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Submission #44124

# Submission time Handle Problem Language Result Execution time Memory
44124 2018-03-30T05:54:01 Z ShadowLight Paprike (COI18_paprike) C++14
100 / 100
 111 ms 16204 KB 
#include <bits/stdc++.h>
#define ll long long

#define TASKNAME ""

using namespace std;

const int INF = 1e9 + 7;
const int MAXN = 1e6 + 7;
const double EPS = 1e-8;

int n, k;
vector <vector <int> > gr;
vector <int> w;

int res = 0;

int dfs(int v, int p) {
    if (p != -1 && gr[v].size() == 1) {
        return w[v];
    }
    int sum = w[v];
    vector <int> all;
    for (int u : gr[v]) {
        if (u == p) continue;
        all.push_back(dfs(u, v));
    }
    sort(all.begin(), all.end());
    for (int i = 0; i < (int) all.size(); i++) {
        if (sum + all[i] > k) {
            res += (int) all.size() - i;
            break;
        }
        sum += all[i];
    }
    //cout << res << " " << sum << "\n";
    return sum;
}

int main() {
    #ifdef MY
        freopen("input.txt", "r", stdin);
        //freopen("output.txt", "w", stdout);
    #else
        //freopen(TASKNAME".in", "r", stdin);
        //freopen(TASKNAME".out", "w", stdout);
        ios_base::sync_with_stdio(false);
        cin.tie(0);
        cout.tie(0);
    #endif // MY
    cin >> n >> k;
    gr.resize(n);
    w.resize(n);
    for (int i = 0; i < n; i++) {
        cin >> w[i];
    }
    for (int i = 1; i < n; i++) {
        int v, u;
        cin >> v >> u;
        v--, u--;
        gr[v].push_back(u);
        gr[u].push_back(v);
    }
    dfs(0, -1);
    res++;
    cout << res - 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 576 KB Output is correct
4 Correct 2 ms 580 KB Output is correct
5 Correct 2 ms 648 KB Output is correct
6 Correct 2 ms 656 KB Output is correct
7 Correct 2 ms 656 KB Output is correct
8 Correct 2 ms 656 KB Output is correct
9 Correct 2 ms 656 KB Output is correct
10 Correct 2 ms 656 KB Output is correct
11 Correct 3 ms 656 KB Output is correct
12 Correct 2 ms 656 KB Output is correct
13 Correct 2 ms 656 KB Output is correct
14 Correct 2 ms 656 KB Output is correct
15 Correct 2 ms 656 KB Output is correct
16 Correct 2 ms 748 KB Output is correct
17 Correct 2 ms 748 KB Output is correct
18 Correct 2 ms 748 KB Output is correct
19 Correct 2 ms 748 KB Output is correct
20 Correct 2 ms 748 KB Output is correct
21 Correct 2 ms 748 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 16008 KB Output is correct
2 Correct 69 ms 16024 KB Output is correct
3 Correct 70 ms 16204 KB Output is correct
4 Correct 65 ms 16204 KB Output is correct
5 Correct 64 ms 16204 KB Output is correct
6 Correct 61 ms 16204 KB Output is correct
7 Correct 100 ms 16204 KB Output is correct
8 Correct 84 ms 16204 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 576 KB Output is correct
4 Correct 2 ms 580 KB Output is correct
5 Correct 2 ms 648 KB Output is correct
6 Correct 2 ms 656 KB Output is correct
7 Correct 2 ms 656 KB Output is correct
8 Correct 2 ms 656 KB Output is correct
9 Correct 2 ms 656 KB Output is correct
10 Correct 2 ms 656 KB Output is correct
11 Correct 3 ms 656 KB Output is correct
12 Correct 2 ms 656 KB Output is correct
13 Correct 2 ms 656 KB Output is correct
14 Correct 2 ms 656 KB Output is correct
15 Correct 2 ms 656 KB Output is correct
16 Correct 2 ms 748 KB Output is correct
17 Correct 2 ms 748 KB Output is correct
18 Correct 2 ms 748 KB Output is correct
19 Correct 2 ms 748 KB Output is correct
20 Correct 2 ms 748 KB Output is correct
21 Correct 2 ms 748 KB Output is correct
22 Correct 2 ms 16204 KB Output is correct
23 Correct 3 ms 16204 KB Output is correct
24 Correct 3 ms 16204 KB Output is correct
25 Correct 3 ms 16204 KB Output is correct
26 Correct 2 ms 16204 KB Output is correct
27 Correct 3 ms 16204 KB Output is correct
28 Correct 2 ms 16204 KB Output is correct
29 Correct 3 ms 16204 KB Output is correct
30 Correct 2 ms 16204 KB Output is correct
31 Correct 2 ms 16204 KB Output is correct
32 Correct 3 ms 16204 KB Output is correct
33 Correct 2 ms 16204 KB Output is correct
34 Correct 2 ms 16204 KB Output is correct
35 Correct 2 ms 16204 KB Output is correct
36 Correct 2 ms 16204 KB Output is correct
37 Correct 2 ms 16204 KB Output is correct
38 Correct 2 ms 16204 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 576 KB Output is correct
4 Correct 2 ms 580 KB Output is correct
5 Correct 2 ms 648 KB Output is correct
6 Correct 2 ms 656 KB Output is correct
7 Correct 2 ms 656 KB Output is correct
8 Correct 2 ms 656 KB Output is correct
9 Correct 2 ms 656 KB Output is correct
10 Correct 2 ms 656 KB Output is correct
11 Correct 3 ms 656 KB Output is correct
12 Correct 2 ms 656 KB Output is correct
13 Correct 2 ms 656 KB Output is correct
14 Correct 2 ms 656 KB Output is correct
15 Correct 2 ms 656 KB Output is correct
16 Correct 2 ms 748 KB Output is correct
17 Correct 2 ms 748 KB Output is correct
18 Correct 2 ms 748 KB Output is correct
19 Correct 2 ms 748 KB Output is correct
20 Correct 2 ms 748 KB Output is correct
21 Correct 2 ms 748 KB Output is correct
22 Correct 61 ms 16008 KB Output is correct
23 Correct 69 ms 16024 KB Output is correct
24 Correct 70 ms 16204 KB Output is correct
25 Correct 65 ms 16204 KB Output is correct
26 Correct 64 ms 16204 KB Output is correct
27 Correct 61 ms 16204 KB Output is correct
28 Correct 100 ms 16204 KB Output is correct
29 Correct 84 ms 16204 KB Output is correct
30 Correct 2 ms 16204 KB Output is correct
31 Correct 3 ms 16204 KB Output is correct
32 Correct 3 ms 16204 KB Output is correct
33 Correct 3 ms 16204 KB Output is correct
34 Correct 2 ms 16204 KB Output is correct
35 Correct 3 ms 16204 KB Output is correct
36 Correct 2 ms 16204 KB Output is correct
37 Correct 3 ms 16204 KB Output is correct
38 Correct 2 ms 16204 KB Output is correct
39 Correct 2 ms 16204 KB Output is correct
40 Correct 3 ms 16204 KB Output is correct
41 Correct 2 ms 16204 KB Output is correct
42 Correct 2 ms 16204 KB Output is correct
43 Correct 2 ms 16204 KB Output is correct
44 Correct 2 ms 16204 KB Output is correct
45 Correct 2 ms 16204 KB Output is correct
46 Correct 2 ms 16204 KB Output is correct
47 Correct 63 ms 16204 KB Output is correct
48 Correct 62 ms 16204 KB Output is correct
49 Correct 68 ms 16204 KB Output is correct
50 Correct 64 ms 16204 KB Output is correct
51 Correct 79 ms 16204 KB Output is correct
52 Correct 86 ms 16204 KB Output is correct
53 Correct 111 ms 16204 KB Output is correct
54 Correct 79 ms 16204 KB Output is correct
55 Correct 76 ms 16204 KB Output is correct
56 Correct 77 ms 16204 KB Output is correct
57 Correct 51 ms 16204 KB Output is correct