답안 #1005610

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1005610	2024-06-22T16:07:14 Z	nikd	경주 (Race) (IOI11_race)	C++17	100 / 100	863 ms	45816 KB

race

// https://oj.uz/problem/view/IOI11_race
#include <bits/stdc++.h>
#define ll long long
using namespace std;



vector<vector<pair<int, int>>> adj;
int n, k;
vector<bool> is_rem;
vector<int> sz;
vector<ll> distL; //ll
vector<int> dist;
map<int, int> buf_k_dist;
map<int, int> k_dist;
int sol;



void get_sz(int v, int e){
    sz[v]=1;
    for(auto edge: adj[v]){
        int u = edge.first;
        if(u==e||is_rem[u]) continue;
        get_sz(u, v); sz[v] += sz[u];
    }
    
    return;
}

void get_dist(int v, int e){
    if(distL[v]<=k){
        if(buf_k_dist.count(distL[v])==0) buf_k_dist[distL[v]] = dist[v];
        else if(buf_k_dist[distL[v]] > dist[v]) buf_k_dist[distL[v]] = dist[v];
    }
    for(auto edge: adj[v]){
        int u = edge.first;
        if(u==e||is_rem[u]) continue;
        dist[u]=dist[v]+1;
        distL[u]=distL[v]+edge.second;
        get_dist(u, v);
    }
    return;
}


int find_centr(int v, int e, int siz){
    for(auto edge: adj[v]){
        int u = edge.first;
        if(u==e||is_rem[u]) continue;
        if(sz[u] > siz/2) return find_centr(u, v, siz);
    }
    return v;
}

void decompose(int v, int siz){
    get_sz(v, v);
    int c = find_centr(v, v, siz);
    dist[c]=0; distL[c]=0;

    
    k_dist[0]=0;
    for(auto edge: adj[c]){
        int u = edge.first;
        if(is_rem[u]) continue;
        dist[u]=1;
        distL[u] = edge.second;
        get_dist(u, c);
        for(auto [key, val] : buf_k_dist){
            if(k_dist.count(k-key)!=0){
                sol = min(sol, val+ k_dist[k-key]);
            }
        }
        for(auto [key, val] : buf_k_dist){
            if(k_dist.count(key)!=0){
                k_dist[key] = min(k_dist[key], val);
            }
            else k_dist[key] = val;
        }
        buf_k_dist.clear();
    }

    
    k_dist.clear();

    get_sz(c, c);


    is_rem[c]=1;
    for(auto edge: adj[c]){
        int u = edge.first;
        if(is_rem[u]) continue;
        decompose(u, sz[u]);
    }
}


int best_path(int N, int K, int H[][2], int L[]){
    n = N; k = K;
    adj.resize(N);
    sz.resize(n);
    is_rem.resize(n, 0);
    distL.resize(n);
    dist.resize(n);

    sol = INT_MAX;
    for(int i = 0; i<n-1; i++){
        adj[H[i][0]].push_back({H[i][1], L[i]});
        adj[H[i][1]].push_back({H[i][0], L[i]});
    }
    decompose(0, n);

    return (sol==INT_MAX ? -1 : sol);

}

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	0 ms	2396 KB	Output is correct
5	Correct	0 ms	2396 KB	Output is correct
6	Correct	0 ms	2396 KB	Output is correct
7	Correct	0 ms	2396 KB	Output is correct
8	Correct	0 ms	2492 KB	Output is correct
9	Correct	0 ms	2396 KB	Output is correct
10	Correct	0 ms	2396 KB	Output is correct
11	Correct	0 ms	2396 KB	Output is correct
12	Correct	0 ms	2396 KB	Output is correct
13	Correct	0 ms	2396 KB	Output is correct
14	Correct	0 ms	2396 KB	Output is correct
15	Correct	0 ms	2396 KB	Output is correct
16	Correct	0 ms	2396 KB	Output is correct
17	Correct	0 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct

Subtask #2
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	0 ms	2396 KB	Output is correct
5	Correct	0 ms	2396 KB	Output is correct
6	Correct	0 ms	2396 KB	Output is correct
7	Correct	0 ms	2396 KB	Output is correct
8	Correct	0 ms	2492 KB	Output is correct
9	Correct	0 ms	2396 KB	Output is correct
10	Correct	0 ms	2396 KB	Output is correct
11	Correct	0 ms	2396 KB	Output is correct
12	Correct	0 ms	2396 KB	Output is correct
13	Correct	0 ms	2396 KB	Output is correct
14	Correct	0 ms	2396 KB	Output is correct
15	Correct	0 ms	2396 KB	Output is correct
16	Correct	0 ms	2396 KB	Output is correct
17	Correct	0 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2392 KB	Output is correct
20	Correct	0 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2396 KB	Output is correct
24	Correct	1 ms	2396 KB	Output is correct
25	Correct	2 ms	2396 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2396 KB	Output is correct
28	Correct	1 ms	2396 KB	Output is correct
29	Correct	2 ms	2396 KB	Output is correct
30	Correct	2 ms	2396 KB	Output is correct
31	Correct	2 ms	2396 KB	Output is correct
32	Correct	2 ms	2396 KB	Output is correct
33	Correct	2 ms	2492 KB	Output is correct
34	Correct	1 ms	2396 KB	Output is correct
35	Correct	1 ms	2396 KB	Output is correct
36	Correct	1 ms	2396 KB	Output is correct
37	Correct	2 ms	2396 KB	Output is correct
38	Correct	2 ms	2396 KB	Output is correct

Subtask #3
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	0 ms	2396 KB	Output is correct
5	Correct	0 ms	2396 KB	Output is correct
6	Correct	0 ms	2396 KB	Output is correct
7	Correct	0 ms	2396 KB	Output is correct
8	Correct	0 ms	2492 KB	Output is correct
9	Correct	0 ms	2396 KB	Output is correct
10	Correct	0 ms	2396 KB	Output is correct
11	Correct	0 ms	2396 KB	Output is correct
12	Correct	0 ms	2396 KB	Output is correct
13	Correct	0 ms	2396 KB	Output is correct
14	Correct	0 ms	2396 KB	Output is correct
15	Correct	0 ms	2396 KB	Output is correct
16	Correct	0 ms	2396 KB	Output is correct
17	Correct	0 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	166 ms	12428 KB	Output is correct
20	Correct	174 ms	13244 KB	Output is correct
21	Correct	161 ms	12880 KB	Output is correct
22	Correct	133 ms	13728 KB	Output is correct
23	Correct	84 ms	13916 KB	Output is correct
24	Correct	58 ms	13660 KB	Output is correct
25	Correct	108 ms	18436 KB	Output is correct
26	Correct	59 ms	18772 KB	Output is correct
27	Correct	144 ms	21444 KB	Output is correct
28	Correct	231 ms	32812 KB	Output is correct
29	Correct	273 ms	32004 KB	Output is correct
30	Correct	165 ms	22344 KB	Output is correct
31	Correct	157 ms	22040 KB	Output is correct
32	Correct	228 ms	22056 KB	Output is correct
33	Correct	261 ms	21052 KB	Output is correct
34	Correct	189 ms	21332 KB	Output is correct

Subtask #4
57.0 / 57.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	0 ms	2396 KB	Output is correct
5	Correct	0 ms	2396 KB	Output is correct
6	Correct	0 ms	2396 KB	Output is correct
7	Correct	0 ms	2396 KB	Output is correct
8	Correct	0 ms	2492 KB	Output is correct
9	Correct	0 ms	2396 KB	Output is correct
10	Correct	0 ms	2396 KB	Output is correct
11	Correct	0 ms	2396 KB	Output is correct
12	Correct	0 ms	2396 KB	Output is correct
13	Correct	0 ms	2396 KB	Output is correct
14	Correct	0 ms	2396 KB	Output is correct
15	Correct	0 ms	2396 KB	Output is correct
16	Correct	0 ms	2396 KB	Output is correct
17	Correct	0 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2392 KB	Output is correct
20	Correct	0 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2396 KB	Output is correct
24	Correct	1 ms	2396 KB	Output is correct
25	Correct	2 ms	2396 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2396 KB	Output is correct
28	Correct	1 ms	2396 KB	Output is correct
29	Correct	2 ms	2396 KB	Output is correct
30	Correct	2 ms	2396 KB	Output is correct
31	Correct	2 ms	2396 KB	Output is correct
32	Correct	2 ms	2396 KB	Output is correct
33	Correct	2 ms	2492 KB	Output is correct
34	Correct	1 ms	2396 KB	Output is correct
35	Correct	1 ms	2396 KB	Output is correct
36	Correct	1 ms	2396 KB	Output is correct
37	Correct	2 ms	2396 KB	Output is correct
38	Correct	2 ms	2396 KB	Output is correct
39	Correct	166 ms	12428 KB	Output is correct
40	Correct	174 ms	13244 KB	Output is correct
41	Correct	161 ms	12880 KB	Output is correct
42	Correct	133 ms	13728 KB	Output is correct
43	Correct	84 ms	13916 KB	Output is correct
44	Correct	58 ms	13660 KB	Output is correct
45	Correct	108 ms	18436 KB	Output is correct
46	Correct	59 ms	18772 KB	Output is correct
47	Correct	144 ms	21444 KB	Output is correct
48	Correct	231 ms	32812 KB	Output is correct
49	Correct	273 ms	32004 KB	Output is correct
50	Correct	165 ms	22344 KB	Output is correct
51	Correct	157 ms	22040 KB	Output is correct
52	Correct	228 ms	22056 KB	Output is correct
53	Correct	261 ms	21052 KB	Output is correct
54	Correct	189 ms	21332 KB	Output is correct
55	Correct	18 ms	3416 KB	Output is correct
56	Correct	11 ms	3160 KB	Output is correct
57	Correct	93 ms	12584 KB	Output is correct
58	Correct	32 ms	13520 KB	Output is correct
59	Correct	315 ms	24512 KB	Output is correct
60	Correct	836 ms	45816 KB	Output is correct
61	Correct	226 ms	21584 KB	Output is correct
62	Correct	239 ms	22100 KB	Output is correct
63	Correct	319 ms	22100 KB	Output is correct
64	Correct	863 ms	27340 KB	Output is correct
65	Correct	195 ms	22840 KB	Output is correct
66	Correct	554 ms	30032 KB	Output is correct
67	Correct	94 ms	23496 KB	Output is correct
68	Correct	338 ms	25864 KB	Output is correct
69	Correct	359 ms	24144 KB	Output is correct
70	Correct	300 ms	25088 KB	Output is correct

답안 #1005610

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