oj.uz

Submission #89289

# Submission time Handle Problem Language Result Execution time Memory
89289 2018-12-11T11:52:44 Z lost_breath Paprike (COI18_paprike) C++14
100 / 100
 118 ms 35472 KB 
// #define _GLIBCXX_DEBUG
#include <bits/stdc++.h>

#define ll long long
#define ull unsigned ll
#define pb push_back
#define mp make_pair
#define pll pair<ll, ll>
#define pii pair<int, int>
#define ld long double
#define pas(v) cout << #v << ' ' << v << endl
#define all(v) v.begin(), v.end()
#define fi first
#define se second
#define vi vector<ll>
#define vvi vector<vi>
using namespace std;

int main() {
	cout.precision(30);
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    int n, k; cin >> n >> k;
    
    vi sp(n);
    for (auto &i : sp) cin >> i;
    
    vvi g(n);
    for (int i = 0; i < n - 1; i++) {
        int a, b; cin >> a >> b;
        a--, b--;
        g[a].pb(b);
        g[b].pb(a);
    }

    function<pll(int, int)> dfs = [&](int v, int p) {
        vi have;
        ll sum = 0;
        ll ret = 0;
        for (auto u : g[v]) {
            if (u == p) continue;
            auto x = dfs(u, v);
            ll s = x.first;
            ll num = x.second;
            ret += num;
            have.pb(s);
            sum += s; 
        }
        sum += sp[v];
        if (sum <= k) return pll{sum, ret};
        sort(all(have));
        while (sum > k) {
            sum -= have.back();
            ret++;
            have.pop_back();
        }

        return pll{sum, ret};
    };

    auto res = dfs(0, -1);
    cout << res.se;

	return 0;	
}

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 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 508 KB Output is correct
5 Correct 2 ms 656 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 2 ms 656 KB Output is correct
12 Correct 2 ms 756 KB Output is correct
13 Correct 2 ms 756 KB Output is correct
14 Correct 2 ms 756 KB Output is correct
15 Correct 2 ms 756 KB Output is correct
16 Correct 2 ms 756 KB Output is correct
17 Correct 2 ms 756 KB Output is correct
18 Correct 2 ms 756 KB Output is correct
19 Correct 2 ms 756 KB Output is correct
20 Correct 2 ms 756 KB Output is correct
21 Correct 2 ms 756 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 23040 KB Output is correct
2 Correct 67 ms 24992 KB Output is correct
3 Correct 70 ms 27028 KB Output is correct
4 Correct 68 ms 28984 KB Output is correct
5 Correct 66 ms 30988 KB Output is correct
6 Correct 65 ms 32908 KB Output is correct
7 Correct 68 ms 34828 KB Output is correct
8 Correct 63 ms 35472 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 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 508 KB Output is correct
5 Correct 2 ms 656 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 2 ms 656 KB Output is correct
12 Correct 2 ms 756 KB Output is correct
13 Correct 2 ms 756 KB Output is correct
14 Correct 2 ms 756 KB Output is correct
15 Correct 2 ms 756 KB Output is correct
16 Correct 2 ms 756 KB Output is correct
17 Correct 2 ms 756 KB Output is correct
18 Correct 2 ms 756 KB Output is correct
19 Correct 2 ms 756 KB Output is correct
20 Correct 2 ms 756 KB Output is correct
21 Correct 2 ms 756 KB Output is correct
22 Correct 2 ms 35472 KB Output is correct
23 Correct 2 ms 35472 KB Output is correct
24 Correct 2 ms 35472 KB Output is correct
25 Correct 2 ms 35472 KB Output is correct
26 Correct 3 ms 35472 KB Output is correct
27 Correct 2 ms 35472 KB Output is correct
28 Correct 2 ms 35472 KB Output is correct
29 Correct 2 ms 35472 KB Output is correct
30 Correct 2 ms 35472 KB Output is correct
31 Correct 2 ms 35472 KB Output is correct
32 Correct 2 ms 35472 KB Output is correct
33 Correct 3 ms 35472 KB Output is correct
34 Correct 3 ms 35472 KB Output is correct
35 Correct 3 ms 35472 KB Output is correct
36 Correct 2 ms 35472 KB Output is correct
37 Correct 3 ms 35472 KB Output is correct
38 Correct 3 ms 35472 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 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 508 KB Output is correct
5 Correct 2 ms 656 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 2 ms 656 KB Output is correct
12 Correct 2 ms 756 KB Output is correct
13 Correct 2 ms 756 KB Output is correct
14 Correct 2 ms 756 KB Output is correct
15 Correct 2 ms 756 KB Output is correct
16 Correct 2 ms 756 KB Output is correct
17 Correct 2 ms 756 KB Output is correct
18 Correct 2 ms 756 KB Output is correct
19 Correct 2 ms 756 KB Output is correct
20 Correct 2 ms 756 KB Output is correct
21 Correct 2 ms 756 KB Output is correct
22 Correct 70 ms 23040 KB Output is correct
23 Correct 67 ms 24992 KB Output is correct
24 Correct 70 ms 27028 KB Output is correct
25 Correct 68 ms 28984 KB Output is correct
26 Correct 66 ms 30988 KB Output is correct
27 Correct 65 ms 32908 KB Output is correct
28 Correct 68 ms 34828 KB Output is correct
29 Correct 63 ms 35472 KB Output is correct
30 Correct 2 ms 35472 KB Output is correct
31 Correct 2 ms 35472 KB Output is correct
32 Correct 2 ms 35472 KB Output is correct
33 Correct 2 ms 35472 KB Output is correct
34 Correct 3 ms 35472 KB Output is correct
35 Correct 2 ms 35472 KB Output is correct
36 Correct 2 ms 35472 KB Output is correct
37 Correct 2 ms 35472 KB Output is correct
38 Correct 2 ms 35472 KB Output is correct
39 Correct 2 ms 35472 KB Output is correct
40 Correct 2 ms 35472 KB Output is correct
41 Correct 3 ms 35472 KB Output is correct
42 Correct 3 ms 35472 KB Output is correct
43 Correct 3 ms 35472 KB Output is correct
44 Correct 2 ms 35472 KB Output is correct
45 Correct 3 ms 35472 KB Output is correct
46 Correct 3 ms 35472 KB Output is correct
47 Correct 68 ms 35472 KB Output is correct
48 Correct 68 ms 35472 KB Output is correct
49 Correct 67 ms 35472 KB Output is correct
50 Correct 68 ms 35472 KB Output is correct
51 Correct 105 ms 35472 KB Output is correct
52 Correct 118 ms 35472 KB Output is correct
53 Correct 84 ms 35472 KB Output is correct
54 Correct 79 ms 35472 KB Output is correct
55 Correct 80 ms 35472 KB Output is correct
56 Correct 75 ms 35472 KB Output is correct
57 Correct 45 ms 35472 KB Output is correct