Submission #377684

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
377684	2021-03-14T18:38:48 Z	LucaDantas	Fireworks (APIO16_fireworks)	C++17	100 / 100	289 ms	68588 KB

fireworks

#include<bits/stdc++.h>
using namespace std;

#define pb push_back

constexpr int maxn = 3e5+10;

vector<int> g[maxn];
priority_queue<long long> changes[maxn];
int c[maxn], start_slope[maxn], n;
long long start_y[maxn];

void combine(int a, int b) {
	auto& q = changes[a];
	start_y[a] += start_y[b];
	start_slope[a] += start_slope[b];
	for(; changes[b].size(); changes[b].pop())
		q.push(changes[b].top());
}

void dfs(int u) {
	if(u >= n) {
		start_slope[u] = -1;
		start_y[u] = c[u];
		changes[u].push((long long)c[u]);
		changes[u].push((long long)c[u]);
	} else {
		int big = g[u][0];
		for(int v : g[u]) {
			dfs(v);
			if(changes[v].size() > changes[big].size())
				big = v;
		}
		swap(changes[u], changes[big]);
		start_slope[u] = start_slope[big];
		start_y[u] = start_y[big];
		for(int v : g[u])
			if(v != big) combine(u, v);
		auto& q = changes[u];
		while((int)q.size() > -start_slope[u] + 1)
			q.pop();
		if(!u) return;
		start_y[u] += (long long)c[u];
		assert(q.size() >= 2);
		long long a = q.top(); q.pop();
		long long b = q.top(); q.pop();
		q.push(a + c[u]);
		q.push(b + c[u]);
	}
}

int main() {
	int m; scanf("%d %d", &n, &m);
	for(int i = 1; i < n+m; i++) {
		int p; scanf("%d %d", &p, &c[i]);
		g[p-1].pb(i);
	}
	dfs(0);
	long long ans = start_y[0], last = 0;
	int slope = start_slope[0];
	auto& q = changes[0];
	vector<long long> opa;
	while(q.size())
		opa.pb(q.top()), q.pop();
	while(opa.size()) {
		ans += 1ll * slope * (opa.back() - last);
		last = opa.back(); opa.pop_back();
		++slope;
	}
	printf("%lld\n", ans);
}

Compilation message

fireworks.cpp: In function 'int main()':
fireworks.cpp:53:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   53 |  int m; scanf("%d %d", &n, &m);
      |         ~~~~~^~~~~~~~~~~~~~~~~
fireworks.cpp:55:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   55 |   int p; scanf("%d %d", &p, &c[i]);
      |          ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	11 ms	16748 KB	Output is correct
2	Correct	12 ms	16768 KB	Output is correct
3	Correct	12 ms	16748 KB	Output is correct
4	Correct	11 ms	16748 KB	Output is correct
5	Correct	11 ms	16748 KB	Output is correct
6	Correct	12 ms	16748 KB	Output is correct
7	Correct	11 ms	16748 KB	Output is correct
8	Correct	12 ms	16748 KB	Output is correct
9	Correct	11 ms	16748 KB	Output is correct
10	Correct	12 ms	16748 KB	Output is correct

Subtask #2
19.0 / 19.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	11 ms	16748 KB	Output is correct
2	Correct	12 ms	16748 KB	Output is correct
3	Correct	11 ms	16748 KB	Output is correct
4	Correct	11 ms	16748 KB	Output is correct
5	Correct	12 ms	16748 KB	Output is correct
6	Correct	13 ms	16748 KB	Output is correct
7	Correct	12 ms	16748 KB	Output is correct
8	Correct	12 ms	16748 KB	Output is correct
9	Correct	11 ms	16748 KB	Output is correct
10	Correct	12 ms	16748 KB	Output is correct
11	Correct	12 ms	16768 KB	Output is correct
12	Correct	12 ms	16748 KB	Output is correct
13	Correct	12 ms	16748 KB	Output is correct
14	Correct	12 ms	16748 KB	Output is correct
15	Correct	12 ms	16748 KB	Output is correct
16	Correct	12 ms	16856 KB	Output is correct
17	Correct	12 ms	16748 KB	Output is correct
18	Correct	12 ms	16748 KB	Output is correct
19	Correct	12 ms	16748 KB	Output is correct

Subtask #3
29.0 / 29.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	11 ms	16748 KB	Output is correct
2	Correct	12 ms	16768 KB	Output is correct
3	Correct	12 ms	16748 KB	Output is correct
4	Correct	11 ms	16748 KB	Output is correct
5	Correct	11 ms	16748 KB	Output is correct
6	Correct	12 ms	16748 KB	Output is correct
7	Correct	11 ms	16748 KB	Output is correct
8	Correct	12 ms	16748 KB	Output is correct
9	Correct	11 ms	16748 KB	Output is correct
10	Correct	12 ms	16748 KB	Output is correct
11	Correct	11 ms	16748 KB	Output is correct
12	Correct	12 ms	16748 KB	Output is correct
13	Correct	11 ms	16748 KB	Output is correct
14	Correct	11 ms	16748 KB	Output is correct
15	Correct	12 ms	16748 KB	Output is correct
16	Correct	13 ms	16748 KB	Output is correct
17	Correct	12 ms	16748 KB	Output is correct
18	Correct	12 ms	16748 KB	Output is correct
19	Correct	11 ms	16748 KB	Output is correct
20	Correct	12 ms	16748 KB	Output is correct
21	Correct	12 ms	16768 KB	Output is correct
22	Correct	12 ms	16748 KB	Output is correct
23	Correct	12 ms	16748 KB	Output is correct
24	Correct	12 ms	16748 KB	Output is correct
25	Correct	12 ms	16748 KB	Output is correct
26	Correct	12 ms	16856 KB	Output is correct
27	Correct	12 ms	16748 KB	Output is correct
28	Correct	12 ms	16748 KB	Output is correct
29	Correct	12 ms	16748 KB	Output is correct
30	Correct	12 ms	16748 KB	Output is correct
31	Correct	12 ms	16876 KB	Output is correct
32	Correct	14 ms	16876 KB	Output is correct
33	Correct	13 ms	17004 KB	Output is correct
34	Correct	14 ms	17004 KB	Output is correct
35	Correct	14 ms	17004 KB	Output is correct
36	Correct	14 ms	17132 KB	Output is correct
37	Correct	14 ms	17132 KB	Output is correct
38	Correct	15 ms	17132 KB	Output is correct
39	Correct	15 ms	17132 KB	Output is correct
40	Correct	15 ms	17792 KB	Output is correct
41	Correct	14 ms	17772 KB	Output is correct
42	Correct	14 ms	17132 KB	Output is correct
43	Correct	14 ms	17388 KB	Output is correct
44	Correct	15 ms	17388 KB	Output is correct
45	Correct	15 ms	17388 KB	Output is correct
46	Correct	15 ms	17388 KB	Output is correct
47	Correct	15 ms	17388 KB	Output is correct
48	Correct	15 ms	17260 KB	Output is correct
49	Correct	15 ms	17260 KB	Output is correct
50	Correct	15 ms	17132 KB	Output is correct
51	Correct	14 ms	17132 KB	Output is correct
52	Correct	14 ms	17260 KB	Output is correct
53	Correct	14 ms	17260 KB	Output is correct
54	Correct	15 ms	17260 KB	Output is correct

Subtask #4
45.0 / 45.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	11 ms	16748 KB	Output is correct
2	Correct	12 ms	16768 KB	Output is correct
3	Correct	12 ms	16748 KB	Output is correct
4	Correct	11 ms	16748 KB	Output is correct
5	Correct	11 ms	16748 KB	Output is correct
6	Correct	12 ms	16748 KB	Output is correct
7	Correct	11 ms	16748 KB	Output is correct
8	Correct	12 ms	16748 KB	Output is correct
9	Correct	11 ms	16748 KB	Output is correct
10	Correct	12 ms	16748 KB	Output is correct
11	Correct	11 ms	16748 KB	Output is correct
12	Correct	12 ms	16748 KB	Output is correct
13	Correct	11 ms	16748 KB	Output is correct
14	Correct	11 ms	16748 KB	Output is correct
15	Correct	12 ms	16748 KB	Output is correct
16	Correct	13 ms	16748 KB	Output is correct
17	Correct	12 ms	16748 KB	Output is correct
18	Correct	12 ms	16748 KB	Output is correct
19	Correct	11 ms	16748 KB	Output is correct
20	Correct	12 ms	16748 KB	Output is correct
21	Correct	12 ms	16768 KB	Output is correct
22	Correct	12 ms	16748 KB	Output is correct
23	Correct	12 ms	16748 KB	Output is correct
24	Correct	12 ms	16748 KB	Output is correct
25	Correct	12 ms	16748 KB	Output is correct
26	Correct	12 ms	16856 KB	Output is correct
27	Correct	12 ms	16748 KB	Output is correct
28	Correct	12 ms	16748 KB	Output is correct
29	Correct	12 ms	16748 KB	Output is correct
30	Correct	12 ms	16748 KB	Output is correct
31	Correct	12 ms	16876 KB	Output is correct
32	Correct	14 ms	16876 KB	Output is correct
33	Correct	13 ms	17004 KB	Output is correct
34	Correct	14 ms	17004 KB	Output is correct
35	Correct	14 ms	17004 KB	Output is correct
36	Correct	14 ms	17132 KB	Output is correct
37	Correct	14 ms	17132 KB	Output is correct
38	Correct	15 ms	17132 KB	Output is correct
39	Correct	15 ms	17132 KB	Output is correct
40	Correct	15 ms	17792 KB	Output is correct
41	Correct	14 ms	17772 KB	Output is correct
42	Correct	14 ms	17132 KB	Output is correct
43	Correct	14 ms	17388 KB	Output is correct
44	Correct	15 ms	17388 KB	Output is correct
45	Correct	15 ms	17388 KB	Output is correct
46	Correct	15 ms	17388 KB	Output is correct
47	Correct	15 ms	17388 KB	Output is correct
48	Correct	15 ms	17260 KB	Output is correct
49	Correct	15 ms	17260 KB	Output is correct
50	Correct	15 ms	17132 KB	Output is correct
51	Correct	14 ms	17132 KB	Output is correct
52	Correct	14 ms	17260 KB	Output is correct
53	Correct	14 ms	17260 KB	Output is correct
54	Correct	15 ms	17260 KB	Output is correct
55	Correct	20 ms	17900 KB	Output is correct
56	Correct	48 ms	20968 KB	Output is correct
57	Correct	82 ms	23784 KB	Output is correct
58	Correct	105 ms	25828 KB	Output is correct
59	Correct	135 ms	28664 KB	Output is correct
60	Correct	179 ms	31588 KB	Output is correct
61	Correct	199 ms	34092 KB	Output is correct
62	Correct	220 ms	35808 KB	Output is correct
63	Correct	274 ms	39392 KB	Output is correct
64	Correct	289 ms	40336 KB	Output is correct
65	Correct	145 ms	68588 KB	Output is correct
66	Correct	146 ms	68588 KB	Output is correct
67	Correct	159 ms	35820 KB	Output is correct
68	Correct	214 ms	56284 KB	Output is correct
69	Correct	243 ms	53596 KB	Output is correct
70	Correct	244 ms	53724 KB	Output is correct
71	Correct	257 ms	54140 KB	Output is correct
72	Correct	266 ms	54228 KB	Output is correct
73	Correct	238 ms	50936 KB	Output is correct
74	Correct	240 ms	51028 KB	Output is correct
75	Correct	234 ms	49880 KB	Output is correct
76	Correct	238 ms	49864 KB	Output is correct
77	Correct	241 ms	48608 KB	Output is correct
78	Correct	243 ms	47960 KB	Output is correct
79	Correct	230 ms	46664 KB	Output is correct

Submission #377684

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 19.0 / 19.0

Subtask #3 29.0 / 29.0

Subtask #4 45.0 / 45.0

Subtask #1
7.0 / 7.0

Subtask #2
19.0 / 19.0

Subtask #3
29.0 / 29.0

Subtask #4
45.0 / 45.0