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Submission #904823

# Submission time Handle Problem Language Result Execution time Memory
904823 2024-01-12T09:12:58 Z Amirreza_Fakhri Race (IOI11_race) C++17
100 / 100
 358 ms 39144 KB 
// In the name of the God 
#include <bits/stdc++.h>
#define ll long long
// #define int long long
#define pb push_back
#define F first
#define S second
#define mp make_pair
#define pii pair <int, int>
#define smin(x, y) (x) = min((x), (y))
#define smax(x, y) (x) = max((x), (y))
#define all(x) (x).begin(), (x).end()
using namespace std;

const int inf = 1e9+7;
const int mod = 998244353;
const int maxn = 2e5+5, maxk = 1e6+5;

int n, k, ans = inf, sz[maxn], mn[maxk];
bool mark[maxn];
vector <pii> adj[maxn], vec1;
vector <int> vec2;

void dfs1(int v, int p) {
    sz[v] = 1;
    for (pii e : adj[v]) {
        int u = e.F;
        if (u != p and !mark[u]) {
            dfs1(u, v); sz[v] += sz[u];
        }
    }
}

int dfs2(int v, int s, int p) {
    for (pii e : adj[v]) {
        int u = e.F;
        if (u != p and !mark[u] and sz[u] > s/2) return dfs2(u, s, v);
    }
    return v;
}

void dfs3(int v, int c, int h, int p) {
    if (c > k) return;
    vec2.pb(c); vec1.pb(mp(c, h));
    smin(ans, mn[k-c]+h);
    for (pii e : adj[v]) {
        int u = e.F;
        if (u != p and !mark[u]) dfs3(u, c+e.S, h+1, v);
    }
}

void cd(int v) {
    dfs1(v, v);
    v = dfs2(v, sz[v], v);
    mn[0] = 0; vec2.pb(0);
    for (pii e : adj[v]) {
        int u = e.F;
        if (!mark[u]) {
            dfs3(u, e.S, 1, v);
            for (pii x : vec1) smin(mn[x.F], x.S);
            vec1.clear();
        }
    }
    for (int x : vec2) mn[x] = inf;
    vec2.clear();
    mark[v] = 1;
    for (pii e : adj[v]) {
        int u = e.F;
        if (!mark[u]) cd(u);
    }
}

int best_path(int N, int K, int H[][2], int L[]) {
    n = N, k = K;
    for (int i = 0; i < n-1; i++) {
        adj[H[i][0]].pb(mp(H[i][1], L[i]));
        adj[H[i][1]].pb(mp(H[i][0], L[i]));
    }
    fill(mn, mn+maxk, inf);
    cd(0);
    return ans == inf ? -1 : ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12888 KB Output is correct
2 Correct 4 ms 12888 KB Output is correct
3 Correct 4 ms 12892 KB Output is correct
4 Correct 5 ms 12892 KB Output is correct
5 Correct 3 ms 12892 KB Output is correct
6 Correct 4 ms 12892 KB Output is correct
7 Correct 4 ms 12888 KB Output is correct
8 Correct 3 ms 12892 KB Output is correct
9 Correct 3 ms 12892 KB Output is correct
10 Correct 3 ms 12892 KB Output is correct
11 Correct 3 ms 12892 KB Output is correct
12 Correct 4 ms 12904 KB Output is correct
13 Correct 3 ms 12892 KB Output is correct
14 Correct 3 ms 12892 KB Output is correct
15 Correct 3 ms 12724 KB Output is correct
16 Correct 4 ms 12892 KB Output is correct
17 Correct 3 ms 12892 KB Output is correct
18 Correct 3 ms 12888 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12888 KB Output is correct
2 Correct 4 ms 12888 KB Output is correct
3 Correct 4 ms 12892 KB Output is correct
4 Correct 5 ms 12892 KB Output is correct
5 Correct 3 ms 12892 KB Output is correct
6 Correct 4 ms 12892 KB Output is correct
7 Correct 4 ms 12888 KB Output is correct
8 Correct 3 ms 12892 KB Output is correct
9 Correct 3 ms 12892 KB Output is correct
10 Correct 3 ms 12892 KB Output is correct
11 Correct 3 ms 12892 KB Output is correct
12 Correct 4 ms 12904 KB Output is correct
13 Correct 3 ms 12892 KB Output is correct
14 Correct 3 ms 12892 KB Output is correct
15 Correct 3 ms 12724 KB Output is correct
16 Correct 4 ms 12892 KB Output is correct
17 Correct 3 ms 12892 KB Output is correct
18 Correct 3 ms 12888 KB Output is correct
19 Correct 4 ms 12892 KB Output is correct
20 Correct 3 ms 12888 KB Output is correct
21 Correct 3 ms 12892 KB Output is correct
22 Correct 4 ms 12892 KB Output is correct
23 Correct 4 ms 12892 KB Output is correct
24 Correct 4 ms 12892 KB Output is correct
25 Correct 5 ms 12888 KB Output is correct
26 Correct 4 ms 12892 KB Output is correct
27 Correct 4 ms 12892 KB Output is correct
28 Correct 4 ms 12892 KB Output is correct
29 Correct 4 ms 12892 KB Output is correct
30 Correct 4 ms 12892 KB Output is correct
31 Correct 4 ms 13300 KB Output is correct
32 Correct 4 ms 12892 KB Output is correct
33 Correct 4 ms 12892 KB Output is correct
34 Correct 4 ms 12892 KB Output is correct
35 Correct 4 ms 12892 KB Output is correct
36 Correct 4 ms 12888 KB Output is correct
37 Correct 4 ms 12888 KB Output is correct
38 Correct 4 ms 12892 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12888 KB Output is correct
2 Correct 4 ms 12888 KB Output is correct
3 Correct 4 ms 12892 KB Output is correct
4 Correct 5 ms 12892 KB Output is correct
5 Correct 3 ms 12892 KB Output is correct
6 Correct 4 ms 12892 KB Output is correct
7 Correct 4 ms 12888 KB Output is correct
8 Correct 3 ms 12892 KB Output is correct
9 Correct 3 ms 12892 KB Output is correct
10 Correct 3 ms 12892 KB Output is correct
11 Correct 3 ms 12892 KB Output is correct
12 Correct 4 ms 12904 KB Output is correct
13 Correct 3 ms 12892 KB Output is correct
14 Correct 3 ms 12892 KB Output is correct
15 Correct 3 ms 12724 KB Output is correct
16 Correct 4 ms 12892 KB Output is correct
17 Correct 3 ms 12892 KB Output is correct
18 Correct 3 ms 12888 KB Output is correct
19 Correct 81 ms 19284 KB Output is correct
20 Correct 88 ms 19272 KB Output is correct
21 Correct 80 ms 19672 KB Output is correct
22 Correct 87 ms 20096 KB Output is correct
23 Correct 48 ms 19280 KB Output is correct
24 Correct 47 ms 19260 KB Output is correct
25 Correct 83 ms 22612 KB Output is correct
26 Correct 76 ms 27456 KB Output is correct
27 Correct 161 ms 23404 KB Output is correct
28 Correct 204 ms 37608 KB Output is correct
29 Correct 264 ms 36584 KB Output is correct
30 Correct 144 ms 23496 KB Output is correct
31 Correct 130 ms 23376 KB Output is correct
32 Correct 126 ms 23376 KB Output is correct
33 Correct 139 ms 22124 KB Output is correct
34 Correct 125 ms 22276 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12888 KB Output is correct
2 Correct 4 ms 12888 KB Output is correct
3 Correct 4 ms 12892 KB Output is correct
4 Correct 5 ms 12892 KB Output is correct
5 Correct 3 ms 12892 KB Output is correct
6 Correct 4 ms 12892 KB Output is correct
7 Correct 4 ms 12888 KB Output is correct
8 Correct 3 ms 12892 KB Output is correct
9 Correct 3 ms 12892 KB Output is correct
10 Correct 3 ms 12892 KB Output is correct
11 Correct 3 ms 12892 KB Output is correct
12 Correct 4 ms 12904 KB Output is correct
13 Correct 3 ms 12892 KB Output is correct
14 Correct 3 ms 12892 KB Output is correct
15 Correct 3 ms 12724 KB Output is correct
16 Correct 4 ms 12892 KB Output is correct
17 Correct 3 ms 12892 KB Output is correct
18 Correct 3 ms 12888 KB Output is correct
19 Correct 4 ms 12892 KB Output is correct
20 Correct 3 ms 12888 KB Output is correct
21 Correct 3 ms 12892 KB Output is correct
22 Correct 4 ms 12892 KB Output is correct
23 Correct 4 ms 12892 KB Output is correct
24 Correct 4 ms 12892 KB Output is correct
25 Correct 5 ms 12888 KB Output is correct
26 Correct 4 ms 12892 KB Output is correct
27 Correct 4 ms 12892 KB Output is correct
28 Correct 4 ms 12892 KB Output is correct
29 Correct 4 ms 12892 KB Output is correct
30 Correct 4 ms 12892 KB Output is correct
31 Correct 4 ms 13300 KB Output is correct
32 Correct 4 ms 12892 KB Output is correct
33 Correct 4 ms 12892 KB Output is correct
34 Correct 4 ms 12892 KB Output is correct
35 Correct 4 ms 12892 KB Output is correct
36 Correct 4 ms 12888 KB Output is correct
37 Correct 4 ms 12888 KB Output is correct
38 Correct 4 ms 12892 KB Output is correct
39 Correct 81 ms 19284 KB Output is correct
40 Correct 88 ms 19272 KB Output is correct
41 Correct 80 ms 19672 KB Output is correct
42 Correct 87 ms 20096 KB Output is correct
43 Correct 48 ms 19280 KB Output is correct
44 Correct 47 ms 19260 KB Output is correct
45 Correct 83 ms 22612 KB Output is correct
46 Correct 76 ms 27456 KB Output is correct
47 Correct 161 ms 23404 KB Output is correct
48 Correct 204 ms 37608 KB Output is correct
49 Correct 264 ms 36584 KB Output is correct
50 Correct 144 ms 23496 KB Output is correct
51 Correct 130 ms 23376 KB Output is correct
52 Correct 126 ms 23376 KB Output is correct
53 Correct 139 ms 22124 KB Output is correct
54 Correct 125 ms 22276 KB Output is correct
55 Correct 9 ms 13400 KB Output is correct
56 Correct 9 ms 13404 KB Output is correct
57 Correct 58 ms 20424 KB Output is correct
58 Correct 30 ms 20180 KB Output is correct
59 Correct 71 ms 27340 KB Output is correct
60 Correct 358 ms 39144 KB Output is correct
61 Correct 130 ms 23636 KB Output is correct
62 Correct 184 ms 24576 KB Output is correct
63 Correct 210 ms 24484 KB Output is correct
64 Correct 230 ms 24992 KB Output is correct
65 Correct 157 ms 23184 KB Output is correct
66 Correct 231 ms 34176 KB Output is correct
67 Correct 81 ms 25284 KB Output is correct
68 Correct 218 ms 24268 KB Output is correct
69 Correct 208 ms 24344 KB Output is correct
70 Correct 176 ms 23788 KB Output is correct