oj.uz

Submission #374248

# Submission time Handle Problem Language Result Execution time Memory
374248 2021-03-07T00:51:51 Z ijxjdjd Race (IOI11_race) C++14
100 / 100
 568 ms 89116 KB 
#include "race.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int MAXN = (int)(2e5 + 5);
ll K;
vector<pair<int, int>> adj[MAXN];
struct paths {
    ll addL = 0;
    int addV = 0;
    unordered_map<ll, int> mn;
    paths() {
        mn[0] = 0;
    }
    bool contains(ll a) {
        return mn.count(a-addL);
    }
    int get(ll a) {
        if (!contains(a)) {
            return 2*MAXN;
        }
        return mn[a-addL] + addV;
    }
    void insert(ll v, int cnt) {
        if(get(v) > cnt) {
            mn[v-addL] = cnt-addV;
        }
    }
    int size() {
        return mn.size();
    }
};
paths keep[MAXN];
int res = MAXN;
void dfs(int n, int p) {
    for (auto& e : adj[n]) {
        if (e.first != p) {
            dfs(e.first, n);
            keep[e.first].addL += e.second;
            keep[e.first].addV++;
            if (keep[n].size() < keep[e.first].size()) {
                swap(keep[e.first], keep[n]);
            }
            for (auto& keypair : keep[e.first].mn) {
                ll od = keypair.first + keep[e.first].addL;
                if (keep[n].contains(K-od)) {
                    res = min(keypair.second + keep[e.first].addV + keep[n].get(K-od), res);
                }
            }
            for (auto& keypair : keep[e.first].mn) {
                keep[n].insert(keypair.first + keep[e.first].addL, keypair.second + keep[e.first].addV);
            }
        }
    }
}
int best_path(int N, int k, int H[][2], int L[])
{
    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]});
    }
    K = k;
    dfs(0, 0);
    return (res == MAXN ? -1 : res);
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 31724 KB Output is correct
2 Correct 49 ms 31724 KB Output is correct
3 Correct 48 ms 31724 KB Output is correct
4 Correct 47 ms 31724 KB Output is correct
5 Correct 47 ms 31724 KB Output is correct
6 Correct 49 ms 31724 KB Output is correct
7 Correct 49 ms 31724 KB Output is correct
8 Correct 48 ms 31724 KB Output is correct
9 Correct 48 ms 31724 KB Output is correct
10 Correct 49 ms 31724 KB Output is correct
11 Correct 49 ms 31724 KB Output is correct
12 Correct 48 ms 31724 KB Output is correct
13 Correct 48 ms 31724 KB Output is correct
14 Correct 48 ms 31724 KB Output is correct
15 Correct 47 ms 31724 KB Output is correct
16 Correct 47 ms 31724 KB Output is correct
17 Correct 47 ms 31724 KB Output is correct
18 Correct 48 ms 31724 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 31724 KB Output is correct
2 Correct 49 ms 31724 KB Output is correct
3 Correct 48 ms 31724 KB Output is correct
4 Correct 47 ms 31724 KB Output is correct
5 Correct 47 ms 31724 KB Output is correct
6 Correct 49 ms 31724 KB Output is correct
7 Correct 49 ms 31724 KB Output is correct
8 Correct 48 ms 31724 KB Output is correct
9 Correct 48 ms 31724 KB Output is correct
10 Correct 49 ms 31724 KB Output is correct
11 Correct 49 ms 31724 KB Output is correct
12 Correct 48 ms 31724 KB Output is correct
13 Correct 48 ms 31724 KB Output is correct
14 Correct 48 ms 31724 KB Output is correct
15 Correct 47 ms 31724 KB Output is correct
16 Correct 47 ms 31724 KB Output is correct
17 Correct 47 ms 31724 KB Output is correct
18 Correct 48 ms 31724 KB Output is correct
19 Correct 50 ms 31724 KB Output is correct
20 Correct 48 ms 31596 KB Output is correct
21 Correct 48 ms 31724 KB Output is correct
22 Correct 49 ms 31852 KB Output is correct
23 Correct 49 ms 31852 KB Output is correct
24 Correct 49 ms 31852 KB Output is correct
25 Correct 52 ms 31852 KB Output is correct
26 Correct 49 ms 31852 KB Output is correct
27 Correct 48 ms 31724 KB Output is correct
28 Correct 50 ms 31836 KB Output is correct
29 Correct 49 ms 31852 KB Output is correct
30 Correct 49 ms 31852 KB Output is correct
31 Correct 48 ms 31852 KB Output is correct
32 Correct 49 ms 31852 KB Output is correct
33 Correct 49 ms 31980 KB Output is correct
34 Correct 49 ms 31852 KB Output is correct
35 Correct 48 ms 31852 KB Output is correct
36 Correct 49 ms 31852 KB Output is correct
37 Correct 48 ms 31724 KB Output is correct
38 Correct 48 ms 31852 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 31724 KB Output is correct
2 Correct 49 ms 31724 KB Output is correct
3 Correct 48 ms 31724 KB Output is correct
4 Correct 47 ms 31724 KB Output is correct
5 Correct 47 ms 31724 KB Output is correct
6 Correct 49 ms 31724 KB Output is correct
7 Correct 49 ms 31724 KB Output is correct
8 Correct 48 ms 31724 KB Output is correct
9 Correct 48 ms 31724 KB Output is correct
10 Correct 49 ms 31724 KB Output is correct
11 Correct 49 ms 31724 KB Output is correct
12 Correct 48 ms 31724 KB Output is correct
13 Correct 48 ms 31724 KB Output is correct
14 Correct 48 ms 31724 KB Output is correct
15 Correct 47 ms 31724 KB Output is correct
16 Correct 47 ms 31724 KB Output is correct
17 Correct 47 ms 31724 KB Output is correct
18 Correct 48 ms 31724 KB Output is correct
19 Correct 177 ms 42660 KB Output is correct
20 Correct 178 ms 42560 KB Output is correct
21 Correct 172 ms 42432 KB Output is correct
22 Correct 177 ms 43664 KB Output is correct
23 Correct 204 ms 52588 KB Output is correct
24 Correct 160 ms 45932 KB Output is correct
25 Correct 157 ms 47852 KB Output is correct
26 Correct 113 ms 56044 KB Output is correct
27 Correct 253 ms 49004 KB Output is correct
28 Correct 348 ms 89116 KB Output is correct
29 Correct 354 ms 87256 KB Output is correct
30 Correct 256 ms 49004 KB Output is correct
31 Correct 249 ms 49132 KB Output is correct
32 Correct 330 ms 49276 KB Output is correct
33 Correct 312 ms 52144 KB Output is correct
34 Correct 502 ms 74548 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 31724 KB Output is correct
2 Correct 49 ms 31724 KB Output is correct
3 Correct 48 ms 31724 KB Output is correct
4 Correct 47 ms 31724 KB Output is correct
5 Correct 47 ms 31724 KB Output is correct
6 Correct 49 ms 31724 KB Output is correct
7 Correct 49 ms 31724 KB Output is correct
8 Correct 48 ms 31724 KB Output is correct
9 Correct 48 ms 31724 KB Output is correct
10 Correct 49 ms 31724 KB Output is correct
11 Correct 49 ms 31724 KB Output is correct
12 Correct 48 ms 31724 KB Output is correct
13 Correct 48 ms 31724 KB Output is correct
14 Correct 48 ms 31724 KB Output is correct
15 Correct 47 ms 31724 KB Output is correct
16 Correct 47 ms 31724 KB Output is correct
17 Correct 47 ms 31724 KB Output is correct
18 Correct 48 ms 31724 KB Output is correct
19 Correct 50 ms 31724 KB Output is correct
20 Correct 48 ms 31596 KB Output is correct
21 Correct 48 ms 31724 KB Output is correct
22 Correct 49 ms 31852 KB Output is correct
23 Correct 49 ms 31852 KB Output is correct
24 Correct 49 ms 31852 KB Output is correct
25 Correct 52 ms 31852 KB Output is correct
26 Correct 49 ms 31852 KB Output is correct
27 Correct 48 ms 31724 KB Output is correct
28 Correct 50 ms 31836 KB Output is correct
29 Correct 49 ms 31852 KB Output is correct
30 Correct 49 ms 31852 KB Output is correct
31 Correct 48 ms 31852 KB Output is correct
32 Correct 49 ms 31852 KB Output is correct
33 Correct 49 ms 31980 KB Output is correct
34 Correct 49 ms 31852 KB Output is correct
35 Correct 48 ms 31852 KB Output is correct
36 Correct 49 ms 31852 KB Output is correct
37 Correct 48 ms 31724 KB Output is correct
38 Correct 48 ms 31852 KB Output is correct
39 Correct 177 ms 42660 KB Output is correct
40 Correct 178 ms 42560 KB Output is correct
41 Correct 172 ms 42432 KB Output is correct
42 Correct 177 ms 43664 KB Output is correct
43 Correct 204 ms 52588 KB Output is correct
44 Correct 160 ms 45932 KB Output is correct
45 Correct 157 ms 47852 KB Output is correct
46 Correct 113 ms 56044 KB Output is correct
47 Correct 253 ms 49004 KB Output is correct
48 Correct 348 ms 89116 KB Output is correct
49 Correct 354 ms 87256 KB Output is correct
50 Correct 256 ms 49004 KB Output is correct
51 Correct 249 ms 49132 KB Output is correct
52 Correct 330 ms 49276 KB Output is correct
53 Correct 312 ms 52144 KB Output is correct
54 Correct 502 ms 74548 KB Output is correct
55 Correct 60 ms 33516 KB Output is correct
56 Correct 56 ms 32748 KB Output is correct
57 Correct 117 ms 42092 KB Output is correct
58 Correct 88 ms 37856 KB Output is correct
59 Correct 123 ms 60304 KB Output is correct
60 Correct 342 ms 87544 KB Output is correct
61 Correct 267 ms 51308 KB Output is correct
62 Correct 250 ms 49108 KB Output is correct
63 Correct 320 ms 49260 KB Output is correct
64 Correct 562 ms 86544 KB Output is correct
65 Correct 568 ms 85044 KB Output is correct
66 Correct 358 ms 82228 KB Output is correct
67 Correct 207 ms 45660 KB Output is correct
68 Correct 387 ms 61236 KB Output is correct
69 Correct 408 ms 64820 KB Output is correct
70 Correct 368 ms 60212 KB Output is correct