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답안 #746475

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
746475 2023-05-22T13:35:45 Z Sami_Massah 경주 (Race) (IOI11_race) C++17
100 / 100
 482 ms 84088 KB 
#include <bits/stdc++.h>
using namespace std;


const long long maxn = 2e5 + 12, mod = 998244353, inf = 1e9 + 12 ;
long long n, k, ans = maxn, h[maxn], sz[maxn], cost[maxn], U[maxn], V[maxn], dist[maxn];
int H2[maxn][2], L2[maxn];
vector <int> conn[maxn];
map <int, int> mp[maxn];
bitset <maxn> marked;
void dfs_set(int u){
    marked[u] = 1;
    sz[u] = 1;
    for(int e: conn[u]){
        int v = u ^ U[e] ^ V[e];
        if(!marked[v]){
            h[v] = h[u] + 1;
            dist[v] = dist[u] + cost[e];
            dfs_set(v);
            sz[u] += sz[v];
        }
        }
}
void dfs(int u, int p = -1){
    marked[u] = 1;
    for(int e: conn[u]){
        int v = u ^ U[e] ^ V[e];
        if(!marked[v]){
            dfs(v, u);
            if(mp[v].find(k + dist[u]) != mp[v].end())
                ans = min(ans, mp[v][k + dist[u]] - h[u]);
            }
    }
    pair<long long, int> mx = make_pair(0, -1);
    for(int e: conn[u]){
        int v = u ^ U[e] ^ V[e];
        if(v != p)
            mx = max(mx, make_pair(sz[v], v));
    }
    int f = mx.second;
    if(f != -1){
        swap(mp[f], mp[u]);
        for(int e: conn[u]){
            int v = u ^ U[e] ^ V[e];
            if(v != p && v != f){
                for(auto len: mp[v]){
                    if(mp[u].find(k + dist[u] * 2 - len.first) != mp[u].end())
                        ans = min(ans, mp[u][k + dist[u] * 2 - len.first] + len.second - 2 * h[u]);
                }
                for(auto len: mp[v]){
                    int x = mp[u][len.first];
                    if(x == 0)
                        mp[u][len.first] = len.second;
                    else
                        mp[u][len.first] = min(x, len.second);
                }


            }

        }

    }
    long long x = mp[u][dist[u]];
    if(x == 0)
        mp[u][dist[u]] = h[u];
    else
        mp[u][dist[u]] = min(x, h[u]);
}


int best_path(int N, int K, int H[][2], int L[]){
    n = N;
    k = K;
    for(int i = 0; i < n - 1; i++){
        cost[i] = L[i];
        U[i] = H[i][0];
        V[i] = H[i][1];
        conn[U[i]].push_back(i);
        conn[V[i]].push_back(i);

    }
  //  cout << n << ' ' << k << endl;
    dfs_set(1);
    marked = 0;
    dfs(1);
    if(ans == maxn)
        ans = -1;
    return ans;
}
/*
int main(){
    int N, K;
    cin >> N >> K;
    for(int i = 0; i < N - 1; i++)
        cin >> H2[i][0] >> H2[i][0];
    for(int i = 0; i < N - 1; i++)
        cin >> L2[i];
    cout << best_path(N, K, H2, L2) << endl;

}
*/

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 8 ms 14420 KB Output is correct
3 Correct 8 ms 14416 KB Output is correct
4 Correct 8 ms 14420 KB Output is correct
5 Correct 8 ms 14548 KB Output is correct
6 Correct 8 ms 14420 KB Output is correct
7 Correct 8 ms 14464 KB Output is correct
8 Correct 8 ms 14536 KB Output is correct
9 Correct 9 ms 14420 KB Output is correct
10 Correct 9 ms 14536 KB Output is correct
11 Correct 9 ms 14536 KB Output is correct
12 Correct 8 ms 14532 KB Output is correct
13 Correct 8 ms 14412 KB Output is correct
14 Correct 8 ms 14432 KB Output is correct
15 Correct 8 ms 14528 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 8 ms 14420 KB Output is correct
3 Correct 8 ms 14416 KB Output is correct
4 Correct 8 ms 14420 KB Output is correct
5 Correct 8 ms 14548 KB Output is correct
6 Correct 8 ms 14420 KB Output is correct
7 Correct 8 ms 14464 KB Output is correct
8 Correct 8 ms 14536 KB Output is correct
9 Correct 9 ms 14420 KB Output is correct
10 Correct 9 ms 14536 KB Output is correct
11 Correct 9 ms 14536 KB Output is correct
12 Correct 8 ms 14532 KB Output is correct
13 Correct 8 ms 14412 KB Output is correct
14 Correct 8 ms 14432 KB Output is correct
15 Correct 8 ms 14528 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 14540 KB Output is correct
20 Correct 8 ms 14408 KB Output is correct
21 Correct 11 ms 14748 KB Output is correct
22 Correct 9 ms 14680 KB Output is correct
23 Correct 10 ms 14676 KB Output is correct
24 Correct 9 ms 14728 KB Output is correct
25 Correct 9 ms 14676 KB Output is correct
26 Correct 9 ms 14676 KB Output is correct
27 Correct 8 ms 14572 KB Output is correct
28 Correct 10 ms 14676 KB Output is correct
29 Correct 9 ms 14676 KB Output is correct
30 Correct 12 ms 14764 KB Output is correct
31 Correct 10 ms 14676 KB Output is correct
32 Correct 12 ms 14672 KB Output is correct
33 Correct 9 ms 14664 KB Output is correct
34 Correct 9 ms 14672 KB Output is correct
35 Correct 10 ms 14764 KB Output is correct
36 Correct 11 ms 14676 KB Output is correct
37 Correct 9 ms 14672 KB Output is correct
38 Correct 9 ms 14676 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 8 ms 14420 KB Output is correct
3 Correct 8 ms 14416 KB Output is correct
4 Correct 8 ms 14420 KB Output is correct
5 Correct 8 ms 14548 KB Output is correct
6 Correct 8 ms 14420 KB Output is correct
7 Correct 8 ms 14464 KB Output is correct
8 Correct 8 ms 14536 KB Output is correct
9 Correct 9 ms 14420 KB Output is correct
10 Correct 9 ms 14536 KB Output is correct
11 Correct 9 ms 14536 KB Output is correct
12 Correct 8 ms 14532 KB Output is correct
13 Correct 8 ms 14412 KB Output is correct
14 Correct 8 ms 14432 KB Output is correct
15 Correct 8 ms 14528 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 142 ms 33236 KB Output is correct
20 Correct 145 ms 33128 KB Output is correct
21 Correct 137 ms 33176 KB Output is correct
22 Correct 150 ms 33360 KB Output is correct
23 Correct 157 ms 43200 KB Output is correct
24 Correct 129 ms 38016 KB Output is correct
25 Correct 100 ms 42268 KB Output is correct
26 Correct 59 ms 43616 KB Output is correct
27 Correct 248 ms 45628 KB Output is correct
28 Correct 302 ms 80384 KB Output is correct
29 Correct 306 ms 70944 KB Output is correct
30 Correct 249 ms 45644 KB Output is correct
31 Correct 253 ms 45636 KB Output is correct
32 Correct 286 ms 45772 KB Output is correct
33 Correct 246 ms 45140 KB Output is correct
34 Correct 348 ms 70760 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 8 ms 14420 KB Output is correct
3 Correct 8 ms 14416 KB Output is correct
4 Correct 8 ms 14420 KB Output is correct
5 Correct 8 ms 14548 KB Output is correct
6 Correct 8 ms 14420 KB Output is correct
7 Correct 8 ms 14464 KB Output is correct
8 Correct 8 ms 14536 KB Output is correct
9 Correct 9 ms 14420 KB Output is correct
10 Correct 9 ms 14536 KB Output is correct
11 Correct 9 ms 14536 KB Output is correct
12 Correct 8 ms 14532 KB Output is correct
13 Correct 8 ms 14412 KB Output is correct
14 Correct 8 ms 14432 KB Output is correct
15 Correct 8 ms 14528 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 14540 KB Output is correct
20 Correct 8 ms 14408 KB Output is correct
21 Correct 11 ms 14748 KB Output is correct
22 Correct 9 ms 14680 KB Output is correct
23 Correct 10 ms 14676 KB Output is correct
24 Correct 9 ms 14728 KB Output is correct
25 Correct 9 ms 14676 KB Output is correct
26 Correct 9 ms 14676 KB Output is correct
27 Correct 8 ms 14572 KB Output is correct
28 Correct 10 ms 14676 KB Output is correct
29 Correct 9 ms 14676 KB Output is correct
30 Correct 12 ms 14764 KB Output is correct
31 Correct 10 ms 14676 KB Output is correct
32 Correct 12 ms 14672 KB Output is correct
33 Correct 9 ms 14664 KB Output is correct
34 Correct 9 ms 14672 KB Output is correct
35 Correct 10 ms 14764 KB Output is correct
36 Correct 11 ms 14676 KB Output is correct
37 Correct 9 ms 14672 KB Output is correct
38 Correct 9 ms 14676 KB Output is correct
39 Correct 142 ms 33236 KB Output is correct
40 Correct 145 ms 33128 KB Output is correct
41 Correct 137 ms 33176 KB Output is correct
42 Correct 150 ms 33360 KB Output is correct
43 Correct 157 ms 43200 KB Output is correct
44 Correct 129 ms 38016 KB Output is correct
45 Correct 100 ms 42268 KB Output is correct
46 Correct 59 ms 43616 KB Output is correct
47 Correct 248 ms 45628 KB Output is correct
48 Correct 302 ms 80384 KB Output is correct
49 Correct 306 ms 70944 KB Output is correct
50 Correct 249 ms 45644 KB Output is correct
51 Correct 253 ms 45636 KB Output is correct
52 Correct 286 ms 45772 KB Output is correct
53 Correct 246 ms 45140 KB Output is correct
54 Correct 348 ms 70760 KB Output is correct
55 Correct 23 ms 17116 KB Output is correct
56 Correct 16 ms 16128 KB Output is correct
57 Correct 84 ms 32076 KB Output is correct
58 Correct 56 ms 29620 KB Output is correct
59 Correct 85 ms 48292 KB Output is correct
60 Correct 270 ms 68012 KB Output is correct
61 Correct 269 ms 48312 KB Output is correct
62 Correct 217 ms 45636 KB Output is correct
63 Correct 278 ms 45644 KB Output is correct
64 Correct 481 ms 84088 KB Output is correct
65 Correct 482 ms 83824 KB Output is correct
66 Correct 288 ms 78412 KB Output is correct
67 Correct 201 ms 46016 KB Output is correct
68 Correct 450 ms 59800 KB Output is correct
69 Correct 398 ms 60356 KB Output is correct
70 Correct 361 ms 57800 KB Output is correct