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답안 #541345

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
541345 2022-03-23T07:46:07 Z MohamedFaresNebili 경주 (Race) (IOI11_race) C++14
100 / 100
 908 ms 37104 KB 
#include <bits/stdc++.h>
#include "race.h"
/// #pragma GCC optimize ("Ofast")
/// #pragma GCC target ("avx2")

        using namespace std;

        using ll = long long;
        using ii = pair<ll, ll>;

        #define ff first
        #define ss second
        #define pb push_back

        const int oo = 1e9 + 7;

        int n, k;
        vector<ii> adj[200001];
        int sub[200001];

        int res = oo;
        int calc[1000001], mx;
        bool rem[200001];

        /// CENTROID DECOMPOSITION :

        int dfs_size(int v, int p) {
            sub[v] = 1;
            for(auto u : adj[v]) {
                if(u.ff == p || rem[u.ff]) continue;
                sub[v] += dfs_size(u.ff, v);
            }
            return sub[v];
        }
        int centroid(int v, int p, int _n) {
            for(auto u : adj[v]) {
                if(u.ff == p || rem[u.ff]) continue;
                if(sub[u.ff] >= _n)
                    return centroid(u.ff, v, _n);
            }
            return v;
        }
        void dfs(int v, int p, bool state, int curr, int len) {
            if(len > k) return;

            mx = max(mx, len);

            if(state) calc[len] = min(calc[len], curr);
            else res = min(res, curr + calc[k - len]);

            for(auto u : adj[v]) {
                if(u.ff == p || rem[u.ff]) continue;
                dfs(u.ff, v, state, curr + 1, len + u.ss);
            }
        }
        void build(int v = 0) {
            int _n = dfs_size(v, -1) >> 1;
            int c = centroid(v, -1, _n);
            rem[c] = 1; mx = 0;
            for(auto u : adj[c]) {
                if(rem[u.ff]) continue;
                dfs(u.ff, c, 0, 1, u.ss);
                dfs(u.ff, c, 1, 1, u.ss);
            }
            fill(calc + 1, calc + mx + 1, oo);
            for(auto u : adj[c]) {
                if(rem[u.ff]) continue;
                build(u.ff);
            }
        }

        int best_path(int N, int K, int H[][2], int L[]) {
            n = N, k = K;
            for(int l = 0; l < n - 1; l++) {
                int u = H[l][0], v = H[l][1], w = L[l];
                adj[u].pb({v, w}); adj[v].pb({u, w});
            }
            fill(calc + 1, calc + 1000001, oo);
            build();
            return (res != oo ? res : -1);
        }

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8916 KB Output is correct
2 Correct 5 ms 8844 KB Output is correct
3 Correct 5 ms 8916 KB Output is correct
4 Correct 5 ms 8844 KB Output is correct
5 Correct 5 ms 8916 KB Output is correct
6 Correct 5 ms 8916 KB Output is correct
7 Correct 5 ms 8916 KB Output is correct
8 Correct 4 ms 8916 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 5 ms 8840 KB Output is correct
11 Correct 5 ms 8916 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 5 ms 8916 KB Output is correct
14 Correct 5 ms 8916 KB Output is correct
15 Correct 5 ms 8916 KB Output is correct
16 Correct 5 ms 8916 KB Output is correct
17 Correct 5 ms 8916 KB Output is correct
18 Correct 5 ms 8916 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8916 KB Output is correct
2 Correct 5 ms 8844 KB Output is correct
3 Correct 5 ms 8916 KB Output is correct
4 Correct 5 ms 8844 KB Output is correct
5 Correct 5 ms 8916 KB Output is correct
6 Correct 5 ms 8916 KB Output is correct
7 Correct 5 ms 8916 KB Output is correct
8 Correct 4 ms 8916 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 5 ms 8840 KB Output is correct
11 Correct 5 ms 8916 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 5 ms 8916 KB Output is correct
14 Correct 5 ms 8916 KB Output is correct
15 Correct 5 ms 8916 KB Output is correct
16 Correct 5 ms 8916 KB Output is correct
17 Correct 5 ms 8916 KB Output is correct
18 Correct 5 ms 8916 KB Output is correct
19 Correct 5 ms 8916 KB Output is correct
20 Correct 5 ms 8916 KB Output is correct
21 Correct 5 ms 8916 KB Output is correct
22 Correct 116 ms 8900 KB Output is correct
23 Correct 82 ms 8996 KB Output is correct
24 Correct 114 ms 9008 KB Output is correct
25 Correct 20 ms 8916 KB Output is correct
26 Correct 44 ms 8988 KB Output is correct
27 Correct 5 ms 8916 KB Output is correct
28 Correct 18 ms 9024 KB Output is correct
29 Correct 19 ms 8988 KB Output is correct
30 Correct 19 ms 9020 KB Output is correct
31 Correct 19 ms 9020 KB Output is correct
32 Correct 19 ms 9016 KB Output is correct
33 Correct 27 ms 8992 KB Output is correct
34 Correct 25 ms 8916 KB Output is correct
35 Correct 30 ms 9020 KB Output is correct
36 Correct 30 ms 8984 KB Output is correct
37 Correct 10 ms 8916 KB Output is correct
38 Correct 9 ms 8976 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8916 KB Output is correct
2 Correct 5 ms 8844 KB Output is correct
3 Correct 5 ms 8916 KB Output is correct
4 Correct 5 ms 8844 KB Output is correct
5 Correct 5 ms 8916 KB Output is correct
6 Correct 5 ms 8916 KB Output is correct
7 Correct 5 ms 8916 KB Output is correct
8 Correct 4 ms 8916 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 5 ms 8840 KB Output is correct
11 Correct 5 ms 8916 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 5 ms 8916 KB Output is correct
14 Correct 5 ms 8916 KB Output is correct
15 Correct 5 ms 8916 KB Output is correct
16 Correct 5 ms 8916 KB Output is correct
17 Correct 5 ms 8916 KB Output is correct
18 Correct 5 ms 8916 KB Output is correct
19 Correct 122 ms 17032 KB Output is correct
20 Correct 119 ms 17032 KB Output is correct
21 Correct 136 ms 17044 KB Output is correct
22 Correct 131 ms 17024 KB Output is correct
23 Correct 69 ms 17464 KB Output is correct
24 Correct 58 ms 16716 KB Output is correct
25 Correct 118 ms 20000 KB Output is correct
26 Correct 83 ms 22860 KB Output is correct
27 Correct 155 ms 25788 KB Output is correct
28 Correct 246 ms 37104 KB Output is correct
29 Correct 251 ms 36252 KB Output is correct
30 Correct 160 ms 25872 KB Output is correct
31 Correct 164 ms 25792 KB Output is correct
32 Correct 184 ms 25992 KB Output is correct
33 Correct 194 ms 24620 KB Output is correct
34 Correct 177 ms 25548 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8916 KB Output is correct
2 Correct 5 ms 8844 KB Output is correct
3 Correct 5 ms 8916 KB Output is correct
4 Correct 5 ms 8844 KB Output is correct
5 Correct 5 ms 8916 KB Output is correct
6 Correct 5 ms 8916 KB Output is correct
7 Correct 5 ms 8916 KB Output is correct
8 Correct 4 ms 8916 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 5 ms 8840 KB Output is correct
11 Correct 5 ms 8916 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 5 ms 8916 KB Output is correct
14 Correct 5 ms 8916 KB Output is correct
15 Correct 5 ms 8916 KB Output is correct
16 Correct 5 ms 8916 KB Output is correct
17 Correct 5 ms 8916 KB Output is correct
18 Correct 5 ms 8916 KB Output is correct
19 Correct 5 ms 8916 KB Output is correct
20 Correct 5 ms 8916 KB Output is correct
21 Correct 5 ms 8916 KB Output is correct
22 Correct 116 ms 8900 KB Output is correct
23 Correct 82 ms 8996 KB Output is correct
24 Correct 114 ms 9008 KB Output is correct
25 Correct 20 ms 8916 KB Output is correct
26 Correct 44 ms 8988 KB Output is correct
27 Correct 5 ms 8916 KB Output is correct
28 Correct 18 ms 9024 KB Output is correct
29 Correct 19 ms 8988 KB Output is correct
30 Correct 19 ms 9020 KB Output is correct
31 Correct 19 ms 9020 KB Output is correct
32 Correct 19 ms 9016 KB Output is correct
33 Correct 27 ms 8992 KB Output is correct
34 Correct 25 ms 8916 KB Output is correct
35 Correct 30 ms 9020 KB Output is correct
36 Correct 30 ms 8984 KB Output is correct
37 Correct 10 ms 8916 KB Output is correct
38 Correct 9 ms 8976 KB Output is correct
39 Correct 122 ms 17032 KB Output is correct
40 Correct 119 ms 17032 KB Output is correct
41 Correct 136 ms 17044 KB Output is correct
42 Correct 131 ms 17024 KB Output is correct
43 Correct 69 ms 17464 KB Output is correct
44 Correct 58 ms 16716 KB Output is correct
45 Correct 118 ms 20000 KB Output is correct
46 Correct 83 ms 22860 KB Output is correct
47 Correct 155 ms 25788 KB Output is correct
48 Correct 246 ms 37104 KB Output is correct
49 Correct 251 ms 36252 KB Output is correct
50 Correct 160 ms 25872 KB Output is correct
51 Correct 164 ms 25792 KB Output is correct
52 Correct 184 ms 25992 KB Output is correct
53 Correct 194 ms 24620 KB Output is correct
54 Correct 177 ms 25548 KB Output is correct
55 Correct 15 ms 9748 KB Output is correct
56 Correct 14 ms 9732 KB Output is correct
57 Correct 64 ms 17484 KB Output is correct
58 Correct 40 ms 16328 KB Output is correct
59 Correct 109 ms 22792 KB Output is correct
60 Correct 415 ms 36444 KB Output is correct
61 Correct 174 ms 25928 KB Output is correct
62 Correct 179 ms 25956 KB Output is correct
63 Correct 229 ms 25932 KB Output is correct
64 Correct 908 ms 25872 KB Output is correct
65 Correct 208 ms 26284 KB Output is correct
66 Correct 571 ms 34496 KB Output is correct
67 Correct 103 ms 24996 KB Output is correct
68 Correct 310 ms 26132 KB Output is correct
69 Correct 322 ms 25932 KB Output is correct
70 Correct 308 ms 25292 KB Output is correct