oj.uz

답안 #671330

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
671330 2022-12-12T20:59:13 Z birthdaycake 경주 (Race) (IOI11_race) C++17
100 / 100
 483 ms 110712 KB 
#include "race.h"
#include <bits/stdc++.h>
using namespace std;

#define int long long
 
vector<pair<int,int>>adj[200001];
int dsu[200001],sz[200001];
int inbut[200001][2], ll[200001];
map<int,int> store[200001];
int vs[200001],sum[200001];
int ans = INT_MAX, K;
 
int Find(int x){
    if(dsu[x] == x) return x;
    else return dsu[x] = Find(dsu[x]);
}
 
void Unite(int a, int b, int cur_k, int cur_depth){
    a = Find(a); b = Find(b);
    if(sz[a] > sz[b]) swap(a,b);
    sz[b] += sz[a];
    dsu[a] = b;
    for(auto s: store[a]){
        if(store[b].count(cur_k - s.first) != 0){
            ans = min(ans, s.second - cur_depth + store[b][cur_k - s.first] - cur_depth);
        }
    }
    for(auto s: store[a]){
        if(store[b].count(s.first) == 0 or store[b][s.first] > s.second){
            store[b][s.first] = s.second;
        }
    }
}
void dfs(int x, int par, int depth){
    
    vs[x] = 1;
    int vv = 0;
    for(auto s: adj[x]){
        if(!vs[s.first]){
            sum[s.first] += s.second;
            sum[s.first] += sum[x];
            dfs(s.first, x, depth + 1);
            vv++;
        }
    }
    map<int,int>p;
    p[sum[x]] = depth;
    store[x] = p;
    if(vv){
        for(auto s: adj[x]){
            if(s.first != par){
                Unite(x, s.first, 2 * sum[x] + K, depth);
            }
        }
    }
    int b = Find(x);
    if(store[b].count(sum[x] + K) != 0) ans = min(ans, store[b][sum[x] + K]  - depth);
}
signed best_path(signed n, signed k, signed h[][2], signed l[]){
    ans = INT_MAX;
    for(int i = 1; i <= n; i++){
        sum[i] = 0;
        vs[i] = 0;
        dsu[i] = i;
        sz[i] = 1;
        adj[i].clear();
    }
    for(int i = 0; i < n - 1; i++){
        h[i][0]++; h[i][1]++;
        adj[h[i][0]].push_back({h[i][1], l[i]});
        adj[h[i][1]].push_back({h[i][0], l[i]});
    }
    K = k;
    dfs(1, 0, 1);
    
    if(ans == INT_MAX) ans = -1;
  return ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 8 ms 14420 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 8 ms 14404 KB Output is correct
5 Correct 9 ms 14404 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 8 ms 14420 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 7 ms 14420 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 7 ms 14420 KB Output is correct
12 Correct 8 ms 14412 KB Output is correct
13 Correct 8 ms 14400 KB Output is correct
14 Correct 8 ms 14420 KB Output is correct
15 Correct 7 ms 14400 KB Output is correct
16 Correct 8 ms 14420 KB Output is correct
17 Correct 7 ms 14436 KB Output is correct
18 Correct 8 ms 14420 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 8 ms 14420 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 8 ms 14404 KB Output is correct
5 Correct 9 ms 14404 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 8 ms 14420 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 7 ms 14420 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 7 ms 14420 KB Output is correct
12 Correct 8 ms 14412 KB Output is correct
13 Correct 8 ms 14400 KB Output is correct
14 Correct 8 ms 14420 KB Output is correct
15 Correct 7 ms 14400 KB Output is correct
16 Correct 8 ms 14420 KB Output is correct
17 Correct 7 ms 14436 KB Output is correct
18 Correct 8 ms 14420 KB Output is correct
19 Correct 7 ms 14420 KB Output is correct
20 Correct 7 ms 14404 KB Output is correct
21 Correct 9 ms 14676 KB Output is correct
22 Correct 9 ms 14708 KB Output is correct
23 Correct 8 ms 14676 KB Output is correct
24 Correct 9 ms 14676 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 14548 KB Output is correct
28 Correct 9 ms 14680 KB Output is correct
29 Correct 8 ms 14676 KB Output is correct
30 Correct 8 ms 14676 KB Output is correct
31 Correct 9 ms 14676 KB Output is correct
32 Correct 8 ms 14752 KB Output is correct
33 Correct 9 ms 14804 KB Output is correct
34 Correct 8 ms 14684 KB Output is correct
35 Correct 9 ms 14676 KB Output is correct
36 Correct 9 ms 14688 KB Output is correct
37 Correct 8 ms 14668 KB Output is correct
38 Correct 8 ms 14676 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 8 ms 14420 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 8 ms 14404 KB Output is correct
5 Correct 9 ms 14404 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 8 ms 14420 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 7 ms 14420 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 7 ms 14420 KB Output is correct
12 Correct 8 ms 14412 KB Output is correct
13 Correct 8 ms 14400 KB Output is correct
14 Correct 8 ms 14420 KB Output is correct
15 Correct 7 ms 14400 KB Output is correct
16 Correct 8 ms 14420 KB Output is correct
17 Correct 7 ms 14436 KB Output is correct
18 Correct 8 ms 14420 KB Output is correct
19 Correct 133 ms 40824 KB Output is correct
20 Correct 138 ms 40796 KB Output is correct
21 Correct 134 ms 40500 KB Output is correct
22 Correct 137 ms 40096 KB Output is correct
23 Correct 171 ms 53212 KB Output is correct
24 Correct 133 ms 42964 KB Output is correct
25 Correct 116 ms 42352 KB Output is correct
26 Correct 75 ms 51508 KB Output is correct
27 Correct 200 ms 55692 KB Output is correct
28 Correct 328 ms 101044 KB Output is correct
29 Correct 336 ms 99160 KB Output is correct
30 Correct 199 ms 55696 KB Output is correct
31 Correct 199 ms 55696 KB Output is correct
32 Correct 290 ms 56032 KB Output is correct
33 Correct 265 ms 60860 KB Output is correct
34 Correct 371 ms 93588 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 8 ms 14420 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 8 ms 14404 KB Output is correct
5 Correct 9 ms 14404 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 8 ms 14420 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 7 ms 14420 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 7 ms 14420 KB Output is correct
12 Correct 8 ms 14412 KB Output is correct
13 Correct 8 ms 14400 KB Output is correct
14 Correct 8 ms 14420 KB Output is correct
15 Correct 7 ms 14400 KB Output is correct
16 Correct 8 ms 14420 KB Output is correct
17 Correct 7 ms 14436 KB Output is correct
18 Correct 8 ms 14420 KB Output is correct
19 Correct 7 ms 14420 KB Output is correct
20 Correct 7 ms 14404 KB Output is correct
21 Correct 9 ms 14676 KB Output is correct
22 Correct 9 ms 14708 KB Output is correct
23 Correct 8 ms 14676 KB Output is correct
24 Correct 9 ms 14676 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 14548 KB Output is correct
28 Correct 9 ms 14680 KB Output is correct
29 Correct 8 ms 14676 KB Output is correct
30 Correct 8 ms 14676 KB Output is correct
31 Correct 9 ms 14676 KB Output is correct
32 Correct 8 ms 14752 KB Output is correct
33 Correct 9 ms 14804 KB Output is correct
34 Correct 8 ms 14684 KB Output is correct
35 Correct 9 ms 14676 KB Output is correct
36 Correct 9 ms 14688 KB Output is correct
37 Correct 8 ms 14668 KB Output is correct
38 Correct 8 ms 14676 KB Output is correct
39 Correct 133 ms 40824 KB Output is correct
40 Correct 138 ms 40796 KB Output is correct
41 Correct 134 ms 40500 KB Output is correct
42 Correct 137 ms 40096 KB Output is correct
43 Correct 171 ms 53212 KB Output is correct
44 Correct 133 ms 42964 KB Output is correct
45 Correct 116 ms 42352 KB Output is correct
46 Correct 75 ms 51508 KB Output is correct
47 Correct 200 ms 55692 KB Output is correct
48 Correct 328 ms 101044 KB Output is correct
49 Correct 336 ms 99160 KB Output is correct
50 Correct 199 ms 55696 KB Output is correct
51 Correct 199 ms 55696 KB Output is correct
52 Correct 290 ms 56032 KB Output is correct
53 Correct 265 ms 60860 KB Output is correct
54 Correct 371 ms 93588 KB Output is correct
55 Correct 21 ms 18004 KB Output is correct
56 Correct 15 ms 16656 KB Output is correct
57 Correct 78 ms 38256 KB Output is correct
58 Correct 54 ms 30668 KB Output is correct
59 Correct 103 ms 57588 KB Output is correct
60 Correct 306 ms 99532 KB Output is correct
61 Correct 224 ms 59284 KB Output is correct
62 Correct 191 ms 55760 KB Output is correct
63 Correct 290 ms 55820 KB Output is correct
64 Correct 483 ms 110712 KB Output is correct
65 Correct 472 ms 108696 KB Output is correct
66 Correct 337 ms 94504 KB Output is correct
67 Correct 208 ms 48656 KB Output is correct
68 Correct 371 ms 72148 KB Output is correct
69 Correct 391 ms 77032 KB Output is correct
70 Correct 346 ms 69580 KB Output is correct