Submission #870832

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
870832	2023-11-09T09:09:13 Z	NintsiChkhaidze	Race (IOI11_race)	C++17	100 / 100	833 ms	46008 KB

race

#include "race.h"
#include <bits/stdc++.h>
#define pb push_back
using namespace std;

const int NN = 2e5 + 5;
vector <pair <int,int> > v[NN];
int k,ans,vis[NN];
map <int,int> mp;

int findcentroid(int x,int par,int n,int &centroid){
	int s=1;
	for (auto [to,w]: v[x]){
		if (!vis[to] && to != par) 
			s += findcentroid(to,x,n,centroid);
	}
	
	if (centroid == -1 && (par == -1 || s*2 >= n)) centroid = x;
	return s;
}

void dfs(int x,int par,int dist,int dep,int type){
	
	if (dist == k){
		ans = min(ans,dep);
		return;
	}
	
	if (!type){
		if (mp.find(k - dist) != mp.end()){
			ans=min(ans,mp[k - dist] + dep);
		}
	}else{
		if (mp.find(dist) == mp.end()){
			mp[dist] = dep;
		}else{
			mp[dist] = min(mp[dist],dep);
		}
	}
	
	for (auto [to,w]: v[x]){
		if (!vis[to] && to != par) dfs(to,x,w + dist,dep + 1,type);
	}
}
void solve(int x,int n){
	int centroid = -1;
	findcentroid(x,-1,n,centroid);
	vis[centroid] = 1;
	mp.clear();
	
	for (auto [to,w]: v[centroid]){
		if (!vis[to]){
			dfs(to,x,w,1,0);
			dfs(to,x,w,1,1);
		}
	}
	
	for (auto [to,w]: v[centroid]){
		if (!vis[to]) solve(to,n/2);
	}
}
int best_path(int N, int K, int H[][2], int L[]){
    
  	for (int i = 0; i < N - 1; i++){
  		int a = H[i][0] + 1,b = H[i][1] + 1;
  		v[a].pb({b,L[i]});
  		v[b].pb({a,L[i]});
  	}
	k=K;
	ans=1e9;
	solve(1,N);
	if (ans == 1e9) ans=-1;
	return ans; 
}

Subtask #1
9.0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	9560 KB	Output is correct
2	Correct	2 ms	9560 KB	Output is correct
3	Correct	2 ms	9564 KB	Output is correct
4	Correct	2 ms	9564 KB	Output is correct
5	Correct	2 ms	9564 KB	Output is correct
6	Correct	2 ms	9816 KB	Output is correct
7	Correct	2 ms	9564 KB	Output is correct
8	Correct	2 ms	9564 KB	Output is correct
9	Correct	2 ms	9564 KB	Output is correct
10	Correct	2 ms	9564 KB	Output is correct
11	Correct	2 ms	9564 KB	Output is correct
12	Correct	2 ms	9564 KB	Output is correct
13	Correct	2 ms	9568 KB	Output is correct
14	Correct	2 ms	9564 KB	Output is correct
15	Correct	2 ms	9564 KB	Output is correct
16	Correct	2 ms	9564 KB	Output is correct
17	Correct	2 ms	9564 KB	Output is correct
18	Correct	2 ms	9564 KB	Output is correct

Subtask #2
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	9560 KB	Output is correct
2	Correct	2 ms	9560 KB	Output is correct
3	Correct	2 ms	9564 KB	Output is correct
4	Correct	2 ms	9564 KB	Output is correct
5	Correct	2 ms	9564 KB	Output is correct
6	Correct	2 ms	9816 KB	Output is correct
7	Correct	2 ms	9564 KB	Output is correct
8	Correct	2 ms	9564 KB	Output is correct
9	Correct	2 ms	9564 KB	Output is correct
10	Correct	2 ms	9564 KB	Output is correct
11	Correct	2 ms	9564 KB	Output is correct
12	Correct	2 ms	9564 KB	Output is correct
13	Correct	2 ms	9568 KB	Output is correct
14	Correct	2 ms	9564 KB	Output is correct
15	Correct	2 ms	9564 KB	Output is correct
16	Correct	2 ms	9564 KB	Output is correct
17	Correct	2 ms	9564 KB	Output is correct
18	Correct	2 ms	9564 KB	Output is correct
19	Correct	2 ms	9564 KB	Output is correct
20	Correct	2 ms	9564 KB	Output is correct
21	Correct	3 ms	9564 KB	Output is correct
22	Correct	3 ms	9560 KB	Output is correct
23	Correct	3 ms	9564 KB	Output is correct
24	Correct	3 ms	9564 KB	Output is correct
25	Correct	3 ms	9560 KB	Output is correct
26	Correct	3 ms	9564 KB	Output is correct
27	Correct	2 ms	9564 KB	Output is correct
28	Correct	3 ms	9644 KB	Output is correct
29	Correct	3 ms	9564 KB	Output is correct
30	Correct	3 ms	9564 KB	Output is correct
31	Correct	3 ms	9564 KB	Output is correct
32	Correct	3 ms	9564 KB	Output is correct
33	Correct	4 ms	9564 KB	Output is correct
34	Correct	3 ms	9564 KB	Output is correct
35	Correct	3 ms	9564 KB	Output is correct
36	Correct	3 ms	9564 KB	Output is correct
37	Correct	3 ms	9564 KB	Output is correct
38	Correct	3 ms	9560 KB	Output is correct

Subtask #3
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	9560 KB	Output is correct
2	Correct	2 ms	9560 KB	Output is correct
3	Correct	2 ms	9564 KB	Output is correct
4	Correct	2 ms	9564 KB	Output is correct
5	Correct	2 ms	9564 KB	Output is correct
6	Correct	2 ms	9816 KB	Output is correct
7	Correct	2 ms	9564 KB	Output is correct
8	Correct	2 ms	9564 KB	Output is correct
9	Correct	2 ms	9564 KB	Output is correct
10	Correct	2 ms	9564 KB	Output is correct
11	Correct	2 ms	9564 KB	Output is correct
12	Correct	2 ms	9564 KB	Output is correct
13	Correct	2 ms	9568 KB	Output is correct
14	Correct	2 ms	9564 KB	Output is correct
15	Correct	2 ms	9564 KB	Output is correct
16	Correct	2 ms	9564 KB	Output is correct
17	Correct	2 ms	9564 KB	Output is correct
18	Correct	2 ms	9564 KB	Output is correct
19	Correct	200 ms	15188 KB	Output is correct
20	Correct	206 ms	15428 KB	Output is correct
21	Correct	197 ms	15440 KB	Output is correct
22	Correct	154 ms	15444 KB	Output is correct
23	Correct	213 ms	15716 KB	Output is correct
24	Correct	96 ms	15448 KB	Output is correct
25	Correct	87 ms	19024 KB	Output is correct
26	Correct	75 ms	22608 KB	Output is correct
27	Correct	301 ms	19508 KB	Output is correct
28	Correct	569 ms	46008 KB	Output is correct
29	Correct	559 ms	44884 KB	Output is correct
30	Correct	291 ms	22356 KB	Output is correct
31	Correct	314 ms	22420 KB	Output is correct
32	Correct	377 ms	22356 KB	Output is correct
33	Correct	172 ms	20972 KB	Output is correct
34	Correct	596 ms	31324 KB	Output is correct

Subtask #4
57.0 / 57.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	9560 KB	Output is correct
2	Correct	2 ms	9560 KB	Output is correct
3	Correct	2 ms	9564 KB	Output is correct
4	Correct	2 ms	9564 KB	Output is correct
5	Correct	2 ms	9564 KB	Output is correct
6	Correct	2 ms	9816 KB	Output is correct
7	Correct	2 ms	9564 KB	Output is correct
8	Correct	2 ms	9564 KB	Output is correct
9	Correct	2 ms	9564 KB	Output is correct
10	Correct	2 ms	9564 KB	Output is correct
11	Correct	2 ms	9564 KB	Output is correct
12	Correct	2 ms	9564 KB	Output is correct
13	Correct	2 ms	9568 KB	Output is correct
14	Correct	2 ms	9564 KB	Output is correct
15	Correct	2 ms	9564 KB	Output is correct
16	Correct	2 ms	9564 KB	Output is correct
17	Correct	2 ms	9564 KB	Output is correct
18	Correct	2 ms	9564 KB	Output is correct
19	Correct	2 ms	9564 KB	Output is correct
20	Correct	2 ms	9564 KB	Output is correct
21	Correct	3 ms	9564 KB	Output is correct
22	Correct	3 ms	9560 KB	Output is correct
23	Correct	3 ms	9564 KB	Output is correct
24	Correct	3 ms	9564 KB	Output is correct
25	Correct	3 ms	9560 KB	Output is correct
26	Correct	3 ms	9564 KB	Output is correct
27	Correct	2 ms	9564 KB	Output is correct
28	Correct	3 ms	9644 KB	Output is correct
29	Correct	3 ms	9564 KB	Output is correct
30	Correct	3 ms	9564 KB	Output is correct
31	Correct	3 ms	9564 KB	Output is correct
32	Correct	3 ms	9564 KB	Output is correct
33	Correct	4 ms	9564 KB	Output is correct
34	Correct	3 ms	9564 KB	Output is correct
35	Correct	3 ms	9564 KB	Output is correct
36	Correct	3 ms	9564 KB	Output is correct
37	Correct	3 ms	9564 KB	Output is correct
38	Correct	3 ms	9560 KB	Output is correct
39	Correct	200 ms	15188 KB	Output is correct
40	Correct	206 ms	15428 KB	Output is correct
41	Correct	197 ms	15440 KB	Output is correct
42	Correct	154 ms	15444 KB	Output is correct
43	Correct	213 ms	15716 KB	Output is correct
44	Correct	96 ms	15448 KB	Output is correct
45	Correct	87 ms	19024 KB	Output is correct
46	Correct	75 ms	22608 KB	Output is correct
47	Correct	301 ms	19508 KB	Output is correct
48	Correct	569 ms	46008 KB	Output is correct
49	Correct	559 ms	44884 KB	Output is correct
50	Correct	291 ms	22356 KB	Output is correct
51	Correct	314 ms	22420 KB	Output is correct
52	Correct	377 ms	22356 KB	Output is correct
53	Correct	172 ms	20972 KB	Output is correct
54	Correct	596 ms	31324 KB	Output is correct
55	Correct	18 ms	10332 KB	Output is correct
56	Correct	13 ms	10076 KB	Output is correct
57	Correct	115 ms	17012 KB	Output is correct
58	Correct	36 ms	16592 KB	Output is correct
59	Correct	212 ms	27476 KB	Output is correct
60	Correct	565 ms	44620 KB	Output is correct
61	Correct	406 ms	23832 KB	Output is correct
62	Correct	334 ms	22608 KB	Output is correct
63	Correct	345 ms	22384 KB	Output is correct
64	Correct	833 ms	27224 KB	Output is correct
65	Correct	693 ms	32340 KB	Output is correct
66	Correct	599 ms	42484 KB	Output is correct
67	Correct	82 ms	22928 KB	Output is correct
68	Correct	532 ms	27472 KB	Output is correct
69	Correct	519 ms	27220 KB	Output is correct
70	Correct	483 ms	26592 KB	Output is correct

Submission #870832

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