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Submission #262727

# Submission time Handle Problem Language Result Execution time Memory
262727 2020-08-13T07:45:51 Z srvlt Fireworks (APIO16_fireworks) C++14
100 / 100
 260 ms 73084 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define pb push_back
#define all(x) begin(x), end(x)
#define SZ(x) (int)(x).size()
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int n0 = 300003;
int n, m;
vector <array <int, 2>> g[n0];

struct Fn {
	int k = 0;
	ll b = 0;
	priority_queue <ll> slp;
	void merge(Fn & f) {
		while (!f.slp.empty()) {
			slp.push(f.slp.top());
			f.slp.pop();
		}
		k += f.k;
		b += f.b;
	}
	void minimize() {
		while (k > 0) {
			k--;
			b += slp.top();
			slp.pop();
		}
	}
	void add(int w) {
		while (k > 1) {
			k--;
			b += slp.top();
			slp.pop();
		}
		if (k < 0) return;
		ll x0 = slp.top() + w;
		slp.pop();
		if (k == 1) {
			ll x1 = slp.top() + w;
			slp.pop();
			slp.push(x1);
		}
		slp.push(x0);
		b -= w;
	}
};
Fn f[n0];

void merge(int x, int y) {
	if (SZ(f[x].slp) < SZ(f[y].slp)) swap(f[x], f[y]);
	f[x].merge(f[y]);
}

Fn cur;

void dfs(int v, int p) {
	for (auto i : g[v]) {
		int to = i[0], w = i[1];
		if (to == p) continue;
		dfs(to, v);
		if (SZ(g[to]) == 0) {
			while (!cur.slp.empty()) cur.slp.pop();
			cur.slp.push(w), cur.slp.push(w);
			cur.k = 1, cur.b = -w;
			f[v].merge(cur);
		}	else {
			f[to].add(w);
			merge(v, to);
		}
	}
}

int main() {
	ios_base::sync_with_stdio(false), cin.tie(NULL);
	cin >> n >> m;
	for (int i = 2; i <= n + m; i++) {
		int x, w;
		cin >> x >> w;
		g[x].pb({i, w});
	}
	dfs(1, 1);
	f[1].minimize();
	cout << f[1].b;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 21504 KB Output is correct
2 Correct 14 ms 21504 KB Output is correct
3 Correct 14 ms 21504 KB Output is correct
4 Correct 14 ms 21504 KB Output is correct
5 Correct 14 ms 21504 KB Output is correct
6 Correct 14 ms 21504 KB Output is correct
7 Correct 14 ms 21504 KB Output is correct
8 Correct 14 ms 21504 KB Output is correct
9 Correct 14 ms 21504 KB Output is correct
10 Correct 15 ms 21632 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 21504 KB Output is correct
2 Correct 18 ms 21504 KB Output is correct
3 Correct 18 ms 21504 KB Output is correct
4 Correct 14 ms 21436 KB Output is correct
5 Correct 17 ms 21504 KB Output is correct
6 Correct 14 ms 21504 KB Output is correct
7 Correct 14 ms 21504 KB Output is correct
8 Correct 17 ms 21504 KB Output is correct
9 Correct 18 ms 21504 KB Output is correct
10 Correct 17 ms 21504 KB Output is correct
11 Correct 14 ms 21504 KB Output is correct
12 Correct 15 ms 21504 KB Output is correct
13 Correct 19 ms 21504 KB Output is correct
14 Correct 18 ms 21504 KB Output is correct
15 Correct 14 ms 21504 KB Output is correct
16 Correct 14 ms 21504 KB Output is correct
17 Correct 14 ms 21504 KB Output is correct
18 Correct 14 ms 21504 KB Output is correct
19 Correct 15 ms 21504 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 21504 KB Output is correct
2 Correct 14 ms 21504 KB Output is correct
3 Correct 14 ms 21504 KB Output is correct
4 Correct 14 ms 21504 KB Output is correct
5 Correct 14 ms 21504 KB Output is correct
6 Correct 14 ms 21504 KB Output is correct
7 Correct 14 ms 21504 KB Output is correct
8 Correct 14 ms 21504 KB Output is correct
9 Correct 14 ms 21504 KB Output is correct
10 Correct 15 ms 21632 KB Output is correct
11 Correct 18 ms 21504 KB Output is correct
12 Correct 18 ms 21504 KB Output is correct
13 Correct 18 ms 21504 KB Output is correct
14 Correct 14 ms 21436 KB Output is correct
15 Correct 17 ms 21504 KB Output is correct
16 Correct 14 ms 21504 KB Output is correct
17 Correct 14 ms 21504 KB Output is correct
18 Correct 17 ms 21504 KB Output is correct
19 Correct 18 ms 21504 KB Output is correct
20 Correct 17 ms 21504 KB Output is correct
21 Correct 14 ms 21504 KB Output is correct
22 Correct 15 ms 21504 KB Output is correct
23 Correct 19 ms 21504 KB Output is correct
24 Correct 18 ms 21504 KB Output is correct
25 Correct 14 ms 21504 KB Output is correct
26 Correct 14 ms 21504 KB Output is correct
27 Correct 14 ms 21504 KB Output is correct
28 Correct 14 ms 21504 KB Output is correct
29 Correct 15 ms 21504 KB Output is correct
30 Correct 14 ms 21504 KB Output is correct
31 Correct 20 ms 21504 KB Output is correct
32 Correct 15 ms 21504 KB Output is correct
33 Correct 16 ms 21632 KB Output is correct
34 Correct 16 ms 21632 KB Output is correct
35 Correct 16 ms 21632 KB Output is correct
36 Correct 17 ms 21632 KB Output is correct
37 Correct 17 ms 21632 KB Output is correct
38 Correct 17 ms 21632 KB Output is correct
39 Correct 21 ms 21632 KB Output is correct
40 Correct 16 ms 22304 KB Output is correct
41 Correct 16 ms 22272 KB Output is correct
42 Correct 16 ms 21632 KB Output is correct
43 Correct 17 ms 22016 KB Output is correct
44 Correct 17 ms 21888 KB Output is correct
45 Correct 20 ms 21888 KB Output is correct
46 Correct 16 ms 21760 KB Output is correct
47 Correct 17 ms 21760 KB Output is correct
48 Correct 19 ms 21632 KB Output is correct
49 Correct 16 ms 21632 KB Output is correct
50 Correct 16 ms 21664 KB Output is correct
51 Correct 16 ms 21632 KB Output is correct
52 Correct 17 ms 21632 KB Output is correct
53 Correct 16 ms 21632 KB Output is correct
54 Correct 16 ms 21664 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 21504 KB Output is correct
2 Correct 14 ms 21504 KB Output is correct
3 Correct 14 ms 21504 KB Output is correct
4 Correct 14 ms 21504 KB Output is correct
5 Correct 14 ms 21504 KB Output is correct
6 Correct 14 ms 21504 KB Output is correct
7 Correct 14 ms 21504 KB Output is correct
8 Correct 14 ms 21504 KB Output is correct
9 Correct 14 ms 21504 KB Output is correct
10 Correct 15 ms 21632 KB Output is correct
11 Correct 18 ms 21504 KB Output is correct
12 Correct 18 ms 21504 KB Output is correct
13 Correct 18 ms 21504 KB Output is correct
14 Correct 14 ms 21436 KB Output is correct
15 Correct 17 ms 21504 KB Output is correct
16 Correct 14 ms 21504 KB Output is correct
17 Correct 14 ms 21504 KB Output is correct
18 Correct 17 ms 21504 KB Output is correct
19 Correct 18 ms 21504 KB Output is correct
20 Correct 17 ms 21504 KB Output is correct
21 Correct 14 ms 21504 KB Output is correct
22 Correct 15 ms 21504 KB Output is correct
23 Correct 19 ms 21504 KB Output is correct
24 Correct 18 ms 21504 KB Output is correct
25 Correct 14 ms 21504 KB Output is correct
26 Correct 14 ms 21504 KB Output is correct
27 Correct 14 ms 21504 KB Output is correct
28 Correct 14 ms 21504 KB Output is correct
29 Correct 15 ms 21504 KB Output is correct
30 Correct 14 ms 21504 KB Output is correct
31 Correct 20 ms 21504 KB Output is correct
32 Correct 15 ms 21504 KB Output is correct
33 Correct 16 ms 21632 KB Output is correct
34 Correct 16 ms 21632 KB Output is correct
35 Correct 16 ms 21632 KB Output is correct
36 Correct 17 ms 21632 KB Output is correct
37 Correct 17 ms 21632 KB Output is correct
38 Correct 17 ms 21632 KB Output is correct
39 Correct 21 ms 21632 KB Output is correct
40 Correct 16 ms 22304 KB Output is correct
41 Correct 16 ms 22272 KB Output is correct
42 Correct 16 ms 21632 KB Output is correct
43 Correct 17 ms 22016 KB Output is correct
44 Correct 17 ms 21888 KB Output is correct
45 Correct 20 ms 21888 KB Output is correct
46 Correct 16 ms 21760 KB Output is correct
47 Correct 17 ms 21760 KB Output is correct
48 Correct 19 ms 21632 KB Output is correct
49 Correct 16 ms 21632 KB Output is correct
50 Correct 16 ms 21664 KB Output is correct
51 Correct 16 ms 21632 KB Output is correct
52 Correct 17 ms 21632 KB Output is correct
53 Correct 16 ms 21632 KB Output is correct
54 Correct 16 ms 21664 KB Output is correct
55 Correct 21 ms 22016 KB Output is correct
56 Correct 43 ms 23548 KB Output is correct
57 Correct 69 ms 24948 KB Output is correct
58 Correct 93 ms 26096 KB Output is correct
59 Correct 122 ms 27504 KB Output is correct
60 Correct 154 ms 28912 KB Output is correct
61 Correct 182 ms 30452 KB Output is correct
62 Correct 191 ms 31344 KB Output is correct
63 Correct 242 ms 32876 KB Output is correct
64 Correct 260 ms 33420 KB Output is correct
65 Correct 147 ms 73080 KB Output is correct
66 Correct 158 ms 73084 KB Output is correct
67 Correct 142 ms 31096 KB Output is correct
68 Correct 172 ms 49512 KB Output is correct
69 Correct 204 ms 46824 KB Output is correct
70 Correct 209 ms 46960 KB Output is correct
71 Correct 203 ms 37352 KB Output is correct
72 Correct 178 ms 37608 KB Output is correct
73 Correct 146 ms 34276 KB Output is correct
74 Correct 143 ms 34276 KB Output is correct
75 Correct 150 ms 33236 KB Output is correct
76 Correct 149 ms 33256 KB Output is correct
77 Correct 165 ms 33064 KB Output is correct
78 Correct 172 ms 31072 KB Output is correct
79 Correct 146 ms 32224 KB Output is correct