 ms	14424 KB	Output is correct
14	Correct	7 ms	14420 KB	Output is correct
15	Correct	9 ms	14420 KB	Output is correct
16	Correct	10 ms	14400 KB	Output is correct
17	Correct	7 ms	14432 KB	Output is correct
18	Correct	7 ms	14420 KB	Output is correct

Subtask #2
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	14420 KB	Output is correct
2	Correct	7 ms	14340 KB	Output is correct
3	Correct	7 ms	14440 KB	Output is correct
4	Correct	7 ms	14420 KB	Output is correct
5	Correct	7 ms	14420 KB	Output is correct
6	Correct	7 ms	14420 KB	Output is correct
7	Correct	7 ms	14420 KB	Output is correct
8	Correct	7 ms	14336 KB	Output is correct
9	Correct	7 ms	14420 KB	Output is correct
10	Correct	7 ms	14420 KB	Output is correct
11	Correct	7 ms	14420 KB	Output is correct
12	Correct	9 ms	14400 KB	Output is correct
13	Correct	7 ms	14424 KB	Output is correct
14	Correct	7 ms	14420 KB	Output is correct
15	Correct	9 ms	14420 KB	Output is correct
16	Correct	10 ms	14400 KB	Output is correct
17	Correct	7 ms	14432 KB	Output is correct
18	Correct	7 ms	14420 KB	Output is correct
19	Correct	7 ms	14420 KB	Output is correct
20	Correct	9 ms	14420 KB	Output is correct
21	Correct	8 ms	14688 KB	Output is correct
22	Correct	8 ms	14676 KB	Output is correct
23	Correct	8 ms	14724 KB	Output is correct
24	Correct	8 ms	14676 KB	Output is correct
25	Correct	9 ms	14676 KB	Output is correct
26	Correct	8 ms	14676 KB	Output is correct
27	Correct	7 ms	14548 KB	Output is correct
28	Correct	8 ms	14676 KB	Output is correct
29	Correct	8 ms	14676 KB	Output is correct
30	Correct	8 ms	14676 KB	Output is correct
31	Correct	8 ms	14676 KB	Output is correct
32	Correct	10 ms	14628 KB	Output is correct
33	Correct	8 ms	14676 KB	Output is correct
34	Correct	7 ms	14676 KB	Output is correct
35	Correct	7 ms	14676 KB	Output is correct
36	Correct	7 ms	14676 KB	Output is correct
37	Correct	7 ms	14548 KB	Output is correct
38	Correct	9 ms	14620 KB	Output is correct

Subtask #3
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	14420 KB	Output is correct
2	Correct	7 ms	14340 KB	Output is correct
3	Correct	7 ms	14440 KB	Output is correct
4	Correct	7 ms	14420 KB	Output is correct
5	Correct	7 ms	14420 KB	Output is correct
6	Correct	7 ms	14420 KB	Output is correct
7	Correct	7 ms	14420 KB	Output is correct
8	Correct	7 ms	14336 KB	Output is correct
9	Correct	7 ms	14420 KB	Output is correct
10	Correct	7 ms	14420 KB	Output is correct
11	Correct	7 ms	14420 KB	Output is correct
12	Correct	9 ms	14400 KB	Output is correct
13	Correct	7 ms	14424 KB	Output is correct
14	Correct	7 ms	14420 KB	Output is correct
15	Correct	9 ms	14420 KB	Output is correct
16	Correct	10 ms	14400 KB	Output is correct
17	Correct	7 ms	14432 KB	Output is correct
18	Correct	7 ms	14420 KB	Output is correct
19	Correct	113 ms	37880 KB	Output is correct
20	Correct	120 ms	37788 KB	Output is correct
21	Correct	117 ms	37552 KB	Output is correct
22	Correct	118 ms	37032 KB	Output is correct
23	Correct	160 ms	49892 KB	Output is correct
24	Correct	117 ms	39896 KB	Output is correct
25	Correct	104 ms	38632 KB	Output is correct
26	Correct	56 ms	46868 KB	Output is correct
27	Correct	175 ms	49676 KB	Output is correct
28	Correct	267 ms	91728 KB	Output is correct
29	Correct	270 ms	89872 KB	Output is correct
30	Correct	185 ms	49612 KB	Output is correct
31	Correct	175 ms	49704 KB	Output is correct
32	Correct	253 ms	49756 KB	Output is correct
33	Correct	238 ms	54604 KB	Output is correct
34	Correct	331 ms	86508 KB	Output is correct

Subtask #4
57.0 / 57.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	14420 KB	Output is correct
2	Correct	7 ms	14340 KB	Output is correct
3	Correct	7 ms	14440 KB	Output is correct
4	Correct	7 ms	14420 KB	Output is correct
5	Correct	7 ms	14420 KB	Output is correct
6	Correct	7 ms	14420 KB	Output is correct
7	Correct	7 ms	14420 KB	Output is correct
8	Correct	7 ms	14336 KB	Output is correct
9	Correct	7 ms	14420 KB	Output is correct
10	Correct	7 ms	14420 KB	Output is correct
11	Correct	7 ms	14420 KB	Output is correct
12	Correct	9 ms	14400 KB	Output is correct
13	Correct	7 ms	14424 KB	Output is correct
14	Correct	7 ms	14420 KB	Output is correct
15	Correct	9 ms	14420 KB	Output is correct
16	Correct	10 ms	14400 KB	Output is correct
17	Correct	7 ms	14432 KB	Output is correct
18	Correct	7 ms	14420 KB	Output is correct
19	Correct	7 ms	14420 KB	Output is correct
20	Correct	9 ms	14420 KB	Output is correct
21	Correct	8 ms	14688 KB	Output is correct
22	Correct	8 ms	14676 KB	Output is correct
23	Correct	8 ms	14724 KB	Output is correct
24	Correct	8 ms	14676 KB	Output is correct
25	Correct	9 ms	14676 KB	Output is correct
26	Correct	8 ms	14676 KB	Output is correct
27	Correct	7 ms	14548 KB	Output is correct
28	Correct	8 ms	14676 KB	Output is correct
29	Correct	8 ms	14676 KB	Output is correct
30	Correct	8 ms	14676 KB	Output is correct
31	Correct	8 ms	14676 KB	Output is correct
32	Correct	10 ms	14628 KB	Output is correct
33	Correct	8 ms	14676 KB	Output is correct
34	Correct	7 ms	14676 KB	Output is correct
35	Correct	7 ms	14676 KB	Output is correct
36	Correct	7 ms	14676 KB	Output is correct
37	Correct	7 ms	14548 KB	Output is correct
38	Correct	9 ms	14620 KB	Output is correct
39	Correct	113 ms	37880 KB	Output is correct
40	Correct	120 ms	37788 KB	Output is correct
41	Correct	117 ms	37552 KB	Output is correct
42	Correct	118 ms	37032 KB	Output is correct
43	Correct	160 ms	49892 KB	Output is correct
44	Correct	117 ms	39896 KB	Output is correct
45	Correct	104 ms	38632 KB	Output is correct
46	Correct	56 ms	46868 KB	Output is correct
47	Correct	175 ms	49676 KB	Output is correct
48	Correct	267 ms	91728 KB	Output is correct
49	Correct	270 ms	89872 KB	Output is correct
50	Correct	185 ms	49612 KB	Output is correct
51	Correct	175 ms	49704 KB	Output is correct
52	Correct	253 ms	49756 KB	Output is correct
53	Correct	238 ms	54604 KB	Output is correct
54	Correct	331 ms	86508 KB	Output is correct
55	Correct	18 ms	17748 KB	Output is correct
56	Correct	13 ms	16452 KB	Output is correct
57	Correct	64 ms	35280 KB	Output is correct
58	Correct	46 ms	28128 KB	Output is correct
59	Correct	85 ms	53028 KB	Output is correct
60	Correct	257 ms	90492 KB	Output is correct
61	Correct	198 ms	52964 KB	Output is correct
62	Correct	171 ms	49584 KB	Output is correct
63	Correct	255 ms	49784 KB	Output is correct
64	Correct	429 ms	104096 KB	Output is correct
65	Correct	405 ms	101752 KB	Output is correct
66	Correct	275 ms	85644 KB	Output is correct
67	Correct	160 ms	42100 KB	Output is correct
68	Correct	322 ms	65424 KB	Output is correct
69	Correct	377 ms	70092 KB	Output is correct
70	Correct	319 ms	63120 KB	Output is correct

답안 #764060

Compilation message

Subtask #1 9.0 / 9.0

Subtask #2 12.0 / 12.0

Subtask #3 22.0 / 22.0

Subtask #4 57.0 / 57.0

Subtask #1
9.0 / 9.0

Subtask #2
12.0 / 12.0

Subtask #3
22.0 / 22.0

Subtask #4
57.0 / 57.0