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Submission #262724

# Submission time Handle Problem Language Result Execution time Memory
262724 2020-08-13T07:45:12 Z srvlt Fireworks (APIO16_fireworks) C++14
100 / 100
 364 ms 78192 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 swap(Fn & x, Fn & y) {
	swap(x.k, y.k), swap(x.b, y.b), x.slp.swap(y.slp);
}

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 16 ms 21504 KB Output is correct
3 Correct 15 ms 21504 KB Output is correct
4 Correct 17 ms 21504 KB Output is correct
5 Correct 14 ms 21504 KB Output is correct
6 Correct 15 ms 21504 KB Output is correct
7 Correct 16 ms 21632 KB Output is correct
8 Correct 16 ms 21504 KB Output is correct
9 Correct 15 ms 21504 KB Output is correct
10 Correct 15 ms 21504 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 21504 KB Output is correct
2 Correct 20 ms 21504 KB Output is correct
3 Correct 14 ms 21504 KB Output is correct
4 Correct 15 ms 21504 KB Output is correct
5 Correct 15 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 14 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 15 ms 21504 KB Output is correct
14 Correct 14 ms 21504 KB Output is correct
15 Correct 15 ms 21504 KB Output is correct
16 Correct 15 ms 21504 KB Output is correct
17 Correct 15 ms 21504 KB Output is correct
18 Correct 15 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 16 ms 21504 KB Output is correct
3 Correct 15 ms 21504 KB Output is correct
4 Correct 17 ms 21504 KB Output is correct
5 Correct 14 ms 21504 KB Output is correct
6 Correct 15 ms 21504 KB Output is correct
7 Correct 16 ms 21632 KB Output is correct
8 Correct 16 ms 21504 KB Output is correct
9 Correct 15 ms 21504 KB Output is correct
10 Correct 15 ms 21504 KB Output is correct
11 Correct 14 ms 21504 KB Output is correct
12 Correct 20 ms 21504 KB Output is correct
13 Correct 14 ms 21504 KB Output is correct
14 Correct 15 ms 21504 KB Output is correct
15 Correct 15 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 14 ms 21504 KB Output is correct
20 Correct 14 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 15 ms 21504 KB Output is correct
24 Correct 14 ms 21504 KB Output is correct
25 Correct 15 ms 21504 KB Output is correct
26 Correct 15 ms 21504 KB Output is correct
27 Correct 15 ms 21504 KB Output is correct
28 Correct 15 ms 21504 KB Output is correct
29 Correct 15 ms 21504 KB Output is correct
30 Correct 15 ms 21504 KB Output is correct
31 Correct 16 ms 21504 KB Output is correct
32 Correct 16 ms 21632 KB Output is correct
33 Correct 16 ms 21632 KB Output is correct
34 Correct 20 ms 21632 KB Output is correct
35 Correct 18 ms 21632 KB Output is correct
36 Correct 17 ms 21760 KB Output is correct
37 Correct 21 ms 21760 KB Output is correct
38 Correct 21 ms 21760 KB Output is correct
39 Correct 22 ms 21760 KB Output is correct
40 Correct 20 ms 22400 KB Output is correct
41 Correct 18 ms 22400 KB Output is correct
42 Correct 16 ms 21760 KB Output is correct
43 Correct 17 ms 22016 KB Output is correct
44 Correct 17 ms 21888 KB Output is correct
45 Correct 17 ms 21888 KB Output is correct
46 Correct 17 ms 21760 KB Output is correct
47 Correct 17 ms 21760 KB Output is correct
48 Correct 16 ms 21760 KB Output is correct
49 Correct 17 ms 21760 KB Output is correct
50 Correct 16 ms 21632 KB Output is correct
51 Correct 16 ms 21632 KB Output is correct
52 Correct 16 ms 21760 KB Output is correct
53 Correct 16 ms 21760 KB Output is correct
54 Correct 16 ms 21760 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 16 ms 21504 KB Output is correct
3 Correct 15 ms 21504 KB Output is correct
4 Correct 17 ms 21504 KB Output is correct
5 Correct 14 ms 21504 KB Output is correct
6 Correct 15 ms 21504 KB Output is correct
7 Correct 16 ms 21632 KB Output is correct
8 Correct 16 ms 21504 KB Output is correct
9 Correct 15 ms 21504 KB Output is correct
10 Correct 15 ms 21504 KB Output is correct
11 Correct 14 ms 21504 KB Output is correct
12 Correct 20 ms 21504 KB Output is correct
13 Correct 14 ms 21504 KB Output is correct
14 Correct 15 ms 21504 KB Output is correct
15 Correct 15 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 14 ms 21504 KB Output is correct
20 Correct 14 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 15 ms 21504 KB Output is correct
24 Correct 14 ms 21504 KB Output is correct
25 Correct 15 ms 21504 KB Output is correct
26 Correct 15 ms 21504 KB Output is correct
27 Correct 15 ms 21504 KB Output is correct
28 Correct 15 ms 21504 KB Output is correct
29 Correct 15 ms 21504 KB Output is correct
30 Correct 15 ms 21504 KB Output is correct
31 Correct 16 ms 21504 KB Output is correct
32 Correct 16 ms 21632 KB Output is correct
33 Correct 16 ms 21632 KB Output is correct
34 Correct 20 ms 21632 KB Output is correct
35 Correct 18 ms 21632 KB Output is correct
36 Correct 17 ms 21760 KB Output is correct
37 Correct 21 ms 21760 KB Output is correct
38 Correct 21 ms 21760 KB Output is correct
39 Correct 22 ms 21760 KB Output is correct
40 Correct 20 ms 22400 KB Output is correct
41 Correct 18 ms 22400 KB Output is correct
42 Correct 16 ms 21760 KB Output is correct
43 Correct 17 ms 22016 KB Output is correct
44 Correct 17 ms 21888 KB Output is correct
45 Correct 17 ms 21888 KB Output is correct
46 Correct 17 ms 21760 KB Output is correct
47 Correct 17 ms 21760 KB Output is correct
48 Correct 16 ms 21760 KB Output is correct
49 Correct 17 ms 21760 KB Output is correct
50 Correct 16 ms 21632 KB Output is correct
51 Correct 16 ms 21632 KB Output is correct
52 Correct 16 ms 21760 KB Output is correct
53 Correct 16 ms 21760 KB Output is correct
54 Correct 16 ms 21760 KB Output is correct
55 Correct 22 ms 22264 KB Output is correct
56 Correct 44 ms 24320 KB Output is correct
57 Correct 74 ms 26356 KB Output is correct
58 Correct 119 ms 27704 KB Output is correct
59 Correct 127 ms 29676 KB Output is correct
60 Correct 156 ms 31728 KB Output is correct
61 Correct 233 ms 33652 KB Output is correct
62 Correct 254 ms 34928 KB Output is correct
63 Correct 314 ms 37116 KB Output is correct
64 Correct 364 ms 37740 KB Output is correct
65 Correct 162 ms 78192 KB Output is correct
66 Correct 161 ms 77944 KB Output is correct
67 Correct 147 ms 35832 KB Output is correct
68 Correct 172 ms 54248 KB Output is correct
69 Correct 205 ms 51552 KB Output is correct
70 Correct 248 ms 51560 KB Output is correct
71 Correct 226 ms 41704 KB Output is correct
72 Correct 216 ms 41928 KB Output is correct
73 Correct 201 ms 38244 KB Output is correct
74 Correct 171 ms 38300 KB Output is correct
75 Correct 155 ms 37092 KB Output is correct
76 Correct 168 ms 37092 KB Output is correct
77 Correct 174 ms 37160 KB Output is correct
78 Correct 172 ms 35140 KB Output is correct
79 Correct 145 ms 35684 KB Output is correct