oj.uz

답안 #900599

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
900599 2024-01-08T15:40:14 Z mayankfrost 경주 (Race) (IOI11_race) C++17
100 / 100
 283 ms 39076 KB 
#include <bits/stdc++.h>

using namespace std;

typedef int ll;
typedef vector<ll> vll;
typedef pair<ll, ll> pll;
typedef vector<pll> vpll;
typedef map<ll, ll> mll;

#define N 200'005
#define L 1'000'005
#define MOD 1000000007
#define FOR(i, n) for (i = 0; i < n; i++)
#define FORR(i, a, b) for (i = a; i <= b; i++)
#define FASTIO                        \
    ios_base::sync_with_stdio(false); \
    cin.tie(NULL);
#define FREOPEN                        \
    freopen("yinyang.in", "r", stdin); \
    freopen("yinyang.out", "w", stdout);
#define gohome      \
    cout << "NO\n"; \
    return;
#define arprt(x)           \
    for (auto it : x)      \
        cout << it << " "; \
    cout << "\n";

void solve();

vpll edges[N];
vll torem;
ll sz[N], maxd, l, ans, cnt[L];
bool rem[N], calc;

const int BUF = 100'001;

ll find_sz(ll v, ll p)
{
    sz[v] = 1;
    for (auto [it, x] : edges[v])
        if (it != p && !rem[it])
            sz[v] += find_sz(it, v);
    return sz[v];
}

ll get_centroid(ll v, ll p, ll trsz)
{
    for (auto [it, x] : edges[v])
        if (it != p && !rem[it] && sz[it] * 2 > trsz)
            return get_centroid(it, v, trsz);
    return v;
}

void process(ll v, ll p, ll s, ll d)
{
    if (s > l)
        return;
    torem.push_back(s);
    if (calc)
    {
        if (cnt[l - s] < INT_MAX)
            ans = min(ans, d + cnt[l - s]);
    }
    else
        cnt[s] = min(cnt[s], d);
    for (auto [u, c] : edges[v])
    {
        if (u == p || rem[u])
            continue;
        process(u, v, s + c, d + 1);
    }
}

void centroid_decomp(ll v)
{
    ll centroid = get_centroid(v, -1, find_sz(v, -1));
    rem[centroid] = true;
    for (auto [u, c] : edges[centroid])
    {
        if (rem[u])
            continue;
        calc = true;
        process(u, -1, c, 1);
        calc = false;
        process(u, -1, c, 1);
    }
    for (auto it : torem)
        cnt[it] = INT_MAX;
    torem.clear();
    for (auto [it, x] : edges[centroid])
        if (!rem[it])
            centroid_decomp(it);
}

int best_path(int n, int K, int H[][2], int *cost)
{
    l = K;
    int u, v, c;
    for (int i = 0; i < n - 1; i++)
    {
        u = H[i][0], v = H[i][1], c = cost[i];
        edges[u].push_back({v, c});
        edges[v].push_back({u, c});
    }
    for (int i = 1; i < L; i++)
        cnt[i] = INT_MAX;
    ans = INT_MAX;
    centroid_decomp(0);
    if (ans == INT_MAX)
        ans = -1;
    return ans;
}

// int main()
// {
//     int n = 4, k = 3;
//     int H[3][2] = {{0, 1}, {1, 2}, {1, 3}};
//     int *cost = new int[3];
//     cost[0] = 1;
//     cost[1] = 2;
//     cost[2] = 4;
//     cout << best_path(n, k, H, cost);
// }

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 13656 KB Output is correct
2 Correct 3 ms 13660 KB Output is correct
3 Correct 3 ms 13660 KB Output is correct
4 Correct 3 ms 13672 KB Output is correct
5 Correct 3 ms 13660 KB Output is correct
6 Correct 3 ms 13660 KB Output is correct
7 Correct 3 ms 13660 KB Output is correct
8 Correct 3 ms 13660 KB Output is correct
9 Correct 3 ms 13660 KB Output is correct
10 Correct 3 ms 13660 KB Output is correct
11 Correct 3 ms 13656 KB Output is correct
12 Correct 3 ms 13660 KB Output is correct
13 Correct 3 ms 13652 KB Output is correct
14 Correct 3 ms 13656 KB Output is correct
15 Correct 3 ms 13656 KB Output is correct
16 Correct 4 ms 13896 KB Output is correct
17 Correct 3 ms 13660 KB Output is correct
18 Correct 3 ms 13660 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 13656 KB Output is correct
2 Correct 3 ms 13660 KB Output is correct
3 Correct 3 ms 13660 KB Output is correct
4 Correct 3 ms 13672 KB Output is correct
5 Correct 3 ms 13660 KB Output is correct
6 Correct 3 ms 13660 KB Output is correct
7 Correct 3 ms 13660 KB Output is correct
8 Correct 3 ms 13660 KB Output is correct
9 Correct 3 ms 13660 KB Output is correct
10 Correct 3 ms 13660 KB Output is correct
11 Correct 3 ms 13656 KB Output is correct
12 Correct 3 ms 13660 KB Output is correct
13 Correct 3 ms 13652 KB Output is correct
14 Correct 3 ms 13656 KB Output is correct
15 Correct 3 ms 13656 KB Output is correct
16 Correct 4 ms 13896 KB Output is correct
17 Correct 3 ms 13660 KB Output is correct
18 Correct 3 ms 13660 KB Output is correct
19 Correct 3 ms 13656 KB Output is correct
20 Correct 3 ms 13660 KB Output is correct
21 Correct 3 ms 13660 KB Output is correct
22 Correct 3 ms 13660 KB Output is correct
23 Correct 3 ms 13724 KB Output is correct
24 Correct 3 ms 13660 KB Output is correct
25 Correct 3 ms 13660 KB Output is correct
26 Correct 3 ms 13656 KB Output is correct
27 Correct 3 ms 13656 KB Output is correct
28 Correct 3 ms 13660 KB Output is correct
29 Correct 3 ms 13656 KB Output is correct
30 Correct 3 ms 13660 KB Output is correct
31 Correct 3 ms 13656 KB Output is correct
32 Correct 3 ms 13660 KB Output is correct
33 Correct 3 ms 13660 KB Output is correct
34 Correct 3 ms 13668 KB Output is correct
35 Correct 4 ms 13660 KB Output is correct
36 Correct 3 ms 13660 KB Output is correct
37 Correct 3 ms 13660 KB Output is correct
38 Correct 3 ms 13660 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 13656 KB Output is correct
2 Correct 3 ms 13660 KB Output is correct
3 Correct 3 ms 13660 KB Output is correct
4 Correct 3 ms 13672 KB Output is correct
5 Correct 3 ms 13660 KB Output is correct
6 Correct 3 ms 13660 KB Output is correct
7 Correct 3 ms 13660 KB Output is correct
8 Correct 3 ms 13660 KB Output is correct
9 Correct 3 ms 13660 KB Output is correct
10 Correct 3 ms 13660 KB Output is correct
11 Correct 3 ms 13656 KB Output is correct
12 Correct 3 ms 13660 KB Output is correct
13 Correct 3 ms 13652 KB Output is correct
14 Correct 3 ms 13656 KB Output is correct
15 Correct 3 ms 13656 KB Output is correct
16 Correct 4 ms 13896 KB Output is correct
17 Correct 3 ms 13660 KB Output is correct
18 Correct 3 ms 13660 KB Output is correct
19 Correct 79 ms 21364 KB Output is correct
20 Correct 78 ms 21108 KB Output is correct
21 Correct 85 ms 21332 KB Output is correct
22 Correct 73 ms 21960 KB Output is correct
23 Correct 48 ms 21220 KB Output is correct
24 Correct 38 ms 20984 KB Output is correct
25 Correct 77 ms 23632 KB Output is correct
26 Correct 69 ms 27652 KB Output is correct
27 Correct 104 ms 26452 KB Output is correct
28 Correct 152 ms 37604 KB Output is correct
29 Correct 153 ms 36604 KB Output is correct
30 Correct 113 ms 26228 KB Output is correct
31 Correct 110 ms 26412 KB Output is correct
32 Correct 117 ms 26416 KB Output is correct
33 Correct 136 ms 25336 KB Output is correct
34 Correct 110 ms 25936 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 13656 KB Output is correct
2 Correct 3 ms 13660 KB Output is correct
3 Correct 3 ms 13660 KB Output is correct
4 Correct 3 ms 13672 KB Output is correct
5 Correct 3 ms 13660 KB Output is correct
6 Correct 3 ms 13660 KB Output is correct
7 Correct 3 ms 13660 KB Output is correct
8 Correct 3 ms 13660 KB Output is correct
9 Correct 3 ms 13660 KB Output is correct
10 Correct 3 ms 13660 KB Output is correct
11 Correct 3 ms 13656 KB Output is correct
12 Correct 3 ms 13660 KB Output is correct
13 Correct 3 ms 13652 KB Output is correct
14 Correct 3 ms 13656 KB Output is correct
15 Correct 3 ms 13656 KB Output is correct
16 Correct 4 ms 13896 KB Output is correct
17 Correct 3 ms 13660 KB Output is correct
18 Correct 3 ms 13660 KB Output is correct
19 Correct 3 ms 13656 KB Output is correct
20 Correct 3 ms 13660 KB Output is correct
21 Correct 3 ms 13660 KB Output is correct
22 Correct 3 ms 13660 KB Output is correct
23 Correct 3 ms 13724 KB Output is correct
24 Correct 3 ms 13660 KB Output is correct
25 Correct 3 ms 13660 KB Output is correct
26 Correct 3 ms 13656 KB Output is correct
27 Correct 3 ms 13656 KB Output is correct
28 Correct 3 ms 13660 KB Output is correct
29 Correct 3 ms 13656 KB Output is correct
30 Correct 3 ms 13660 KB Output is correct
31 Correct 3 ms 13656 KB Output is correct
32 Correct 3 ms 13660 KB Output is correct
33 Correct 3 ms 13660 KB Output is correct
34 Correct 3 ms 13668 KB Output is correct
35 Correct 4 ms 13660 KB Output is correct
36 Correct 3 ms 13660 KB Output is correct
37 Correct 3 ms 13660 KB Output is correct
38 Correct 3 ms 13660 KB Output is correct
39 Correct 79 ms 21364 KB Output is correct
40 Correct 78 ms 21108 KB Output is correct
41 Correct 85 ms 21332 KB Output is correct
42 Correct 73 ms 21960 KB Output is correct
43 Correct 48 ms 21220 KB Output is correct
44 Correct 38 ms 20984 KB Output is correct
45 Correct 77 ms 23632 KB Output is correct
46 Correct 69 ms 27652 KB Output is correct
47 Correct 104 ms 26452 KB Output is correct
48 Correct 152 ms 37604 KB Output is correct
49 Correct 153 ms 36604 KB Output is correct
50 Correct 113 ms 26228 KB Output is correct
51 Correct 110 ms 26412 KB Output is correct
52 Correct 117 ms 26416 KB Output is correct
53 Correct 136 ms 25336 KB Output is correct
54 Correct 110 ms 25936 KB Output is correct
55 Correct 9 ms 14168 KB Output is correct
56 Correct 9 ms 14176 KB Output is correct
57 Correct 55 ms 22044 KB Output is correct
58 Correct 30 ms 22364 KB Output is correct
59 Correct 72 ms 27580 KB Output is correct
60 Correct 246 ms 39076 KB Output is correct
61 Correct 112 ms 26968 KB Output is correct
62 Correct 127 ms 29640 KB Output is correct
63 Correct 147 ms 28616 KB Output is correct
64 Correct 283 ms 28616 KB Output is correct
65 Correct 119 ms 27224 KB Output is correct
66 Correct 211 ms 34900 KB Output is correct
67 Correct 71 ms 30040 KB Output is correct
68 Correct 160 ms 28364 KB Output is correct
69 Correct 145 ms 28368 KB Output is correct
70 Correct 137 ms 27756 KB Output is correct