답안 #199209

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
199209	2020-01-30T08:58:36 Z	dennisstar	경주 (Race) (IOI11_race)	C++17	100 / 100	1172 ms	35576 KB

race

#include <bits/stdc++.h>
#define fi first
#define se second
#define em emplace
#define eb emplace_back
#define sq(X) ((X)*(X))
#define all(V) (V).begin(), (V).end()
#define chk_init memset(chk, 0, sizeof(chk))
#define unq(V) (V).erase(unique(all(V)), (V).end())
using namespace std;
typedef long long ll;
typedef vector<ll> vlm;
typedef vector<int> vim;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
const int INF=(1<<30);
#include "race.h"

int N, K;
vector<pii> adj[200010];
int fin[200010], sz[200010], im, ans;
set<pii> S;
pii vis[200010]; int tp;

void subsz(int now, int par) {
	sz[now]=1;
	for (auto &i:adj[now]) if (i.fi!=par&&!fin[i.fi]) {
		subsz(i.fi, now);
		sz[now]+=sz[i.fi];
	}
}

int get_cent(int now, int par) {
	for (auto &i:adj[now]) if (i.fi!=par&&!fin[i.fi]&&sz[i.fi]>=im/2) return get_cent(i.fi, now);
	return now;
}

void visit(int now, int par, int d, int dep) {
	vis[tp++]=pii(d, dep);
	for (auto &i:adj[now]) if (i.fi!=par&&!fin[i.fi]) visit(i.fi, now, d+i.se, dep+1);
}

void dfs(int now) {
	subsz(now, 0); im=sz[now];
	int cent=get_cent(now, 0); fin[cent]=1;
	S.clear(); set<pii>::iterator it;
	for (auto &i:adj[cent]) if (!fin[i.fi]) {
		tp=0; visit(i.fi, cent, i.se, 1);
		for (int j=0; j<tp; j++) {
			it=S.lower_bound(pii(K-vis[j].fi, 0));
			if (it==S.end()||it->fi!=K-vis[j].fi) continue;
			ans=min(ans, it->se+vis[j].se);
		}
		for (int j=0; j<tp; j++) S.insert(vis[j]);
	}
	it=S.lower_bound(pii(K, 0));
	if (!(it==S.end()||it->fi!=K)) ans=min(ans, it->se);
	for (auto &i:adj[cent]) if (!fin[i.fi]) dfs(i.fi);
}

int best_path(int N_, int K_, int H[][2], int L[]) {
	N=N_; K=K_;
	for (int i=0; i<N-1; i++) adj[H[i][0]+1].eb(H[i][1]+1, L[i]), adj[H[i][1]+1].eb(H[i][0]+1, L[i]);
	ans=INF; dfs(1);
	return ans==INF?-1:ans;
}

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	4984 KB	Output is correct
2	Correct	8 ms	4984 KB	Output is correct
3	Correct	8 ms	4984 KB	Output is correct
4	Correct	8 ms	4984 KB	Output is correct
5	Correct	8 ms	4984 KB	Output is correct
6	Correct	8 ms	5112 KB	Output is correct
7	Correct	8 ms	5112 KB	Output is correct
8	Correct	8 ms	4984 KB	Output is correct
9	Correct	8 ms	4984 KB	Output is correct
10	Correct	8 ms	4984 KB	Output is correct
11	Correct	8 ms	5116 KB	Output is correct
12	Correct	8 ms	4984 KB	Output is correct
13	Correct	8 ms	4984 KB	Output is correct
14	Correct	9 ms	5112 KB	Output is correct
15	Correct	8 ms	4984 KB	Output is correct
16	Correct	8 ms	4984 KB	Output is correct
17	Correct	8 ms	4984 KB	Output is correct
18	Correct	8 ms	4984 KB	Output is correct

Subtask #2
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	4984 KB	Output is correct
2	Correct	8 ms	4984 KB	Output is correct
3	Correct	8 ms	4984 KB	Output is correct
4	Correct	8 ms	4984 KB	Output is correct
5	Correct	8 ms	4984 KB	Output is correct
6	Correct	8 ms	5112 KB	Output is correct
7	Correct	8 ms	5112 KB	Output is correct
8	Correct	8 ms	4984 KB	Output is correct
9	Correct	8 ms	4984 KB	Output is correct
10	Correct	8 ms	4984 KB	Output is correct
11	Correct	8 ms	5116 KB	Output is correct
12	Correct	8 ms	4984 KB	Output is correct
13	Correct	8 ms	4984 KB	Output is correct
14	Correct	9 ms	5112 KB	Output is correct
15	Correct	8 ms	4984 KB	Output is correct
16	Correct	8 ms	4984 KB	Output is correct
17	Correct	8 ms	4984 KB	Output is correct
18	Correct	8 ms	4984 KB	Output is correct
19	Correct	8 ms	5112 KB	Output is correct
20	Correct	8 ms	5112 KB	Output is correct
21	Correct	10 ms	5112 KB	Output is correct
22	Correct	10 ms	5112 KB	Output is correct
23	Correct	10 ms	5112 KB	Output is correct
24	Correct	9 ms	5112 KB	Output is correct
25	Correct	9 ms	5112 KB	Output is correct
26	Correct	9 ms	5112 KB	Output is correct
27	Correct	9 ms	5112 KB	Output is correct
28	Correct	10 ms	5240 KB	Output is correct
29	Correct	9 ms	5112 KB	Output is correct
30	Correct	11 ms	5240 KB	Output is correct
31	Correct	10 ms	5112 KB	Output is correct
32	Correct	9 ms	5112 KB	Output is correct
33	Correct	10 ms	5112 KB	Output is correct
34	Correct	10 ms	5112 KB	Output is correct
35	Correct	10 ms	5112 KB	Output is correct
36	Correct	9 ms	5112 KB	Output is correct
37	Correct	9 ms	5112 KB	Output is correct
38	Correct	9 ms	5112 KB	Output is correct

Subtask #3
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	4984 KB	Output is correct
2	Correct	8 ms	4984 KB	Output is correct
3	Correct	8 ms	4984 KB	Output is correct
4	Correct	8 ms	4984 KB	Output is correct
5	Correct	8 ms	4984 KB	Output is correct
6	Correct	8 ms	5112 KB	Output is correct
7	Correct	8 ms	5112 KB	Output is correct
8	Correct	8 ms	4984 KB	Output is correct
9	Correct	8 ms	4984 KB	Output is correct
10	Correct	8 ms	4984 KB	Output is correct
11	Correct	8 ms	5116 KB	Output is correct
12	Correct	8 ms	4984 KB	Output is correct
13	Correct	8 ms	4984 KB	Output is correct
14	Correct	9 ms	5112 KB	Output is correct
15	Correct	8 ms	4984 KB	Output is correct
16	Correct	8 ms	4984 KB	Output is correct
17	Correct	8 ms	4984 KB	Output is correct
18	Correct	8 ms	4984 KB	Output is correct
19	Correct	295 ms	11360 KB	Output is correct
20	Correct	282 ms	11896 KB	Output is correct
21	Correct	312 ms	12104 KB	Output is correct
22	Correct	244 ms	11896 KB	Output is correct
23	Correct	249 ms	12280 KB	Output is correct
24	Correct	142 ms	11848 KB	Output is correct
25	Correct	364 ms	19064 KB	Output is correct
26	Correct	249 ms	20472 KB	Output is correct
27	Correct	374 ms	19832 KB	Output is correct
28	Correct	1000 ms	35576 KB	Output is correct
29	Correct	999 ms	34808 KB	Output is correct
30	Correct	379 ms	19832 KB	Output is correct
31	Correct	369 ms	19700 KB	Output is correct
32	Correct	473 ms	19832 KB	Output is correct
33	Correct	539 ms	17016 KB	Output is correct
34	Correct	928 ms	26136 KB	Output is correct

Subtask #4
57.0 / 57.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	4984 KB	Output is correct
2	Correct	8 ms	4984 KB	Output is correct
3	Correct	8 ms	4984 KB	Output is correct
4	Correct	8 ms	4984 KB	Output is correct
5	Correct	8 ms	4984 KB	Output is correct
6	Correct	8 ms	5112 KB	Output is correct
7	Correct	8 ms	5112 KB	Output is correct
8	Correct	8 ms	4984 KB	Output is correct
9	Correct	8 ms	4984 KB	Output is correct
10	Correct	8 ms	4984 KB	Output is correct
11	Correct	8 ms	5116 KB	Output is correct
12	Correct	8 ms	4984 KB	Output is correct
13	Correct	8 ms	4984 KB	Output is correct
14	Correct	9 ms	5112 KB	Output is correct
15	Correct	8 ms	4984 KB	Output is correct
16	Correct	8 ms	4984 KB	Output is correct
17	Correct	8 ms	4984 KB	Output is correct
18	Correct	8 ms	4984 KB	Output is correct
19	Correct	8 ms	5112 KB	Output is correct
20	Correct	8 ms	5112 KB	Output is correct
21	Correct	10 ms	5112 KB	Output is correct
22	Correct	10 ms	5112 KB	Output is correct
23	Correct	10 ms	5112 KB	Output is correct
24	Correct	9 ms	5112 KB	Output is correct
25	Correct	9 ms	5112 KB	Output is correct
26	Correct	9 ms	5112 KB	Output is correct
27	Correct	9 ms	5112 KB	Output is correct
28	Correct	10 ms	5240 KB	Output is correct
29	Correct	9 ms	5112 KB	Output is correct
30	Correct	11 ms	5240 KB	Output is correct
31	Correct	10 ms	5112 KB	Output is correct
32	Correct	9 ms	5112 KB	Output is correct
33	Correct	10 ms	5112 KB	Output is correct
34	Correct	10 ms	5112 KB	Output is correct
35	Correct	10 ms	5112 KB	Output is correct
36	Correct	9 ms	5112 KB	Output is correct
37	Correct	9 ms	5112 KB	Output is correct
38	Correct	9 ms	5112 KB	Output is correct
39	Correct	295 ms	11360 KB	Output is correct
40	Correct	282 ms	11896 KB	Output is correct
41	Correct	312 ms	12104 KB	Output is correct
42	Correct	244 ms	11896 KB	Output is correct
43	Correct	249 ms	12280 KB	Output is correct
44	Correct	142 ms	11848 KB	Output is correct
45	Correct	364 ms	19064 KB	Output is correct
46	Correct	249 ms	20472 KB	Output is correct
47	Correct	374 ms	19832 KB	Output is correct
48	Correct	1000 ms	35576 KB	Output is correct
49	Correct	999 ms	34808 KB	Output is correct
50	Correct	379 ms	19832 KB	Output is correct
51	Correct	369 ms	19700 KB	Output is correct
52	Correct	473 ms	19832 KB	Output is correct
53	Correct	539 ms	17016 KB	Output is correct
54	Correct	928 ms	26136 KB	Output is correct
55	Correct	28 ms	6136 KB	Output is correct
56	Correct	23 ms	5752 KB	Output is correct
57	Correct	144 ms	11896 KB	Output is correct
58	Correct	57 ms	11628 KB	Output is correct
59	Correct	283 ms	20728 KB	Output is correct
60	Correct	1016 ms	35192 KB	Output is correct
61	Correct	427 ms	22904 KB	Output is correct
62	Correct	366 ms	19832 KB	Output is correct
63	Correct	462 ms	19832 KB	Output is correct
64	Correct	1172 ms	26524 KB	Output is correct
65	Correct	980 ms	27384 KB	Output is correct
66	Correct	1010 ms	33400 KB	Output is correct
67	Correct	168 ms	17636 KB	Output is correct
68	Correct	590 ms	27256 KB	Output is correct
69	Correct	605 ms	27768 KB	Output is correct
70	Correct	550 ms	26360 KB	Output is correct

답안 #199209

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