oj.uz

답안 #1107216

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1107216 2024-11-01T02:47:32 Z dzhoz0 경주 (Race) (IOI11_race) C++17
100 / 100
 362 ms 88136 KB 
/*
    ghmt the cutie :3
          UwU
*/


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

#define INF 1e9
#define f first
#define s second
#define pii pair<int, int>
#define vi vector<int>


const int MAXN = 2e5;
int n, k;
vector<pii> g[MAXN + 5];
int h[MAXN + 5], d[MAXN + 5];
int res = INF;
map<int, int> mp[MAXN + 5];
void pre_dfs(int u, int par = -1) {
    mp[u][d[u]] = h[u];
    for(auto [v, w] : g[u]) {
        if(v == par) continue;
        h[v] = h[u] + 1;
        d[v] = d[u] + w;
        pre_dfs(v, u);
    }
}

// mp[u][w1]

void dfs(int u, int par = -1) {
    for(auto [v, w] : g[u]) {
        if(v == par) continue;
        dfs(v, u);
        if(mp[u].size() < mp[v].size()) swap(mp[u], mp[v]);
        for(auto it : mp[v]) {
            int need = (k + 2 * d[u]) - it.f;
            if(mp[u].find(need) != mp[u].end()) {
                // cout << u << ' ' << v << ' ' << it.f << ' ' << k << ' ' <<  it.s + mp[u][need] - 2 * d[u] << '\n';
                res = min(res, it.s + mp[u][need] - 2 * h[u]);
            } 

        }
        for(auto it : mp[v]) {
            if(mp[u].find(it.f) != mp[u].end()) mp[u][it.f] = min(mp[u][it.f], it.s); 
            else mp[u][it.f] = it.s;
        }
    }
}

int solve() {
    memset(h, 0, sizeof(h));
    memset(d, 0, sizeof(d));
    pre_dfs(1, 1);
    // for(int i = 1; i <= n; i++) cout << i << ' ' << h[i] << '\n'; cout << '\n';
    dfs(1, 1);
    if(res == INF) return -1;
    else return res;
}


int best_path(int N, int K, int H[][2], int L[])
{
    // cout << "saygex\n";
    n = N, k = K;
    for(int i = 0; i < n - 1; i++) {
        int u = H[i][0], v = H[i][1], w = L[i];
        u++, v++;
        g[u].push_back({v, w});
        g[v].push_back({u, w});
    }
    return solve();
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 19536 KB Output is correct
2 Correct 3 ms 19536 KB Output is correct
3 Correct 4 ms 19536 KB Output is correct
4 Correct 3 ms 19536 KB Output is correct
5 Correct 3 ms 19536 KB Output is correct
6 Correct 4 ms 19536 KB Output is correct
7 Correct 3 ms 19536 KB Output is correct
8 Correct 4 ms 19536 KB Output is correct
9 Correct 3 ms 19536 KB Output is correct
10 Correct 4 ms 19536 KB Output is correct
11 Correct 3 ms 19536 KB Output is correct
12 Correct 4 ms 19536 KB Output is correct
13 Correct 4 ms 19536 KB Output is correct
14 Correct 3 ms 19536 KB Output is correct
15 Correct 3 ms 19536 KB Output is correct
16 Correct 4 ms 19536 KB Output is correct
17 Correct 4 ms 19536 KB Output is correct
18 Correct 3 ms 19536 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 19536 KB Output is correct
2 Correct 3 ms 19536 KB Output is correct
3 Correct 4 ms 19536 KB Output is correct
4 Correct 3 ms 19536 KB Output is correct
5 Correct 3 ms 19536 KB Output is correct
6 Correct 4 ms 19536 KB Output is correct
7 Correct 3 ms 19536 KB Output is correct
8 Correct 4 ms 19536 KB Output is correct
9 Correct 3 ms 19536 KB Output is correct
10 Correct 4 ms 19536 KB Output is correct
11 Correct 3 ms 19536 KB Output is correct
12 Correct 4 ms 19536 KB Output is correct
13 Correct 4 ms 19536 KB Output is correct
14 Correct 3 ms 19536 KB Output is correct
15 Correct 3 ms 19536 KB Output is correct
16 Correct 4 ms 19536 KB Output is correct
17 Correct 4 ms 19536 KB Output is correct
18 Correct 3 ms 19536 KB Output is correct
19 Correct 4 ms 19708 KB Output is correct
20 Correct 3 ms 19536 KB Output is correct
21 Correct 4 ms 19792 KB Output is correct
22 Correct 4 ms 19792 KB Output is correct
23 Correct 4 ms 19792 KB Output is correct
24 Correct 4 ms 19752 KB Output is correct
25 Correct 5 ms 19792 KB Output is correct
26 Correct 5 ms 19792 KB Output is correct
27 Correct 4 ms 19720 KB Output is correct
28 Correct 4 ms 19792 KB Output is correct
29 Correct 4 ms 19792 KB Output is correct
30 Correct 5 ms 19756 KB Output is correct
31 Correct 4 ms 19792 KB Output is correct
32 Correct 4 ms 19896 KB Output is correct
33 Correct 4 ms 19792 KB Output is correct
34 Correct 4 ms 19792 KB Output is correct
35 Correct 4 ms 19792 KB Output is correct
36 Correct 5 ms 19792 KB Output is correct
37 Correct 5 ms 19792 KB Output is correct
38 Correct 5 ms 19804 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 19536 KB Output is correct
2 Correct 3 ms 19536 KB Output is correct
3 Correct 4 ms 19536 KB Output is correct
4 Correct 3 ms 19536 KB Output is correct
5 Correct 3 ms 19536 KB Output is correct
6 Correct 4 ms 19536 KB Output is correct
7 Correct 3 ms 19536 KB Output is correct
8 Correct 4 ms 19536 KB Output is correct
9 Correct 3 ms 19536 KB Output is correct
10 Correct 4 ms 19536 KB Output is correct
11 Correct 3 ms 19536 KB Output is correct
12 Correct 4 ms 19536 KB Output is correct
13 Correct 4 ms 19536 KB Output is correct
14 Correct 3 ms 19536 KB Output is correct
15 Correct 3 ms 19536 KB Output is correct
16 Correct 4 ms 19536 KB Output is correct
17 Correct 4 ms 19536 KB Output is correct
18 Correct 3 ms 19536 KB Output is correct
19 Correct 83 ms 38576 KB Output is correct
20 Correct 91 ms 38664 KB Output is correct
21 Correct 86 ms 38472 KB Output is correct
22 Correct 101 ms 38068 KB Output is correct
23 Correct 131 ms 47944 KB Output is correct
24 Correct 90 ms 40776 KB Output is correct
25 Correct 89 ms 39656 KB Output is correct
26 Correct 72 ms 46668 KB Output is correct
27 Correct 167 ms 46664 KB Output is correct
28 Correct 216 ms 81224 KB Output is correct
29 Correct 229 ms 79668 KB Output is correct
30 Correct 136 ms 46516 KB Output is correct
31 Correct 135 ms 46768 KB Output is correct
32 Correct 173 ms 46928 KB Output is correct
33 Correct 176 ms 50216 KB Output is correct
34 Correct 252 ms 75080 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 19536 KB Output is correct
2 Correct 3 ms 19536 KB Output is correct
3 Correct 4 ms 19536 KB Output is correct
4 Correct 3 ms 19536 KB Output is correct
5 Correct 3 ms 19536 KB Output is correct
6 Correct 4 ms 19536 KB Output is correct
7 Correct 3 ms 19536 KB Output is correct
8 Correct 4 ms 19536 KB Output is correct
9 Correct 3 ms 19536 KB Output is correct
10 Correct 4 ms 19536 KB Output is correct
11 Correct 3 ms 19536 KB Output is correct
12 Correct 4 ms 19536 KB Output is correct
13 Correct 4 ms 19536 KB Output is correct
14 Correct 3 ms 19536 KB Output is correct
15 Correct 3 ms 19536 KB Output is correct
16 Correct 4 ms 19536 KB Output is correct
17 Correct 4 ms 19536 KB Output is correct
18 Correct 3 ms 19536 KB Output is correct
19 Correct 4 ms 19708 KB Output is correct
20 Correct 3 ms 19536 KB Output is correct
21 Correct 4 ms 19792 KB Output is correct
22 Correct 4 ms 19792 KB Output is correct
23 Correct 4 ms 19792 KB Output is correct
24 Correct 4 ms 19752 KB Output is correct
25 Correct 5 ms 19792 KB Output is correct
26 Correct 5 ms 19792 KB Output is correct
27 Correct 4 ms 19720 KB Output is correct
28 Correct 4 ms 19792 KB Output is correct
29 Correct 4 ms 19792 KB Output is correct
30 Correct 5 ms 19756 KB Output is correct
31 Correct 4 ms 19792 KB Output is correct
32 Correct 4 ms 19896 KB Output is correct
33 Correct 4 ms 19792 KB Output is correct
34 Correct 4 ms 19792 KB Output is correct
35 Correct 4 ms 19792 KB Output is correct
36 Correct 5 ms 19792 KB Output is correct
37 Correct 5 ms 19792 KB Output is correct
38 Correct 5 ms 19804 KB Output is correct
39 Correct 83 ms 38576 KB Output is correct
40 Correct 91 ms 38664 KB Output is correct
41 Correct 86 ms 38472 KB Output is correct
42 Correct 101 ms 38068 KB Output is correct
43 Correct 131 ms 47944 KB Output is correct
44 Correct 90 ms 40776 KB Output is correct
45 Correct 89 ms 39656 KB Output is correct
46 Correct 72 ms 46668 KB Output is correct
47 Correct 167 ms 46664 KB Output is correct
48 Correct 216 ms 81224 KB Output is correct
49 Correct 229 ms 79668 KB Output is correct
50 Correct 136 ms 46516 KB Output is correct
51 Correct 135 ms 46768 KB Output is correct
52 Correct 173 ms 46928 KB Output is correct
53 Correct 176 ms 50216 KB Output is correct
54 Correct 252 ms 75080 KB Output is correct
55 Correct 14 ms 22096 KB Output is correct
56 Correct 8 ms 21072 KB Output is correct
57 Correct 55 ms 36552 KB Output is correct
58 Correct 37 ms 31420 KB Output is correct
59 Correct 72 ms 51272 KB Output is correct
60 Correct 200 ms 79944 KB Output is correct
61 Correct 159 ms 49392 KB Output is correct
62 Correct 169 ms 46636 KB Output is correct
63 Correct 155 ms 46664 KB Output is correct
64 Correct 362 ms 88136 KB Output is correct
65 Correct 337 ms 86884 KB Output is correct
66 Correct 242 ms 76172 KB Output is correct
67 Correct 111 ms 43192 KB Output is correct
68 Correct 271 ms 59572 KB Output is correct
69 Correct 299 ms 63412 KB Output is correct
70 Correct 246 ms 58196 KB Output is correct