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Submission #766570

# Submission time Handle Problem Language Result Execution time Memory
766570 2023-06-25T22:45:59 Z Mahmoud_Atia Race (IOI11_race) C++14
100 / 100
 347 ms 52064 KB 
#include <iostream>
#include <vector>
#include "race.h"
using namespace std;

const int N = 1e6 + 5, M = 1e6 + 5;

int t, n, m, k, a[N], sz[N], tmp[N], mx, l[N], r[N];
vector<pair<int, int>> v[N];
bool vis[N];
int ans = 1e9;

int get_subtree_sizes(int node, int p = -1) {
    sz[node] = 1;
    for (auto x:v[node]) if (x.first != p && !vis[x.first]) sz[node] += get_subtree_sizes(x.first, node);
    return sz[node];
}

int get_centroid(int node, int size, int p = -1) {
    for (auto x:v[node]) {
        if (x.first == p || vis[x.first]) continue;
        if (sz[x.first] >= size) return get_centroid(x.first, size, node);
    }
    return node;
}



void get_cnt(int node, int p, int yes, int sum, int level) {
    if (sum > k) return;
    if (sum == k) ans = min(ans, level);
    if (yes == 1) tmp[sum] = min(tmp[sum], level);
    else if (yes) tmp[sum] = 1e9;
    else ans = min(ans, level + tmp[k - sum]);
    for (auto x:v[node]) if (x.first != p && !vis[x.first]) get_cnt(x.first, node, yes, sum + x.second, level + 1);
}

void centroid_decomp(int node = 0) {
    get_subtree_sizes(node);
    int c = get_centroid(node, sz[node] / 2);
    vis[c] = 1;
    mx = 0;
    for (auto x:v[c]) if (!vis[x.first]) get_cnt(x.first, c, 0, x.second, 1), get_cnt(x.first, c, 1, x.second, 1);
    for (auto x:v[c]) if (!vis[x.first]) get_cnt(x.first, c, 2, x.second, 1);
    for (auto x:v[c]) if (!vis[x.first]) centroid_decomp(x.first);
}


int best_path(int N, int K, int H[][2], int L[]) {
    fill(tmp, tmp + 1000000 + 5, 1e9);
    n = N, k = K;
    for (int i = 0; i < n-1; i++) {
        v[H[i][1]].push_back({H[i][0], L[i]});
        v[H[i][0]].push_back({H[i][1], L[i]});
    }
    centroid_decomp();
    return (ans == 1e9 ? -1 : ans);
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 27732 KB Output is correct
2 Correct 17 ms 27684 KB Output is correct
3 Correct 15 ms 27640 KB Output is correct
4 Correct 15 ms 27708 KB Output is correct
5 Correct 14 ms 27732 KB Output is correct
6 Correct 17 ms 27668 KB Output is correct
7 Correct 15 ms 27732 KB Output is correct
8 Correct 15 ms 27648 KB Output is correct
9 Correct 14 ms 27636 KB Output is correct
10 Correct 15 ms 27632 KB Output is correct
11 Correct 14 ms 27640 KB Output is correct
12 Correct 14 ms 27728 KB Output is correct
13 Correct 14 ms 27652 KB Output is correct
14 Correct 14 ms 27636 KB Output is correct
15 Correct 15 ms 27732 KB Output is correct
16 Correct 15 ms 27632 KB Output is correct
17 Correct 14 ms 27732 KB Output is correct
18 Correct 15 ms 27636 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 27732 KB Output is correct
2 Correct 17 ms 27684 KB Output is correct
3 Correct 15 ms 27640 KB Output is correct
4 Correct 15 ms 27708 KB Output is correct
5 Correct 14 ms 27732 KB Output is correct
6 Correct 17 ms 27668 KB Output is correct
7 Correct 15 ms 27732 KB Output is correct
8 Correct 15 ms 27648 KB Output is correct
9 Correct 14 ms 27636 KB Output is correct
10 Correct 15 ms 27632 KB Output is correct
11 Correct 14 ms 27640 KB Output is correct
12 Correct 14 ms 27728 KB Output is correct
13 Correct 14 ms 27652 KB Output is correct
14 Correct 14 ms 27636 KB Output is correct
15 Correct 15 ms 27732 KB Output is correct
16 Correct 15 ms 27632 KB Output is correct
17 Correct 14 ms 27732 KB Output is correct
18 Correct 15 ms 27636 KB Output is correct
19 Correct 13 ms 27640 KB Output is correct
20 Correct 13 ms 27732 KB Output is correct
21 Correct 14 ms 27772 KB Output is correct
22 Correct 14 ms 27732 KB Output is correct
23 Correct 15 ms 27732 KB Output is correct
24 Correct 14 ms 27732 KB Output is correct
25 Correct 15 ms 27732 KB Output is correct
26 Correct 15 ms 27776 KB Output is correct
27 Correct 15 ms 27692 KB Output is correct
28 Correct 16 ms 27732 KB Output is correct
29 Correct 15 ms 27732 KB Output is correct
30 Correct 15 ms 27772 KB Output is correct
31 Correct 15 ms 27684 KB Output is correct
32 Correct 15 ms 27732 KB Output is correct
33 Correct 16 ms 27732 KB Output is correct
34 Correct 15 ms 27760 KB Output is correct
35 Correct 15 ms 27732 KB Output is correct
36 Correct 16 ms 27732 KB Output is correct
37 Correct 15 ms 27796 KB Output is correct
38 Correct 16 ms 27732 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 27732 KB Output is correct
2 Correct 17 ms 27684 KB Output is correct
3 Correct 15 ms 27640 KB Output is correct
4 Correct 15 ms 27708 KB Output is correct
5 Correct 14 ms 27732 KB Output is correct
6 Correct 17 ms 27668 KB Output is correct
7 Correct 15 ms 27732 KB Output is correct
8 Correct 15 ms 27648 KB Output is correct
9 Correct 14 ms 27636 KB Output is correct
10 Correct 15 ms 27632 KB Output is correct
11 Correct 14 ms 27640 KB Output is correct
12 Correct 14 ms 27728 KB Output is correct
13 Correct 14 ms 27652 KB Output is correct
14 Correct 14 ms 27636 KB Output is correct
15 Correct 15 ms 27732 KB Output is correct
16 Correct 15 ms 27632 KB Output is correct
17 Correct 14 ms 27732 KB Output is correct
18 Correct 15 ms 27636 KB Output is correct
19 Correct 107 ms 34384 KB Output is correct
20 Correct 109 ms 34384 KB Output is correct
21 Correct 112 ms 34412 KB Output is correct
22 Correct 102 ms 34384 KB Output is correct
23 Correct 66 ms 34724 KB Output is correct
24 Correct 54 ms 34508 KB Output is correct
25 Correct 106 ms 37036 KB Output is correct
26 Correct 90 ms 40012 KB Output is correct
27 Correct 138 ms 40820 KB Output is correct
28 Correct 175 ms 52064 KB Output is correct
29 Correct 180 ms 51164 KB Output is correct
30 Correct 123 ms 40864 KB Output is correct
31 Correct 132 ms 40852 KB Output is correct
32 Correct 143 ms 40820 KB Output is correct
33 Correct 161 ms 39668 KB Output is correct
34 Correct 132 ms 39620 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 27732 KB Output is correct
2 Correct 17 ms 27684 KB Output is correct
3 Correct 15 ms 27640 KB Output is correct
4 Correct 15 ms 27708 KB Output is correct
5 Correct 14 ms 27732 KB Output is correct
6 Correct 17 ms 27668 KB Output is correct
7 Correct 15 ms 27732 KB Output is correct
8 Correct 15 ms 27648 KB Output is correct
9 Correct 14 ms 27636 KB Output is correct
10 Correct 15 ms 27632 KB Output is correct
11 Correct 14 ms 27640 KB Output is correct
12 Correct 14 ms 27728 KB Output is correct
13 Correct 14 ms 27652 KB Output is correct
14 Correct 14 ms 27636 KB Output is correct
15 Correct 15 ms 27732 KB Output is correct
16 Correct 15 ms 27632 KB Output is correct
17 Correct 14 ms 27732 KB Output is correct
18 Correct 15 ms 27636 KB Output is correct
19 Correct 13 ms 27640 KB Output is correct
20 Correct 13 ms 27732 KB Output is correct
21 Correct 14 ms 27772 KB Output is correct
22 Correct 14 ms 27732 KB Output is correct
23 Correct 15 ms 27732 KB Output is correct
24 Correct 14 ms 27732 KB Output is correct
25 Correct 15 ms 27732 KB Output is correct
26 Correct 15 ms 27776 KB Output is correct
27 Correct 15 ms 27692 KB Output is correct
28 Correct 16 ms 27732 KB Output is correct
29 Correct 15 ms 27732 KB Output is correct
30 Correct 15 ms 27772 KB Output is correct
31 Correct 15 ms 27684 KB Output is correct
32 Correct 15 ms 27732 KB Output is correct
33 Correct 16 ms 27732 KB Output is correct
34 Correct 15 ms 27760 KB Output is correct
35 Correct 15 ms 27732 KB Output is correct
36 Correct 16 ms 27732 KB Output is correct
37 Correct 15 ms 27796 KB Output is correct
38 Correct 16 ms 27732 KB Output is correct
39 Correct 107 ms 34384 KB Output is correct
40 Correct 109 ms 34384 KB Output is correct
41 Correct 112 ms 34412 KB Output is correct
42 Correct 102 ms 34384 KB Output is correct
43 Correct 66 ms 34724 KB Output is correct
44 Correct 54 ms 34508 KB Output is correct
45 Correct 106 ms 37036 KB Output is correct
46 Correct 90 ms 40012 KB Output is correct
47 Correct 138 ms 40820 KB Output is correct
48 Correct 175 ms 52064 KB Output is correct
49 Correct 180 ms 51164 KB Output is correct
50 Correct 123 ms 40864 KB Output is correct
51 Correct 132 ms 40852 KB Output is correct
52 Correct 143 ms 40820 KB Output is correct
53 Correct 161 ms 39668 KB Output is correct
54 Correct 132 ms 39620 KB Output is correct
55 Correct 20 ms 28416 KB Output is correct
56 Correct 21 ms 28260 KB Output is correct
57 Correct 68 ms 34524 KB Output is correct
58 Correct 40 ms 34368 KB Output is correct
59 Correct 90 ms 40052 KB Output is correct
60 Correct 322 ms 51400 KB Output is correct
61 Correct 136 ms 40880 KB Output is correct
62 Correct 177 ms 40784 KB Output is correct
63 Correct 186 ms 40784 KB Output is correct
64 Correct 347 ms 40712 KB Output is correct
65 Correct 146 ms 40792 KB Output is correct
66 Correct 269 ms 48972 KB Output is correct
67 Correct 85 ms 41108 KB Output is correct
68 Correct 190 ms 41048 KB Output is correct
69 Correct 186 ms 41036 KB Output is correct
70 Correct 168 ms 40624 KB Output is correct