oj.uz

Submission #593984

# Submission time Handle Problem Language Result Execution time Memory
593984 2022-07-11T19:51:43 Z penguinhacker Fireworks (APIO16_fireworks) C++17
26 / 100
 13 ms 16792 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ar array

const int mxN=3e5;
int n, m;
vector<ar<int, 2>> adj[mxN];
ll yi[mxN], ys[mxN]; // y intercept and y intercept slope
priority_queue<ll> pq[mxN];

void dfs(int u=0) {
	for (auto [v, w] : adj[u]) {
		if (adj[v].empty()) {
			yi[v]=w, ys[v]=-1;
			pq[v].push(w);
			pq[v].push(w);
		} else {
			dfs(v);
			// shift container by w
			int last=-1;
			while(ys[v]+(int)pq[v].size()>0) {
				last=pq[v].top();
				pq[v].pop();
			}
			assert(last!=-1&&pq[v].size());
			int first=pq[v].top();
			pq[v].pop();
			yi[v]+=w;
			pq[v].push(first+w);
			pq[v].push(last+w);
		}
		yi[u]+=yi[v];
		ys[u]+=ys[v];
		if (pq[v].size()>pq[u].size())
			swap(pq[u], pq[v]);
		while(pq[v].size()) {
			pq[u].push(pq[v].top());
			pq[v].pop();
		}
	}
}

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> n >> m;
	for (int i=1; i<n+m; ++i) {
		int p, c;
		cin >> p >> c, --p;
		adj[p].push_back({i, c});
	}
	dfs();
	ll ans=yi[0], slope=ys[0];
	vector<int> changes;
	while(pq[0].size()) {
		changes.push_back(pq[0].top());
		pq[0].pop();
	}
	reverse(changes.begin(), changes.end());
	ll last=0;
	for (int i=0; slope<0; ++i, ++slope) {
		assert(i<changes.size());
		ans+=(changes[i]-last)*slope;
		last=changes[i];
	}
	cout << ans;
	return 0;
}

Compilation message

In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from fireworks.cpp:1:
fireworks.cpp: In function 'int main()':
fireworks.cpp:64:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |   assert(i<changes.size());
      |          ~^~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16724 KB Output is correct
2 Correct 9 ms 16724 KB Output is correct
3 Correct 13 ms 16712 KB Output is correct
4 Correct 9 ms 16780 KB Output is correct
5 Correct 9 ms 16776 KB Output is correct
6 Correct 10 ms 16692 KB Output is correct
7 Correct 9 ms 16724 KB Output is correct
8 Correct 9 ms 16724 KB Output is correct
9 Correct 10 ms 16772 KB Output is correct
10 Correct 9 ms 16772 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 16656 KB Output is correct
2 Correct 9 ms 16780 KB Output is correct
3 Correct 9 ms 16776 KB Output is correct
4 Correct 12 ms 16708 KB Output is correct
5 Correct 11 ms 16712 KB Output is correct
6 Correct 11 ms 16776 KB Output is correct
7 Correct 10 ms 16724 KB Output is correct
8 Correct 11 ms 16724 KB Output is correct
9 Correct 10 ms 16776 KB Output is correct
10 Correct 9 ms 16676 KB Output is correct
11 Correct 9 ms 16772 KB Output is correct
12 Correct 9 ms 16724 KB Output is correct
13 Correct 9 ms 16696 KB Output is correct
14 Correct 9 ms 16792 KB Output is correct
15 Correct 9 ms 16724 KB Output is correct
16 Correct 10 ms 16772 KB Output is correct
17 Correct 9 ms 16724 KB Output is correct
18 Correct 10 ms 16780 KB Output is correct
19 Correct 12 ms 16724 KB Output is correct

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16724 KB Output is correct
2 Correct 9 ms 16724 KB Output is correct
3 Correct 13 ms 16712 KB Output is correct
4 Correct 9 ms 16780 KB Output is correct
5 Correct 9 ms 16776 KB Output is correct
6 Correct 10 ms 16692 KB Output is correct
7 Correct 9 ms 16724 KB Output is correct
8 Correct 9 ms 16724 KB Output is correct
9 Correct 10 ms 16772 KB Output is correct
10 Correct 9 ms 16772 KB Output is correct
11 Correct 8 ms 16656 KB Output is correct
12 Correct 9 ms 16780 KB Output is correct
13 Correct 9 ms 16776 KB Output is correct
14 Correct 12 ms 16708 KB Output is correct
15 Correct 11 ms 16712 KB Output is correct
16 Correct 11 ms 16776 KB Output is correct
17 Correct 10 ms 16724 KB Output is correct
18 Correct 11 ms 16724 KB Output is correct
19 Correct 10 ms 16776 KB Output is correct
20 Correct 9 ms 16676 KB Output is correct
21 Correct 9 ms 16772 KB Output is correct
22 Correct 9 ms 16724 KB Output is correct
23 Correct 9 ms 16696 KB Output is correct
24 Correct 9 ms 16792 KB Output is correct
25 Correct 9 ms 16724 KB Output is correct
26 Correct 10 ms 16772 KB Output is correct
27 Correct 9 ms 16724 KB Output is correct
28 Correct 10 ms 16780 KB Output is correct
29 Correct 12 ms 16724 KB Output is correct
30 Incorrect 11 ms 16776 KB Output isn't correct
31 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16724 KB Output is correct
2 Correct 9 ms 16724 KB Output is correct
3 Correct 13 ms 16712 KB Output is correct
4 Correct 9 ms 16780 KB Output is correct
5 Correct 9 ms 16776 KB Output is correct
6 Correct 10 ms 16692 KB Output is correct
7 Correct 9 ms 16724 KB Output is correct
8 Correct 9 ms 16724 KB Output is correct
9 Correct 10 ms 16772 KB Output is correct
10 Correct 9 ms 16772 KB Output is correct
11 Correct 8 ms 16656 KB Output is correct
12 Correct 9 ms 16780 KB Output is correct
13 Correct 9 ms 16776 KB Output is correct
14 Correct 12 ms 16708 KB Output is correct
15 Correct 11 ms 16712 KB Output is correct
16 Correct 11 ms 16776 KB Output is correct
17 Correct 10 ms 16724 KB Output is correct
18 Correct 11 ms 16724 KB Output is correct
19 Correct 10 ms 16776 KB Output is correct
20 Correct 9 ms 16676 KB Output is correct
21 Correct 9 ms 16772 KB Output is correct
22 Correct 9 ms 16724 KB Output is correct
23 Correct 9 ms 16696 KB Output is correct
24 Correct 9 ms 16792 KB Output is correct
25 Correct 9 ms 16724 KB Output is correct
26 Correct 10 ms 16772 KB Output is correct
27 Correct 9 ms 16724 KB Output is correct
28 Correct 10 ms 16780 KB Output is correct
29 Correct 12 ms 16724 KB Output is correct
30 Incorrect 11 ms 16776 KB Output isn't correct
31 Halted 0 ms 0 KB -