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Submission #232877

# Submission time Handle Problem Language Result Execution time Memory
232877 2020-05-18T13:48:08 Z shayan_p Paprike (COI18_paprike) C++14
100 / 100
 77 ms 22136 KB 
// Never let them see you bleed...

#include<bits/stdc++.h>

#define F first
#define S second
#define PB push_back
#define sz(s) int((s).size())
#define bit(n,k) (((n)>>(k))&1)

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;

const int maxn = 3e5 + 10, mod = 1e9 + 7, inf = 1e9 + 10;

int a[maxn], n, k, ans;
vector<int> v[maxn];

int dfs(int u, int par = -1){
    ll sum = a[u];
    vector<int> vec;
    for(int y : v[u]){
	if(y != par){
	    vec.PB(dfs(y, u));
	    sum+= vec.back();
	}
    }
    if(sum <= k)
	return sum;
    sort(vec.begin(), vec.end());
    while(sum > k){
	ans++;
	sum-= vec.back();
	vec.pop_back();
    }
    return sum;
}

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

    cin >> n >> k;
    for(int i = 1; i <= n; i++){
	cin >> a[i];
    }
    for(int i = 1; i <= n-1; i++){
	int a, b;
	cin >> a >> b;
	v[a].PB(b);
	v[b].PB(a);
    }
    dfs(1);
    return cout << ans << endl, 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7424 KB Output is correct
2 Correct 8 ms 7424 KB Output is correct
3 Correct 8 ms 7424 KB Output is correct
4 Correct 8 ms 7424 KB Output is correct
5 Correct 8 ms 7424 KB Output is correct
6 Correct 10 ms 7424 KB Output is correct
7 Correct 9 ms 7424 KB Output is correct
8 Correct 9 ms 7424 KB Output is correct
9 Correct 9 ms 7424 KB Output is correct
10 Correct 9 ms 7296 KB Output is correct
11 Correct 11 ms 7424 KB Output is correct
12 Correct 9 ms 7424 KB Output is correct
13 Correct 9 ms 7424 KB Output is correct
14 Correct 9 ms 7424 KB Output is correct
15 Correct 8 ms 7424 KB Output is correct
16 Correct 9 ms 7424 KB Output is correct
17 Correct 8 ms 7424 KB Output is correct
18 Correct 9 ms 7424 KB Output is correct
19 Correct 8 ms 7424 KB Output is correct
20 Correct 8 ms 7424 KB Output is correct
21 Correct 9 ms 7424 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 66 ms 22008 KB Output is correct
2 Correct 65 ms 22136 KB Output is correct
3 Correct 67 ms 22008 KB Output is correct
4 Correct 70 ms 22008 KB Output is correct
5 Correct 67 ms 22008 KB Output is correct
6 Correct 63 ms 22008 KB Output is correct
7 Correct 62 ms 21916 KB Output is correct
8 Correct 58 ms 22008 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7424 KB Output is correct
2 Correct 8 ms 7424 KB Output is correct
3 Correct 8 ms 7424 KB Output is correct
4 Correct 8 ms 7424 KB Output is correct
5 Correct 8 ms 7424 KB Output is correct
6 Correct 10 ms 7424 KB Output is correct
7 Correct 9 ms 7424 KB Output is correct
8 Correct 9 ms 7424 KB Output is correct
9 Correct 9 ms 7424 KB Output is correct
10 Correct 9 ms 7296 KB Output is correct
11 Correct 11 ms 7424 KB Output is correct
12 Correct 9 ms 7424 KB Output is correct
13 Correct 9 ms 7424 KB Output is correct
14 Correct 9 ms 7424 KB Output is correct
15 Correct 8 ms 7424 KB Output is correct
16 Correct 9 ms 7424 KB Output is correct
17 Correct 8 ms 7424 KB Output is correct
18 Correct 9 ms 7424 KB Output is correct
19 Correct 8 ms 7424 KB Output is correct
20 Correct 8 ms 7424 KB Output is correct
21 Correct 9 ms 7424 KB Output is correct
22 Correct 9 ms 7424 KB Output is correct
23 Correct 9 ms 7424 KB Output is correct
24 Correct 12 ms 7424 KB Output is correct
25 Correct 10 ms 7424 KB Output is correct
26 Correct 9 ms 7424 KB Output is correct
27 Correct 9 ms 7424 KB Output is correct
28 Correct 11 ms 7456 KB Output is correct
29 Correct 9 ms 7424 KB Output is correct
30 Correct 9 ms 7424 KB Output is correct
31 Correct 9 ms 7424 KB Output is correct
32 Correct 9 ms 7424 KB Output is correct
33 Correct 9 ms 7424 KB Output is correct
34 Correct 10 ms 7424 KB Output is correct
35 Correct 9 ms 7424 KB Output is correct
36 Correct 9 ms 7424 KB Output is correct
37 Correct 9 ms 7424 KB Output is correct
38 Correct 9 ms 7424 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7424 KB Output is correct
2 Correct 8 ms 7424 KB Output is correct
3 Correct 8 ms 7424 KB Output is correct
4 Correct 8 ms 7424 KB Output is correct
5 Correct 8 ms 7424 KB Output is correct
6 Correct 10 ms 7424 KB Output is correct
7 Correct 9 ms 7424 KB Output is correct
8 Correct 9 ms 7424 KB Output is correct
9 Correct 9 ms 7424 KB Output is correct
10 Correct 9 ms 7296 KB Output is correct
11 Correct 11 ms 7424 KB Output is correct
12 Correct 9 ms 7424 KB Output is correct
13 Correct 9 ms 7424 KB Output is correct
14 Correct 9 ms 7424 KB Output is correct
15 Correct 8 ms 7424 KB Output is correct
16 Correct 9 ms 7424 KB Output is correct
17 Correct 8 ms 7424 KB Output is correct
18 Correct 9 ms 7424 KB Output is correct
19 Correct 8 ms 7424 KB Output is correct
20 Correct 8 ms 7424 KB Output is correct
21 Correct 9 ms 7424 KB Output is correct
22 Correct 66 ms 22008 KB Output is correct
23 Correct 65 ms 22136 KB Output is correct
24 Correct 67 ms 22008 KB Output is correct
25 Correct 70 ms 22008 KB Output is correct
26 Correct 67 ms 22008 KB Output is correct
27 Correct 63 ms 22008 KB Output is correct
28 Correct 62 ms 21916 KB Output is correct
29 Correct 58 ms 22008 KB Output is correct
30 Correct 9 ms 7424 KB Output is correct
31 Correct 9 ms 7424 KB Output is correct
32 Correct 12 ms 7424 KB Output is correct
33 Correct 10 ms 7424 KB Output is correct
34 Correct 9 ms 7424 KB Output is correct
35 Correct 9 ms 7424 KB Output is correct
36 Correct 11 ms 7456 KB Output is correct
37 Correct 9 ms 7424 KB Output is correct
38 Correct 9 ms 7424 KB Output is correct
39 Correct 9 ms 7424 KB Output is correct
40 Correct 9 ms 7424 KB Output is correct
41 Correct 9 ms 7424 KB Output is correct
42 Correct 10 ms 7424 KB Output is correct
43 Correct 9 ms 7424 KB Output is correct
44 Correct 9 ms 7424 KB Output is correct
45 Correct 9 ms 7424 KB Output is correct
46 Correct 9 ms 7424 KB Output is correct
47 Correct 64 ms 16944 KB Output is correct
48 Correct 66 ms 15096 KB Output is correct
49 Correct 63 ms 14456 KB Output is correct
50 Correct 65 ms 14072 KB Output is correct
51 Correct 75 ms 13048 KB Output is correct
52 Correct 69 ms 12920 KB Output is correct
53 Correct 71 ms 12960 KB Output is correct
54 Correct 76 ms 12920 KB Output is correct
55 Correct 77 ms 12408 KB Output is correct
56 Correct 75 ms 12408 KB Output is correct
57 Correct 49 ms 13680 KB Output is correct