oj.uz

답안 #387095

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
387095 2021-04-07T22:47:54 Z ogibogi2004 Worst Reporter 4 (JOI21_worst_reporter4) C++14
79 / 100
 662 ms 97704 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int MAXN=2e5+6;
int n;
vector<int>g[MAXN];
vector<int>g1[MAXN];
vector<int>g3[MAXN];
bool avoid[MAXN];
ll c[MAXN];
bool inroots[MAXN];
int a[MAXN],h[MAXN],subtree[MAXN];
void dfs11(int u,int p)
{
	subtree[u]=1;
	for(auto xd:g[u])
	{
		if(xd==p)continue;
		dfs11(xd,u);
		subtree[u]+=subtree[xd];
	}
}
void dfs(int u,int p,map<int,ll> &mp)
{
	int bc=-1,maxst=-1;
	for(auto xd:g[u])
	{
		if(xd==p)continue;
		if(subtree[xd]>maxst)
		{
			maxst=subtree[xd];
			bc=xd;
		}
	}
	if(bc==-1)
	{
		mp[0]=0;
		mp[h[u]+1]=c[u];
		return;
	}
	dfs(bc,u,mp);
	for(auto xd:g[u])
	{
		if(xd==p||xd==bc)continue;
		map<int,ll> tmp;
		dfs(xd,u,tmp);
		for(auto it:tmp)
		{
			if(it.second!=0)mp[it.first]+=it.second;
		}
	}
	mp[h[u]+1]+=c[u];
	mp[0]+=c[u];
	mp[h[u]]-=c[u];
	auto it=mp.lower_bound(h[u]);
	int d=mp[h[u]];
	auto it1=it;
	it--;
	while(d<0)
	{
		int t=(*it).first;
		if((*it).second+d>=0)
		{
			mp[t]+=d;
			d=0;
		}
		else
		{
			d+=(*it).second;
			it1=it;
			it--;mp.erase(it1);
		}
	}
	mp[h[u]]=d;
}
bool used[MAXN];
vector<int>order;
int comp[MAXN];
void dfs1(int u)
{
	used[u]=1;
	for(auto xd:g[u])
	{
		if(used[xd]==0)dfs1(xd);
	}
	order.push_back(u);
}
void dfs2(int u,int c)
{
	comp[u]=c;used[u]=1;
	for(auto xd:g[u])
	{
		if(used[xd]==0)dfs2(xd,c);
	}
}
vector<int>v;
void dfs3(int u)
{
	used[u]=1;
	v.push_back(u);
	for(auto xd:g[u])if(!used[xd])dfs3(xd);
	for(auto xd:g1[u])if(!used[xd])dfs3(xd);
}
int cnt[MAXN];
int main()
{
	//ios_base::sync_with_stdio(false);
	//cin.tie(NULL);
	//cout.tie(NULL);
	cin>>n;
	for(int i=1;i<=n;++i)
	{
		cin>>a[i]>>h[i]>>c[i];
		g[a[i]].push_back(i);
		g1[i].push_back(a[i]);
	}
	for(int i=1;i<=n;i++)
	{
		dfs1(i);
	}
	reverse(order.begin(),order.end());
	memset(used,0,sizeof(used));
	for(int i=0;i<order.size();i++)
	{
		if(used[order[i]]==0)dfs2(order[i],i);
	}
	memset(used,0,sizeof(used));
	ll ans=0;
	for(int i=1;i<=n;i++)
	{
		if(used[i]==0)
		{
			v.clear();
			dfs3(i);
			int y=-1;
			for(int j=0;j<v.size();j++)
			{
				cnt[comp[v[j]]]++;
				if(cnt[comp[v[j]]]>1)y=comp[v[j]];
				if(a[v[j]]==v[j])y=comp[v[j]];
			}
			for(int j=0;j<v.size();j++)
			{
				--cnt[comp[v[j]]];
			}
			vector<pair<int,int> >roots;
			for(int j=0;j<v.size();++j)
			{
				if(comp[v[j]]==y)
				{
					roots.push_back({h[v[j]],v[j]});
					inroots[v[j]]=1;
				}
			}
			sort(roots.rbegin(),roots.rend());
			vector<int>g1;
			for(auto xd:g[roots[roots.size()-1].second])
			{
				if(inroots[xd])continue;
				else g1.push_back(xd);
			}
			g[roots.back().second]=g1;
			for(int j=0;j<roots.size()-1;++j)
			{
				for(auto xd:g[roots[j].second])if(!inroots[xd])g[roots[roots.size()-1].second].push_back(xd);
				g[roots[j].second]={roots[j+1].second};
			}
			dfs11(roots[0].second,0);
			map<int,ll>mp;
			dfs(roots[0].second,0,mp);
			if(mp.count(0))ans+=mp[0];
		}
	}
	cout<<ans<<endl;
return 0;
}
/*
3 
2 3 4
3 2 5
1 3 2
*/
/*
4
2 3 5
3 4 6
1 2 7
2 5 4
*/

Compilation message

worst_reporter2.cpp: In function 'int main()':
worst_reporter2.cpp:123:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  123 |  for(int i=0;i<order.size();i++)
      |              ~^~~~~~~~~~~~~
worst_reporter2.cpp:136:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  136 |    for(int j=0;j<v.size();j++)
      |                ~^~~~~~~~~
worst_reporter2.cpp:142:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  142 |    for(int j=0;j<v.size();j++)
      |                ~^~~~~~~~~
worst_reporter2.cpp:147:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  147 |    for(int j=0;j<v.size();++j)
      |                ~^~~~~~~~~
worst_reporter2.cpp:163:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  163 |    for(int j=0;j<roots.size()-1;++j)
      |                ~^~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 14572 KB Output is correct
2 Correct 11 ms 14572 KB Output is correct
3 Correct 11 ms 14572 KB Output is correct
4 Correct 10 ms 14572 KB Output is correct
5 Correct 21 ms 15340 KB Output is correct
6 Correct 20 ms 15084 KB Output is correct
7 Correct 19 ms 15084 KB Output is correct
8 Correct 21 ms 15340 KB Output is correct
9 Correct 20 ms 15084 KB Output is correct
10 Correct 19 ms 15084 KB Output is correct
11 Correct 18 ms 15212 KB Output is correct
12 Correct 21 ms 16108 KB Output is correct
13 Correct 19 ms 16108 KB Output is correct
14 Correct 20 ms 15724 KB Output is correct
15 Correct 20 ms 15596 KB Output is correct
16 Correct 22 ms 15340 KB Output is correct
17 Correct 26 ms 15084 KB Output is correct
18 Correct 21 ms 15084 KB Output is correct
19 Correct 20 ms 15852 KB Output is correct
20 Correct 18 ms 15596 KB Output is correct
21 Correct 18 ms 15596 KB Output is correct
22 Correct 18 ms 15340 KB Output is correct
23 Correct 17 ms 15212 KB Output is correct
24 Correct 20 ms 15852 KB Output is correct
25 Correct 18 ms 15596 KB Output is correct
26 Correct 22 ms 16748 KB Output is correct
27 Correct 19 ms 15852 KB Output is correct
28 Correct 20 ms 16108 KB Output is correct
29 Correct 20 ms 16364 KB Output is correct
30 Correct 21 ms 16364 KB Output is correct
31 Correct 22 ms 16364 KB Output is correct

Subtask #2
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 15340 KB Output is correct
2 Correct 662 ms 44396 KB Output is correct
3 Correct 567 ms 33120 KB Output is correct
4 Correct 658 ms 42352 KB Output is correct
5 Correct 564 ms 33028 KB Output is correct
6 Correct 481 ms 32996 KB Output is correct
7 Correct 460 ms 32996 KB Output is correct
8 Correct 446 ms 73696 KB Output is correct
9 Correct 442 ms 73568 KB Output is correct
10 Correct 335 ms 73564 KB Output is correct
11 Correct 430 ms 54752 KB Output is correct
12 Correct 417 ms 54752 KB Output is correct
13 Correct 534 ms 44124 KB Output is correct
14 Correct 422 ms 33036 KB Output is correct
15 Correct 301 ms 32860 KB Output is correct
16 Correct 540 ms 61264 KB Output is correct
17 Correct 363 ms 51676 KB Output is correct
18 Correct 316 ms 51676 KB Output is correct
19 Correct 427 ms 43224 KB Output is correct
20 Correct 292 ms 31836 KB Output is correct
21 Correct 556 ms 62684 KB Output is correct
22 Correct 350 ms 52188 KB Output is correct
23 Correct 545 ms 97704 KB Output is correct
24 Correct 485 ms 66296 KB Output is correct
25 Correct 462 ms 80864 KB Output is correct
26 Correct 461 ms 87372 KB Output is correct
27 Correct 495 ms 85088 KB Output is correct
28 Correct 492 ms 84960 KB Output is correct

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 14572 KB Output is correct
2 Correct 11 ms 14572 KB Output is correct
3 Correct 11 ms 14572 KB Output is correct
4 Correct 10 ms 14572 KB Output is correct
5 Correct 21 ms 15340 KB Output is correct
6 Correct 20 ms 15084 KB Output is correct
7 Correct 19 ms 15084 KB Output is correct
8 Correct 21 ms 15340 KB Output is correct
9 Correct 20 ms 15084 KB Output is correct
10 Correct 19 ms 15084 KB Output is correct
11 Correct 18 ms 15212 KB Output is correct
12 Correct 21 ms 16108 KB Output is correct
13 Correct 19 ms 16108 KB Output is correct
14 Correct 20 ms 15724 KB Output is correct
15 Correct 20 ms 15596 KB Output is correct
16 Correct 22 ms 15340 KB Output is correct
17 Correct 26 ms 15084 KB Output is correct
18 Correct 21 ms 15084 KB Output is correct
19 Correct 20 ms 15852 KB Output is correct
20 Correct 18 ms 15596 KB Output is correct
21 Correct 18 ms 15596 KB Output is correct
22 Correct 18 ms 15340 KB Output is correct
23 Correct 17 ms 15212 KB Output is correct
24 Correct 20 ms 15852 KB Output is correct
25 Correct 18 ms 15596 KB Output is correct
26 Correct 22 ms 16748 KB Output is correct
27 Correct 19 ms 15852 KB Output is correct
28 Correct 20 ms 16108 KB Output is correct
29 Correct 20 ms 16364 KB Output is correct
30 Correct 21 ms 16364 KB Output is correct
31 Correct 22 ms 16364 KB Output is correct
32 Correct 21 ms 15340 KB Output is correct
33 Correct 662 ms 44396 KB Output is correct
34 Correct 567 ms 33120 KB Output is correct
35 Correct 658 ms 42352 KB Output is correct
36 Correct 564 ms 33028 KB Output is correct
37 Correct 481 ms 32996 KB Output is correct
38 Correct 460 ms 32996 KB Output is correct
39 Correct 446 ms 73696 KB Output is correct
40 Correct 442 ms 73568 KB Output is correct
41 Correct 335 ms 73564 KB Output is correct
42 Correct 430 ms 54752 KB Output is correct
43 Correct 417 ms 54752 KB Output is correct
44 Correct 534 ms 44124 KB Output is correct
45 Correct 422 ms 33036 KB Output is correct
46 Correct 301 ms 32860 KB Output is correct
47 Correct 540 ms 61264 KB Output is correct
48 Correct 363 ms 51676 KB Output is correct
49 Correct 316 ms 51676 KB Output is correct
50 Correct 427 ms 43224 KB Output is correct
51 Correct 292 ms 31836 KB Output is correct
52 Correct 556 ms 62684 KB Output is correct
53 Correct 350 ms 52188 KB Output is correct
54 Correct 545 ms 97704 KB Output is correct
55 Correct 485 ms 66296 KB Output is correct
56 Correct 462 ms 80864 KB Output is correct
57 Correct 461 ms 87372 KB Output is correct
58 Correct 495 ms 85088 KB Output is correct
59 Correct 492 ms 84960 KB Output is correct
60 Correct 11 ms 14848 KB Output is correct
61 Incorrect 11 ms 14572 KB Output isn't correct
62 Halted 0 ms 0 KB -