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Submission #386051

# Submission time Handle Problem Language Result Execution time Memory
386051 2021-04-05T14:00:42 Z Jasiekstrz Fireworks (APIO16_fireworks) C++17
26 / 100
 13 ms 14592 KB 
#include<bits/stdc++.h>
#define fi first
#define se second
using namespace std;
const int N=6e5;
int p[N+10];
int c[N+10];
int leaves[N+10];
int mx_son[N+10];
vector<pair<int,int>> e[N+10];
void count_leaves(int x)
{
	if(e[x].empty())
	{
		leaves[x]=1;
		return;
	}
	leaves[x]=0;
	mx_son[x]=0;
	for(auto v:e[x])
	{
		count_leaves(v.fi);
		if(leaves[v.fi]>leaves[mx_son[x]])
			mx_son[x]=v.fi;
		leaves[x]+=leaves[v.fi];
	}
	return;
}
void add_edge(multiset<int> &st,int cc)
{
	if(st.empty())
	{
		st.insert(cc);
		st.insert(cc);
		return;
	}
	int init_val[2];
	for(int i:{0,1})
	{
		init_val[i]=*prev(st.end());
		st.erase(prev(st.end()));
	}
	for(int i:{0,1})
		st.insert(init_val[i]+cc);
	return;
}
void solve(int x,multiset<int> &st)
{
	multiset<int> tmp;
	for(auto v:e[x])
	{
		if(v.fi==mx_son[x])
		{
			solve(v.fi,st);
			add_edge(st,v.se);
			break;
		}
	}
	for(auto v:e[x])
	{
		if(v.fi==mx_son[x])
			continue;
		tmp.clear();
		solve(v.fi,tmp);
		add_edge(tmp,v.se);
		for(auto vt:tmp)
			st.insert(vt);
	}
	while(st.size()>leaves[x]+1)
		st.erase(prev(st.end()));
	return;
}
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	int n,m;
	long long ans=0;
	cin>>n>>m;
	for(int i=2;i<=n+m;i++)
	{
		cin>>p[i]>>c[i];
		e[p[i]].push_back({i,c[i]});
		ans+=c[i];
	}
	count_leaves(1);
	multiset<int> ans_set;
	solve(1,ans_set);
	int w=-m,prv=0;
	for(auto v:ans_set)
	{
		ans+=(long long)w*(v-prv);
		prv=v;
		w++;
	}
	cout<<ans<<"\n";
	return 0;
}

Compilation message

fireworks.cpp: In function 'void solve(int, std::multiset<int>&)':
fireworks.cpp:69:17: warning: comparison of integer expressions of different signedness: 'std::multiset<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   69 |  while(st.size()>leaves[x]+1)
      |        ~~~~~~~~~^~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14444 KB Output is correct
2 Correct 11 ms 14592 KB Output is correct
3 Correct 10 ms 14444 KB Output is correct
4 Correct 12 ms 14444 KB Output is correct
5 Correct 10 ms 14444 KB Output is correct
6 Correct 10 ms 14444 KB Output is correct
7 Correct 11 ms 14444 KB Output is correct
8 Correct 11 ms 14444 KB Output is correct
9 Correct 11 ms 14444 KB Output is correct
10 Correct 11 ms 14444 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 14448 KB Output is correct
2 Correct 11 ms 14444 KB Output is correct
3 Correct 11 ms 14444 KB Output is correct
4 Correct 13 ms 14444 KB Output is correct
5 Correct 12 ms 14444 KB Output is correct
6 Correct 11 ms 14444 KB Output is correct
7 Correct 11 ms 14444 KB Output is correct
8 Correct 12 ms 14444 KB Output is correct
9 Correct 12 ms 14592 KB Output is correct
10 Correct 11 ms 14444 KB Output is correct
11 Correct 12 ms 14572 KB Output is correct
12 Correct 11 ms 14444 KB Output is correct
13 Correct 11 ms 14444 KB Output is correct
14 Correct 12 ms 14572 KB Output is correct
15 Correct 12 ms 14444 KB Output is correct
16 Correct 12 ms 14444 KB Output is correct
17 Correct 12 ms 14444 KB Output is correct
18 Correct 13 ms 14444 KB Output is correct
19 Correct 11 ms 14444 KB Output is correct

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14444 KB Output is correct
2 Correct 11 ms 14592 KB Output is correct
3 Correct 10 ms 14444 KB Output is correct
4 Correct 12 ms 14444 KB Output is correct
5 Correct 10 ms 14444 KB Output is correct
6 Correct 10 ms 14444 KB Output is correct
7 Correct 11 ms 14444 KB Output is correct
8 Correct 11 ms 14444 KB Output is correct
9 Correct 11 ms 14444 KB Output is correct
10 Correct 11 ms 14444 KB Output is correct
11 Correct 12 ms 14448 KB Output is correct
12 Correct 11 ms 14444 KB Output is correct
13 Correct 11 ms 14444 KB Output is correct
14 Correct 13 ms 14444 KB Output is correct
15 Correct 12 ms 14444 KB Output is correct
16 Correct 11 ms 14444 KB Output is correct
17 Correct 11 ms 14444 KB Output is correct
18 Correct 12 ms 14444 KB Output is correct
19 Correct 12 ms 14592 KB Output is correct
20 Correct 11 ms 14444 KB Output is correct
21 Correct 12 ms 14572 KB Output is correct
22 Correct 11 ms 14444 KB Output is correct
23 Correct 11 ms 14444 KB Output is correct
24 Correct 12 ms 14572 KB Output is correct
25 Correct 12 ms 14444 KB Output is correct
26 Correct 12 ms 14444 KB Output is correct
27 Correct 12 ms 14444 KB Output is correct
28 Correct 13 ms 14444 KB Output is correct
29 Correct 11 ms 14444 KB Output is correct
30 Incorrect 11 ms 14444 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 14444 KB Output is correct
2 Correct 11 ms 14592 KB Output is correct
3 Correct 10 ms 14444 KB Output is correct
4 Correct 12 ms 14444 KB Output is correct
5 Correct 10 ms 14444 KB Output is correct
6 Correct 10 ms 14444 KB Output is correct
7 Correct 11 ms 14444 KB Output is correct
8 Correct 11 ms 14444 KB Output is correct
9 Correct 11 ms 14444 KB Output is correct
10 Correct 11 ms 14444 KB Output is correct
11 Correct 12 ms 14448 KB Output is correct
12 Correct 11 ms 14444 KB Output is correct
13 Correct 11 ms 14444 KB Output is correct
14 Correct 13 ms 14444 KB Output is correct
15 Correct 12 ms 14444 KB Output is correct
16 Correct 11 ms 14444 KB Output is correct
17 Correct 11 ms 14444 KB Output is correct
18 Correct 12 ms 14444 KB Output is correct
19 Correct 12 ms 14592 KB Output is correct
20 Correct 11 ms 14444 KB Output is correct
21 Correct 12 ms 14572 KB Output is correct
22 Correct 11 ms 14444 KB Output is correct
23 Correct 11 ms 14444 KB Output is correct
24 Correct 12 ms 14572 KB Output is correct
25 Correct 12 ms 14444 KB Output is correct
26 Correct 12 ms 14444 KB Output is correct
27 Correct 12 ms 14444 KB Output is correct
28 Correct 13 ms 14444 KB Output is correct
29 Correct 11 ms 14444 KB Output is correct
30 Incorrect 11 ms 14444 KB Output isn't correct
31 Halted 0 ms 0 KB -