답안 #748591

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
748591	2023-05-26T14:42:26 Z	ZeroCool	경주 (Race) (IOI11_race)	C++17	100 / 100	397 ms	108108 KB

race

#include "race.h"
#include <bits/stdc++.h>
#define ll long long


const int mxn = 200005;
const int inf = 1e9;

using namespace std;
set<pair<ll,int> > s[mxn];
vector<pair<int,int> > g[mxn];

int n,k;

int ans;

void dfs(int x,int p,ll dis,int dep){
	s[x].insert({dis,dep});
	for(auto par : g[x]){
		int y = par.first;
		int z = par.second;
		if(y == p)continue;

		dfs(y,x,dis+z,dep+1);

		if(s[x].size() < s[y].size())swap(s[x],s[y]);

		for(auto par2 : s[y]){
			int len= par2.first;
			int cnt = par2.second;

			ll q = k - len + 2*dis;

			auto it = s[x].lower_bound({q,0});

			if(it != s[x].end() && (*it).first == q){
				ans = min(ans, (*it).second + cnt - 2 * dep);
			}
		}
		s[x].insert(s[y].begin(),s[y].end());
	}
}


int best_path(int _n, int _k, int H[][2], int L[]){
	n = _n;
	k = _k;
	//vector<vector<pair<int, int>>> g(n);
    for (int i = 0; i < n - 1; i++) {
        g[H[i][0]].push_back({H[i][1], L[i]});
        g[H[i][1]].push_back({H[i][0], L[i]});
    }
    ans = n;

    //vector<set<pair<ll, int>>> s(n);

    // auto dfs = [&](auto dfs, int x, int p, ll dis, int dep) -> void {
    //     //s[x].emplace(dis, dep);
	// 	s[x].insert({dis,dep});
    //     for (auto [y,z] : g[x]) {
	// 		if (y == p) continue;
            
    //         dfs(dfs, y, x, dis + z, dep + 1);

    //         if (s[x].size() < s[y].size()) {
    //             swap(s[x], s[y]);
    //         }

    //         for (auto [len, cnt] : s[y]) {
    //             ll q = k - len + 2 * dis;
    //             auto it = s[x].lower_bound({q, 0});
    //             if (it != s[x].end() && (*it).first == q) {
    //                 ans = min(ans, (*it).second + cnt - 2 * dep);
    //             }
    //         }
    //         s[x].insert(s[y].begin(), s[y].end());
    //     }
    // };
    dfs( 0, -1, 0, 0);
    if (ans == n) {
        ans = -1;
    }
    return ans;

}	
//Pls work

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	14404 KB	Output is correct
3	Correct	9 ms	14376 KB	Output is correct
4	Correct	7 ms	14400 KB	Output is correct
5	Correct	7 ms	14420 KB	Output is correct
6	Correct	8 ms	14420 KB	Output is correct
7	Correct	8 ms	14420 KB	Output is correct
8	Correct	8 ms	14400 KB	Output is correct
9	Correct	8 ms	14420 KB	Output is correct
10	Correct	7 ms	14420 KB	Output is correct
11	Correct	8 ms	14420 KB	Output is correct
12	Correct	8 ms	14396 KB	Output is correct
13	Correct	7 ms	14404 KB	Output is correct
14	Correct	7 ms	14400 KB	Output is correct
15	Correct	8 ms	14324 KB	Output is correct
16	Correct	8 ms	14420 KB	Output is correct
17	Correct	8 ms	14420 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	14404 KB	Output is correct
3	Correct	9 ms	14376 KB	Output is correct
4	Correct	7 ms	14400 KB	Output is correct
5	Correct	7 ms	14420 KB	Output is correct
6	Correct	8 ms	14420 KB	Output is correct
7	Correct	8 ms	14420 KB	Output is correct
8	Correct	8 ms	14400 KB	Output is correct
9	Correct	8 ms	14420 KB	Output is correct
10	Correct	7 ms	14420 KB	Output is correct
11	Correct	8 ms	14420 KB	Output is correct
12	Correct	8 ms	14396 KB	Output is correct
13	Correct	7 ms	14404 KB	Output is correct
14	Correct	7 ms	14400 KB	Output is correct
15	Correct	8 ms	14324 KB	Output is correct
16	Correct	8 ms	14420 KB	Output is correct
17	Correct	8 ms	14420 KB	Output is correct
18	Correct	7 ms	14420 KB	Output is correct
19	Correct	8 ms	14400 KB	Output is correct
20	Correct	7 ms	14420 KB	Output is correct
21	Correct	9 ms	14660 KB	Output is correct
22	Correct	9 ms	14676 KB	Output is correct
23	Correct	11 ms	14664 KB	Output is correct
24	Correct	8 ms	14628 KB	Output is correct
25	Correct	9 ms	14592 KB	Output is correct
26	Correct	8 ms	14676 KB	Output is correct
27	Correct	8 ms	14536 KB	Output is correct
28	Correct	8 ms	14620 KB	Output is correct
29	Correct	9 ms	14676 KB	Output is correct
30	Correct	9 ms	14676 KB	Output is correct
31	Correct	8 ms	14676 KB	Output is correct
32	Correct	8 ms	14676 KB	Output is correct
33	Correct	11 ms	14668 KB	Output is correct
34	Correct	8 ms	14548 KB	Output is correct
35	Correct	8 ms	14548 KB	Output is correct
36	Correct	8 ms	14540 KB	Output is correct
37	Correct	8 ms	14532 KB	Output is correct
38	Correct	8 ms	14644 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	14404 KB	Output is correct
3	Correct	9 ms	14376 KB	Output is correct
4	Correct	7 ms	14400 KB	Output is correct
5	Correct	7 ms	14420 KB	Output is correct
6	Correct	8 ms	14420 KB	Output is correct
7	Correct	8 ms	14420 KB	Output is correct
8	Correct	8 ms	14400 KB	Output is correct
9	Correct	8 ms	14420 KB	Output is correct
10	Correct	7 ms	14420 KB	Output is correct
11	Correct	8 ms	14420 KB	Output is correct
12	Correct	8 ms	14396 KB	Output is correct
13	Correct	7 ms	14404 KB	Output is correct
14	Correct	7 ms	14400 KB	Output is correct
15	Correct	8 ms	14324 KB	Output is correct
16	Correct	8 ms	14420 KB	Output is correct
17	Correct	8 ms	14420 KB	Output is correct
18	Correct	7 ms	14420 KB	Output is correct
19	Correct	132 ms	41016 KB	Output is correct
20	Correct	131 ms	40912 KB	Output is correct
21	Correct	135 ms	40284 KB	Output is correct
22	Correct	134 ms	39036 KB	Output is correct
23	Correct	161 ms	53356 KB	Output is correct
24	Correct	123 ms	39988 KB	Output is correct
25	Correct	119 ms	43724 KB	Output is correct
26	Correct	85 ms	48204 KB	Output is correct
27	Correct	186 ms	49400 KB	Output is correct
28	Correct	271 ms	82292 KB	Output is correct
29	Correct	249 ms	80924 KB	Output is correct
30	Correct	188 ms	49412 KB	Output is correct
31	Correct	188 ms	49224 KB	Output is correct
32	Correct	239 ms	49596 KB	Output is correct
33	Correct	203 ms	51144 KB	Output is correct
34	Correct	297 ms	84144 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	14404 KB	Output is correct
3	Correct	9 ms	14376 KB	Output is correct
4	Correct	7 ms	14400 KB	Output is correct
5	Correct	7 ms	14420 KB	Output is correct
6	Correct	8 ms	14420 KB	Output is correct
7	Correct	8 ms	14420 KB	Output is correct
8	Correct	8 ms	14400 KB	Output is correct
9	Correct	8 ms	14420 KB	Output is correct
10	Correct	7 ms	14420 KB	Output is correct
11	Correct	8 ms	14420 KB	Output is correct
12	Correct	8 ms	14396 KB	Output is correct
13	Correct	7 ms	14404 KB	Output is correct
14	Correct	7 ms	14400 KB	Output is correct
15	Correct	8 ms	14324 KB	Output is correct
16	Correct	8 ms	14420 KB	Output is correct
17	Correct	8 ms	14420 KB	Output is correct
18	Correct	7 ms	14420 KB	Output is correct
19	Correct	8 ms	14400 KB	Output is correct
20	Correct	7 ms	14420 KB	Output is correct
21	Correct	9 ms	14660 KB	Output is correct
22	Correct	9 ms	14676 KB	Output is correct
23	Correct	11 ms	14664 KB	Output is correct
24	Correct	8 ms	14628 KB	Output is correct
25	Correct	9 ms	14592 KB	Output is correct
26	Correct	8 ms	14676 KB	Output is correct
27	Correct	8 ms	14536 KB	Output is correct
28	Correct	8 ms	14620 KB	Output is correct
29	Correct	9 ms	14676 KB	Output is correct
30	Correct	9 ms	14676 KB	Output is correct
31	Correct	8 ms	14676 KB	Output is correct
32	Correct	8 ms	14676 KB	Output is correct
33	Correct	11 ms	14668 KB	Output is correct
34	Correct	8 ms	14548 KB	Output is correct
35	Correct	8 ms	14548 KB	Output is correct
36	Correct	8 ms	14540 KB	Output is correct
37	Correct	8 ms	14532 KB	Output is correct
38	Correct	8 ms	14644 KB	Output is correct
39	Correct	132 ms	41016 KB	Output is correct
40	Correct	131 ms	40912 KB	Output is correct
41	Correct	135 ms	40284 KB	Output is correct
42	Correct	134 ms	39036 KB	Output is correct
43	Correct	161 ms	53356 KB	Output is correct
44	Correct	123 ms	39988 KB	Output is correct
45	Correct	119 ms	43724 KB	Output is correct
46	Correct	85 ms	48204 KB	Output is correct
47	Correct	186 ms	49400 KB	Output is correct
48	Correct	271 ms	82292 KB	Output is correct
49	Correct	249 ms	80924 KB	Output is correct
50	Correct	188 ms	49412 KB	Output is correct
51	Correct	188 ms	49224 KB	Output is correct
52	Correct	239 ms	49596 KB	Output is correct
53	Correct	203 ms	51144 KB	Output is correct
54	Correct	297 ms	84144 KB	Output is correct
55	Correct	20 ms	17828 KB	Output is correct
56	Correct	15 ms	16452 KB	Output is correct
57	Correct	85 ms	35660 KB	Output is correct
58	Correct	50 ms	26724 KB	Output is correct
59	Correct	80 ms	48132 KB	Output is correct
60	Correct	266 ms	81488 KB	Output is correct
61	Correct	239 ms	55228 KB	Output is correct
62	Correct	197 ms	49408 KB	Output is correct
63	Correct	231 ms	49476 KB	Output is correct
64	Correct	391 ms	108108 KB	Output is correct
65	Correct	397 ms	99840 KB	Output is correct
66	Correct	255 ms	77984 KB	Output is correct
67	Correct	156 ms	40724 KB	Output is correct
68	Correct	309 ms	64992 KB	Output is correct
69	Correct	324 ms	70608 KB	Output is correct
70	Correct	292 ms	63012 KB	Output is correct

답안 #748591

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