oj.uz

답안 #881448

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
881448 2023-12-01T08:57:32 Z Karoot 경주 (Race) (IOI11_race) C++17
100 / 100
 370 ms 57608 KB 
#include <iostream>
#include <cmath>
#include <unordered_map>
#include <map>
#include <set>
#include <queue>
#include <vector>
#include <string>
#include <iomanip>
#include <algorithm>
 
#define all(x)  (x).begin(), (x).end()
#define rall(x)  (x).rbegin(), (x).rend()
 
using namespace std;
 
typedef long long ll;
 
ll linf = 1e15+1;
 
inline void scoobydoobydoo(){
    ios::sync_with_stdio(false);
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
}
 
const int MAXN = 1e6+7;
bool isVisited[MAXN];
vector<pair<int, int>> adj[MAXN];
bool visited[MAXN];
int subSz[MAXN];
int ans = 1e9+1;
int cnt[MAXN];
 
int subTreeSz(int node, int parent){
    subSz[node] = 1;
    for (auto& e : adj[node]){
        if (e.first != parent && !isVisited[e.first])subSz[node] += subTreeSz(e.first, node);
    }
    return subSz[node];
}
 
int centroidFind(int node, int parent, int target){
    for (auto& e : adj[node]){
        if (e.first != parent && !isVisited[e.first] && target <= subSz[e.first]){
            return centroidFind(e.first, node, target);
        }
    }
    return node;
}
 
 
void cleaning(int node, int parent, int w, int k){
    if (w > k)return;
    cnt[w] = 1e9;
    //cout << node << " " << parent << " " << w << endl;
    for (auto& e : adj[node]){
        if (e.first != parent && !isVisited[e.first]){
            cleaning(e.first, node, w+e.second, k);
        }
    }
}
 
void bfs(int node, int parent, int k, int w, bool filling, int depth = 1){
    if (w > k)return;
    if (filling)(cnt[w] = min(cnt[w], depth));
    else {
        ans = min(ans, cnt[k-w]+depth);
    }
    //cout << node << " " << parent << " " << k << " " << w << " " << filling << " " << depth << endl;
    for (auto& e : adj[node]){
        if (e.first != parent && !isVisited[e.first]){
            bfs(e.first, node, k, w + e.second, filling, depth+1);
        }
    }
}
 
 
void centroidDecomp(int node, int k){
    node = centroidFind(node, -1, subTreeSz(node, -1)/2);
    //cout << "CENTROID: " << node << endl;
    isVisited[node] = true;
    cnt[0] = 0;
    for (auto& e : adj[node]){
        if (isVisited[e.first])continue;
        bfs(e.first, node, k, e.second, 0);
        bfs(e.first, node, k, e.second, 1);
    }
    //cout << "CLEANING" << endl;
    cleaning(node, node, 0, k);
    //cout << ans << endl;
 
    for (auto& e : adj[node]){
        if (!isVisited[e.first])centroidDecomp(e.first, k);
    }
}
 
int best_path(int N, int K, int H[][2], int L[]){
    //cout << "no!" << endl;
    for (int i = 0; i <= K; i++){
        cnt[i] = 1e9;
    }
    //cout << "yo!" << endl;
    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]});
    }
    centroidDecomp(0, K);
    return (ans < 1e8 ? ans : -1);
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 30040 KB Output is correct
2 Correct 6 ms 30044 KB Output is correct
3 Correct 6 ms 29996 KB Output is correct
4 Correct 8 ms 30044 KB Output is correct
5 Correct 6 ms 30220 KB Output is correct
6 Correct 6 ms 30040 KB Output is correct
7 Correct 7 ms 30044 KB Output is correct
8 Correct 6 ms 30148 KB Output is correct
9 Correct 7 ms 30044 KB Output is correct
10 Correct 6 ms 30044 KB Output is correct
11 Correct 7 ms 30044 KB Output is correct
12 Correct 7 ms 30044 KB Output is correct
13 Correct 7 ms 30204 KB Output is correct
14 Correct 6 ms 30044 KB Output is correct
15 Correct 7 ms 30044 KB Output is correct
16 Correct 7 ms 30044 KB Output is correct
17 Correct 7 ms 30044 KB Output is correct
18 Correct 7 ms 30044 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 30040 KB Output is correct
2 Correct 6 ms 30044 KB Output is correct
3 Correct 6 ms 29996 KB Output is correct
4 Correct 8 ms 30044 KB Output is correct
5 Correct 6 ms 30220 KB Output is correct
6 Correct 6 ms 30040 KB Output is correct
7 Correct 7 ms 30044 KB Output is correct
8 Correct 6 ms 30148 KB Output is correct
9 Correct 7 ms 30044 KB Output is correct
10 Correct 6 ms 30044 KB Output is correct
11 Correct 7 ms 30044 KB Output is correct
12 Correct 7 ms 30044 KB Output is correct
13 Correct 7 ms 30204 KB Output is correct
14 Correct 6 ms 30044 KB Output is correct
15 Correct 7 ms 30044 KB Output is correct
16 Correct 7 ms 30044 KB Output is correct
17 Correct 7 ms 30044 KB Output is correct
18 Correct 7 ms 30044 KB Output is correct
19 Correct 7 ms 30204 KB Output is correct
20 Correct 7 ms 30044 KB Output is correct
21 Correct 7 ms 30040 KB Output is correct
22 Correct 8 ms 32332 KB Output is correct
23 Correct 8 ms 32224 KB Output is correct
24 Correct 7 ms 32092 KB Output is correct
25 Correct 8 ms 32284 KB Output is correct
26 Correct 7 ms 32092 KB Output is correct
27 Correct 8 ms 32092 KB Output is correct
28 Correct 7 ms 32092 KB Output is correct
29 Correct 8 ms 32088 KB Output is correct
30 Correct 8 ms 32092 KB Output is correct
31 Correct 7 ms 32092 KB Output is correct
32 Correct 8 ms 32092 KB Output is correct
33 Correct 8 ms 32092 KB Output is correct
34 Correct 8 ms 32180 KB Output is correct
35 Correct 8 ms 32256 KB Output is correct
36 Correct 8 ms 32216 KB Output is correct
37 Correct 8 ms 32092 KB Output is correct
38 Correct 8 ms 32216 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 30040 KB Output is correct
2 Correct 6 ms 30044 KB Output is correct
3 Correct 6 ms 29996 KB Output is correct
4 Correct 8 ms 30044 KB Output is correct
5 Correct 6 ms 30220 KB Output is correct
6 Correct 6 ms 30040 KB Output is correct
7 Correct 7 ms 30044 KB Output is correct
8 Correct 6 ms 30148 KB Output is correct
9 Correct 7 ms 30044 KB Output is correct
10 Correct 6 ms 30044 KB Output is correct
11 Correct 7 ms 30044 KB Output is correct
12 Correct 7 ms 30044 KB Output is correct
13 Correct 7 ms 30204 KB Output is correct
14 Correct 6 ms 30044 KB Output is correct
15 Correct 7 ms 30044 KB Output is correct
16 Correct 7 ms 30044 KB Output is correct
17 Correct 7 ms 30044 KB Output is correct
18 Correct 7 ms 30044 KB Output is correct
19 Correct 117 ms 37536 KB Output is correct
20 Correct 97 ms 37528 KB Output is correct
21 Correct 109 ms 37552 KB Output is correct
22 Correct 94 ms 37460 KB Output is correct
23 Correct 58 ms 37664 KB Output is correct
24 Correct 47 ms 37760 KB Output is correct
25 Correct 133 ms 40536 KB Output is correct
26 Correct 95 ms 43220 KB Output is correct
27 Correct 122 ms 45132 KB Output is correct
28 Correct 182 ms 56476 KB Output is correct
29 Correct 185 ms 55576 KB Output is correct
30 Correct 114 ms 44952 KB Output is correct
31 Correct 120 ms 45136 KB Output is correct
32 Correct 150 ms 45032 KB Output is correct
33 Correct 169 ms 44044 KB Output is correct
34 Correct 132 ms 44684 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 30040 KB Output is correct
2 Correct 6 ms 30044 KB Output is correct
3 Correct 6 ms 29996 KB Output is correct
4 Correct 8 ms 30044 KB Output is correct
5 Correct 6 ms 30220 KB Output is correct
6 Correct 6 ms 30040 KB Output is correct
7 Correct 7 ms 30044 KB Output is correct
8 Correct 6 ms 30148 KB Output is correct
9 Correct 7 ms 30044 KB Output is correct
10 Correct 6 ms 30044 KB Output is correct
11 Correct 7 ms 30044 KB Output is correct
12 Correct 7 ms 30044 KB Output is correct
13 Correct 7 ms 30204 KB Output is correct
14 Correct 6 ms 30044 KB Output is correct
15 Correct 7 ms 30044 KB Output is correct
16 Correct 7 ms 30044 KB Output is correct
17 Correct 7 ms 30044 KB Output is correct
18 Correct 7 ms 30044 KB Output is correct
19 Correct 7 ms 30204 KB Output is correct
20 Correct 7 ms 30044 KB Output is correct
21 Correct 7 ms 30040 KB Output is correct
22 Correct 8 ms 32332 KB Output is correct
23 Correct 8 ms 32224 KB Output is correct
24 Correct 7 ms 32092 KB Output is correct
25 Correct 8 ms 32284 KB Output is correct
26 Correct 7 ms 32092 KB Output is correct
27 Correct 8 ms 32092 KB Output is correct
28 Correct 7 ms 32092 KB Output is correct
29 Correct 8 ms 32088 KB Output is correct
30 Correct 8 ms 32092 KB Output is correct
31 Correct 7 ms 32092 KB Output is correct
32 Correct 8 ms 32092 KB Output is correct
33 Correct 8 ms 32092 KB Output is correct
34 Correct 8 ms 32180 KB Output is correct
35 Correct 8 ms 32256 KB Output is correct
36 Correct 8 ms 32216 KB Output is correct
37 Correct 8 ms 32092 KB Output is correct
38 Correct 8 ms 32216 KB Output is correct
39 Correct 117 ms 37536 KB Output is correct
40 Correct 97 ms 37528 KB Output is correct
41 Correct 109 ms 37552 KB Output is correct
42 Correct 94 ms 37460 KB Output is correct
43 Correct 58 ms 37664 KB Output is correct
44 Correct 47 ms 37760 KB Output is correct
45 Correct 133 ms 40536 KB Output is correct
46 Correct 95 ms 43220 KB Output is correct
47 Correct 122 ms 45132 KB Output is correct
48 Correct 182 ms 56476 KB Output is correct
49 Correct 185 ms 55576 KB Output is correct
50 Correct 114 ms 44952 KB Output is correct
51 Correct 120 ms 45136 KB Output is correct
52 Correct 150 ms 45032 KB Output is correct
53 Correct 169 ms 44044 KB Output is correct
54 Correct 132 ms 44684 KB Output is correct
55 Correct 13 ms 30556 KB Output is correct
56 Correct 15 ms 30556 KB Output is correct
57 Correct 58 ms 37772 KB Output is correct
58 Correct 34 ms 37260 KB Output is correct
59 Correct 92 ms 45188 KB Output is correct
60 Correct 370 ms 57608 KB Output is correct
61 Correct 133 ms 45096 KB Output is correct
62 Correct 154 ms 47184 KB Output is correct
63 Correct 211 ms 47096 KB Output is correct
64 Correct 360 ms 47316 KB Output is correct
65 Correct 159 ms 45968 KB Output is correct
66 Correct 293 ms 55708 KB Output is correct
67 Correct 83 ms 47812 KB Output is correct
68 Correct 179 ms 48088 KB Output is correct
69 Correct 243 ms 48208 KB Output is correct
70 Correct 151 ms 47444 KB Output is correct