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Submission #561949

# Submission time Handle Problem Language Result Execution time Memory
561949 2022-05-13T21:13:51 Z four_specks Race (IOI11_race) C++17
100 / 100
 319 ms 69820 KB 
#include "race.h"

#include <bits/stdc++.h>

using namespace std;

namespace
{
    template <typename Fun>
    struct YCombinator
    {
        template <typename T>
        YCombinator(T &&_fun) : fun(forward<T>(_fun)) {}

        template <typename... Args>
        decltype(auto) operator()(Args &&...args) { return fun(ref(*this), forward<Args>(args)...); }

    private:
        Fun fun;
    };

    template <typename T>
    YCombinator(T &&) -> YCombinator<decay_t<T>>;

    template <typename T>
    bool ckmin(T &lhs, const T &rhs) { return rhs < lhs ? lhs = rhs, 1 : 0; }

    template <typename T>
    bool ckmax(T &lhs, const T &rhs) { return rhs > lhs ? lhs = rhs, 1 : 0; }

} // namespace

int best_path(int N, int K, int H[][2], int L[])
{
    vector<vector<pair<int, int>>> adj(N);
    for (int i = 0; i < N - 1; i++)
        adj[H[i][0]].emplace_back(H[i][1], L[i]),
        adj[H[i][1]].emplace_back(H[i][0], L[i]);

    int res = INT_MAX;

    YCombinator(
    [&](auto self, int u, int p) -> map<int, int>
    {
        map<int, int> mp;
        mp[0] = 0;
        for (auto [v, w] : adj[u])
        {
            if (v != p)
            {
                map<int, int> mp1 = self(v, u);
                mp1[mp1.begin()->first - w] = mp1.begin()->second - 1;
                if ((int)mp.size() < (int)mp1.size())
                    swap(mp, mp1);
                for (auto [x, d] : mp1)
                {
                    if (auto it = mp.find(K - x + mp1.begin()->first + mp.begin()->first); it != mp.end())
                        ckmin(res, d - mp1.begin()->second + it->second - mp.begin()->second);
                }
                for (auto [x, d] : mp1)
                    ckmin(mp.emplace(x - mp1.begin()->first + mp.begin()->first, INT_MAX).first->second, d - mp1.begin()->second + mp.begin()->second);
            }
        }

        return mp;
    })(0, -1);

    return (res != INT_MAX ? res : -1);
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 456 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 456 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 1 ms 468 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 456 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 89 ms 7552 KB Output is correct
20 Correct 77 ms 7548 KB Output is correct
21 Correct 77 ms 7460 KB Output is correct
22 Correct 77 ms 7520 KB Output is correct
23 Correct 99 ms 7828 KB Output is correct
24 Correct 80 ms 7792 KB Output is correct
25 Correct 70 ms 21952 KB Output is correct
26 Correct 58 ms 35056 KB Output is correct
27 Correct 151 ms 15164 KB Output is correct
28 Correct 239 ms 69820 KB Output is correct
29 Correct 237 ms 66996 KB Output is correct
30 Correct 155 ms 15120 KB Output is correct
31 Correct 146 ms 15136 KB Output is correct
32 Correct 171 ms 15256 KB Output is correct
33 Correct 148 ms 14592 KB Output is correct
34 Correct 241 ms 24092 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 456 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 1 ms 468 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 89 ms 7552 KB Output is correct
40 Correct 77 ms 7548 KB Output is correct
41 Correct 77 ms 7460 KB Output is correct
42 Correct 77 ms 7520 KB Output is correct
43 Correct 99 ms 7828 KB Output is correct
44 Correct 80 ms 7792 KB Output is correct
45 Correct 70 ms 21952 KB Output is correct
46 Correct 58 ms 35056 KB Output is correct
47 Correct 151 ms 15164 KB Output is correct
48 Correct 239 ms 69820 KB Output is correct
49 Correct 237 ms 66996 KB Output is correct
50 Correct 155 ms 15120 KB Output is correct
51 Correct 146 ms 15136 KB Output is correct
52 Correct 171 ms 15256 KB Output is correct
53 Correct 148 ms 14592 KB Output is correct
54 Correct 241 ms 24092 KB Output is correct
55 Correct 10 ms 1264 KB Output is correct
56 Correct 8 ms 980 KB Output is correct
57 Correct 55 ms 7756 KB Output is correct
58 Correct 49 ms 7752 KB Output is correct
59 Correct 89 ms 35104 KB Output is correct
60 Correct 222 ms 67972 KB Output is correct
61 Correct 166 ms 16332 KB Output is correct
62 Correct 151 ms 15116 KB Output is correct
63 Correct 164 ms 15332 KB Output is correct
64 Correct 312 ms 21144 KB Output is correct
65 Correct 319 ms 24328 KB Output is correct
66 Correct 227 ms 60628 KB Output is correct
67 Correct 137 ms 15164 KB Output is correct
68 Correct 240 ms 23000 KB Output is correct
69 Correct 258 ms 26504 KB Output is correct
70 Correct 217 ms 22092 KB Output is correct