oj.uz

답안 #752240

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
752240 2023-06-02T14:57:13 Z inventiontime 경주 (Race) (IOI11_race) C++17
100 / 100
 398 ms 68124 KB 
#include "race.h"

#include <bits/stdc++.h>
using namespace std;

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

#define all(x) (x).begin(), (x).end()
#define all1(x) (x).begin()+1, (x).end()
#define loop(i, n) for(int i = 0; i < n; i++)
#define loop1(i, n) for(int i = 1; i <= n; i++)

#define print(x) cout << #x << ": " << x << endl << flush

template<class T> bool ckmin(T&a, T b) { bool B = a > b; a = min(a, b); return B; }
template<class T> bool ckmax(T&a, T b) { bool B = a < b; a = max(a, b); return B; }

typedef long long ll;
typedef vector<int> vi;
typedef array<int, 2> ii;
typedef vector<ii> vii;
typedef map<int, int> mii;

const int inf = 1e9;
const int maxn = 2e5+5;

vii adj[maxn];
int dep[maxn];
int dist[maxn];
int k;
int res = inf;

mii dfs(int u, int p) {
    mii mp;
    mp[dist[u]] = dep[u];
    for(auto [v, c] : adj[u]) if(v != p) {
        dep[v] = dep[u] + 1;
        dist[v] = dist[u] + c;
        mii mp2 = dfs(v, u);
        if(mp.size() < mp2.size())
            swap(mp, mp2);
        for(auto [di, de] : mp2) {
            auto it = mp.find(k + 2*dist[u] - di);
            if(it != mp.end()) ckmin(res, de + it->ss - 2*dep[u]);
        }
        for(auto [di, de] : mp2) {
            auto it = mp.find(di);
            if(it != mp.end()) ckmin(it->ss, de);
            else mp[di] = de;
        }
    }
    return mp;
}

int best_path(int n, int K, int h[][2], int l[]) {

    k = K;
    loop(i, n-1) {
        int u = h[i][0], v = h[i][1];
        int c = l[i];
        adj[u].pb({v, c});
        adj[v].pb({u, c});
    }

    dep[0] = 1;
    dist[0] = 1;
    dfs(0, 0);

    return (res == inf ? -1 : res);

}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Correct 3 ms 5012 KB Output is correct
4 Correct 4 ms 5004 KB Output is correct
5 Correct 3 ms 5016 KB Output is correct
6 Correct 3 ms 5076 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 5004 KB Output is correct
9 Correct 4 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 5008 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 4 ms 4948 KB Output is correct
14 Correct 3 ms 5048 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 4 ms 4932 KB Output is correct
18 Correct 3 ms 5008 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Correct 3 ms 5012 KB Output is correct
4 Correct 4 ms 5004 KB Output is correct
5 Correct 3 ms 5016 KB Output is correct
6 Correct 3 ms 5076 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 5004 KB Output is correct
9 Correct 4 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 5008 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 4 ms 4948 KB Output is correct
14 Correct 3 ms 5048 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 4 ms 4932 KB Output is correct
18 Correct 3 ms 5008 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 4 ms 5076 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 5 ms 5076 KB Output is correct
24 Correct 5 ms 5076 KB Output is correct
25 Correct 4 ms 5152 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 4 ms 5076 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 5 ms 5020 KB Output is correct
30 Correct 5 ms 5148 KB Output is correct
31 Correct 4 ms 5148 KB Output is correct
32 Correct 4 ms 5076 KB Output is correct
33 Correct 4 ms 5076 KB Output is correct
34 Correct 4 ms 5076 KB Output is correct
35 Correct 3 ms 5076 KB Output is correct
36 Correct 4 ms 5204 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 4 ms 5076 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Correct 3 ms 5012 KB Output is correct
4 Correct 4 ms 5004 KB Output is correct
5 Correct 3 ms 5016 KB Output is correct
6 Correct 3 ms 5076 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 5004 KB Output is correct
9 Correct 4 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 5008 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 4 ms 4948 KB Output is correct
14 Correct 3 ms 5048 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 4 ms 4932 KB Output is correct
18 Correct 3 ms 5008 KB Output is correct
19 Correct 85 ms 11956 KB Output is correct
20 Correct 97 ms 12096 KB Output is correct
21 Correct 91 ms 12000 KB Output is correct
22 Correct 92 ms 12080 KB Output is correct
23 Correct 125 ms 12464 KB Output is correct
24 Correct 101 ms 12264 KB Output is correct
25 Correct 73 ms 24820 KB Output is correct
26 Correct 60 ms 36412 KB Output is correct
27 Correct 175 ms 19604 KB Output is correct
28 Correct 235 ms 68124 KB Output is correct
29 Correct 259 ms 65848 KB Output is correct
30 Correct 185 ms 19652 KB Output is correct
31 Correct 152 ms 19644 KB Output is correct
32 Correct 219 ms 19788 KB Output is correct
33 Correct 152 ms 19020 KB Output is correct
34 Correct 293 ms 29332 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Correct 3 ms 5012 KB Output is correct
4 Correct 4 ms 5004 KB Output is correct
5 Correct 3 ms 5016 KB Output is correct
6 Correct 3 ms 5076 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 5004 KB Output is correct
9 Correct 4 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 5008 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 4 ms 4948 KB Output is correct
14 Correct 3 ms 5048 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 4 ms 4932 KB Output is correct
18 Correct 3 ms 5008 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 4 ms 5076 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 5 ms 5076 KB Output is correct
24 Correct 5 ms 5076 KB Output is correct
25 Correct 4 ms 5152 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 4 ms 5076 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 5 ms 5020 KB Output is correct
30 Correct 5 ms 5148 KB Output is correct
31 Correct 4 ms 5148 KB Output is correct
32 Correct 4 ms 5076 KB Output is correct
33 Correct 4 ms 5076 KB Output is correct
34 Correct 4 ms 5076 KB Output is correct
35 Correct 3 ms 5076 KB Output is correct
36 Correct 4 ms 5204 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 4 ms 5076 KB Output is correct
39 Correct 85 ms 11956 KB Output is correct
40 Correct 97 ms 12096 KB Output is correct
41 Correct 91 ms 12000 KB Output is correct
42 Correct 92 ms 12080 KB Output is correct
43 Correct 125 ms 12464 KB Output is correct
44 Correct 101 ms 12264 KB Output is correct
45 Correct 73 ms 24820 KB Output is correct
46 Correct 60 ms 36412 KB Output is correct
47 Correct 175 ms 19604 KB Output is correct
48 Correct 235 ms 68124 KB Output is correct
49 Correct 259 ms 65848 KB Output is correct
50 Correct 185 ms 19652 KB Output is correct
51 Correct 152 ms 19644 KB Output is correct
52 Correct 219 ms 19788 KB Output is correct
53 Correct 152 ms 19020 KB Output is correct
54 Correct 293 ms 29332 KB Output is correct
55 Correct 20 ms 5972 KB Output is correct
56 Correct 11 ms 5716 KB Output is correct
57 Correct 55 ms 12108 KB Output is correct
58 Correct 40 ms 11840 KB Output is correct
59 Correct 87 ms 36488 KB Output is correct
60 Correct 235 ms 66572 KB Output is correct
61 Correct 224 ms 21012 KB Output is correct
62 Correct 172 ms 19696 KB Output is correct
63 Correct 179 ms 19836 KB Output is correct
64 Correct 366 ms 26260 KB Output is correct
65 Correct 398 ms 29716 KB Output is correct
66 Correct 241 ms 60760 KB Output is correct
67 Correct 131 ms 20160 KB Output is correct
68 Correct 321 ms 28256 KB Output is correct
69 Correct 348 ms 31740 KB Output is correct
70 Correct 263 ms 27296 KB Output is correct