oj.uz

답안 #446060

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
446060 2021-07-20T15:48:03 Z MladenP 경주 (Race) (IOI11_race) C++17
100 / 100
 458 ms 35448 KB 
#include "race.h"
#include <bits/stdc++.h>
#define PRINT(x) cerr<<#x<<'='<<x<<endl;
#define NL(x) " \n"[(x)]
#define lld long long
#define pil pair<int,lld>
#define pli pair<lld,int>
#define pll pair<lld,lld>
#define pii pair<int,int>
#define pb push_back
#define fi first
#define se second
#define mid (l+r)/2
#define endl '\n'
#define all(a) begin(a),end(a)
#define sz(a) int((a).size())
#define LINF 1000000000000000LL
#define INF 1000000000
#define EPS 1e-9
using namespace std;
#define MAXN 200010
#define MAXK 1000010
vector<pii> adj[MAXN];
int N, K, siz[MAXN], res, b[MAXK];
bool vis[MAXN];

int dfsSize(int node, int prev) {
    siz[node] = 1;
    for(auto x : adj[node]) {
        if(x.fi != prev && !vis[x.fi]) siz[node] += dfsSize(x.fi, node);
    }
    return siz[node];
}
int dfsCentroid(int node, int prev, int S) {
    for(auto x : adj[node]) {
        if(x.fi != prev && !vis[x.fi] && siz[x.fi] > S/2) return dfsCentroid(x.fi, node, S);
    }
    return node;
}

vector<int> v;
vector<pii> vt;
void dfsSolve(int node, int prev, int len, int dub) {
    vt.pb({dub, len});
    v.pb(len);
    res = min(res, b[K-len]+dub);
    for(auto x : adj[node]) {
        if(x.fi != prev && !vis[x.fi] && len+x.se <= K) dfsSolve(x.fi, node, len+x.se, dub+1);
    }
}

void centroidDecomp(int node) {
    int S = dfsSize(node, node);
    node = dfsCentroid(node, node, S);
    vis[node] = 1;
    for(auto x : adj[node]) {
        if(!vis[x.fi] && x.se <= K) dfsSolve(x.fi, node, x.se, 1);
        for(auto y : vt) {
            b[y.se] = min(b[y.se], y.fi);
        }
        res = min(res, b[K]);
        vt.clear();
    }
    for(auto x : v) b[x] = N;
    v.clear();
    for(auto x : adj[node]) if(!vis[x.fi]) centroidDecomp(x.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].pb({H[i][1]+1, L[i]});
        adj[H[i][1]+1].pb({H[i][0]+1, L[i]});
    }
    res = N;
    for(int i = 0; i <= K; i++) b[i] = N;
    centroidDecomp(1);
    return (res == N ? -1:res);
}
/*
4 3
0 1 1
1 2 2
1 3 4
2

3 3
0 1 1
1 2 1
-1

11 12
0 1 3
0 2 4
2 3 5
3 4 4
4 5 6
0 6 3
6 7 2
6 8 5
8 9 6
8 10 7
2

*/

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 5016 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 3 ms 4940 KB Output is correct
7 Correct 3 ms 5020 KB Output is correct
8 Correct 3 ms 5008 KB Output is correct
9 Correct 4 ms 4940 KB Output is correct
10 Correct 4 ms 4940 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 3 ms 4940 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 4940 KB Output is correct
16 Correct 3 ms 5008 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 5016 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 3 ms 4940 KB Output is correct
7 Correct 3 ms 5020 KB Output is correct
8 Correct 3 ms 5008 KB Output is correct
9 Correct 4 ms 4940 KB Output is correct
10 Correct 4 ms 4940 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 3 ms 4940 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 4940 KB Output is correct
16 Correct 3 ms 5008 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 4 ms 5012 KB Output is correct
22 Correct 6 ms 8652 KB Output is correct
23 Correct 6 ms 7932 KB Output is correct
24 Correct 7 ms 8396 KB Output is correct
25 Correct 6 ms 8268 KB Output is correct
26 Correct 5 ms 6368 KB Output is correct
27 Correct 6 ms 8140 KB Output is correct
28 Correct 5 ms 5888 KB Output is correct
29 Correct 5 ms 6348 KB Output is correct
30 Correct 5 ms 6476 KB Output is correct
31 Correct 6 ms 7584 KB Output is correct
32 Correct 6 ms 7836 KB Output is correct
33 Correct 6 ms 8140 KB Output is correct
34 Correct 5 ms 7324 KB Output is correct
35 Correct 6 ms 8268 KB Output is correct
36 Correct 7 ms 8652 KB Output is correct
37 Correct 6 ms 8216 KB Output is correct
38 Correct 6 ms 6988 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 5016 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 3 ms 4940 KB Output is correct
7 Correct 3 ms 5020 KB Output is correct
8 Correct 3 ms 5008 KB Output is correct
9 Correct 4 ms 4940 KB Output is correct
10 Correct 4 ms 4940 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 3 ms 4940 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 4940 KB Output is correct
16 Correct 3 ms 5008 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 126 ms 11716 KB Output is correct
20 Correct 120 ms 11856 KB Output is correct
21 Correct 126 ms 12148 KB Output is correct
22 Correct 114 ms 12608 KB Output is correct
23 Correct 78 ms 12020 KB Output is correct
24 Correct 71 ms 11960 KB Output is correct
25 Correct 120 ms 14492 KB Output is correct
26 Correct 105 ms 18372 KB Output is correct
27 Correct 189 ms 18812 KB Output is correct
28 Correct 274 ms 30144 KB Output is correct
29 Correct 289 ms 29236 KB Output is correct
30 Correct 177 ms 18836 KB Output is correct
31 Correct 179 ms 18876 KB Output is correct
32 Correct 245 ms 18800 KB Output is correct
33 Correct 228 ms 17544 KB Output is correct
34 Correct 202 ms 18500 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 5016 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 3 ms 4940 KB Output is correct
7 Correct 3 ms 5020 KB Output is correct
8 Correct 3 ms 5008 KB Output is correct
9 Correct 4 ms 4940 KB Output is correct
10 Correct 4 ms 4940 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 3 ms 4940 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 4940 KB Output is correct
16 Correct 3 ms 5008 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 4 ms 5012 KB Output is correct
22 Correct 6 ms 8652 KB Output is correct
23 Correct 6 ms 7932 KB Output is correct
24 Correct 7 ms 8396 KB Output is correct
25 Correct 6 ms 8268 KB Output is correct
26 Correct 5 ms 6368 KB Output is correct
27 Correct 6 ms 8140 KB Output is correct
28 Correct 5 ms 5888 KB Output is correct
29 Correct 5 ms 6348 KB Output is correct
30 Correct 5 ms 6476 KB Output is correct
31 Correct 6 ms 7584 KB Output is correct
32 Correct 6 ms 7836 KB Output is correct
33 Correct 6 ms 8140 KB Output is correct
34 Correct 5 ms 7324 KB Output is correct
35 Correct 6 ms 8268 KB Output is correct
36 Correct 7 ms 8652 KB Output is correct
37 Correct 6 ms 8216 KB Output is correct
38 Correct 6 ms 6988 KB Output is correct
39 Correct 126 ms 11716 KB Output is correct
40 Correct 120 ms 11856 KB Output is correct
41 Correct 126 ms 12148 KB Output is correct
42 Correct 114 ms 12608 KB Output is correct
43 Correct 78 ms 12020 KB Output is correct
44 Correct 71 ms 11960 KB Output is correct
45 Correct 120 ms 14492 KB Output is correct
46 Correct 105 ms 18372 KB Output is correct
47 Correct 189 ms 18812 KB Output is correct
48 Correct 274 ms 30144 KB Output is correct
49 Correct 289 ms 29236 KB Output is correct
50 Correct 177 ms 18836 KB Output is correct
51 Correct 179 ms 18876 KB Output is correct
52 Correct 245 ms 18800 KB Output is correct
53 Correct 228 ms 17544 KB Output is correct
54 Correct 202 ms 18500 KB Output is correct
55 Correct 11 ms 5816 KB Output is correct
56 Correct 12 ms 5836 KB Output is correct
57 Correct 90 ms 12772 KB Output is correct
58 Correct 42 ms 12472 KB Output is correct
59 Correct 111 ms 19140 KB Output is correct
60 Correct 458 ms 35448 KB Output is correct
61 Correct 186 ms 19148 KB Output is correct
62 Correct 204 ms 23740 KB Output is correct
63 Correct 285 ms 23752 KB Output is correct
64 Correct 454 ms 23112 KB Output is correct
65 Correct 231 ms 19652 KB Output is correct
66 Correct 380 ms 31352 KB Output is correct
67 Correct 150 ms 25140 KB Output is correct
68 Correct 282 ms 23996 KB Output is correct
69 Correct 260 ms 24212 KB Output is correct
70 Correct 304 ms 23436 KB Output is correct