답안 #107546

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
107546	2019-04-25T01:57:02 Z	aer0park	트리 (KOI16_tree)	C++14	100 / 100	271 ms	27920 KB

tree

#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
 
ll n,q,cnt=1,qy=1;
ll ind[200004],pw[200004],chd[200004],par[200004];
vector<ll> g[200004];  //원래 번호 
 
ll val(ll a)
{
	ll ret=0;
	while(a)
	{
		ret+=pw[a];
		a-=(a&-a);	
	}	
	return ret;
}
 
void upd(ll a,ll x)
{
	while(a<=n)
	{
		pw[a]+=x;
		a+=(a&-a);
	}	
}
 
void updrange(ll a,ll sz)
{
	upd(a,qy);
	upd(a+sz,-qy);
	qy+=n+1-a;
}
 
ll dfs(ll a,ll p)
{
	ll ret=1;
	ind[a]=cnt++,par[ind[a]]=ind[p];
	for(int i=0;i<g[a].size();i++)
		ret+=dfs(g[a][i],a);
	chd[ind[a]]=ret;
	return ret;
}
 
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(NULL);
	cin>>n>>q;
	for(int i=2;i<=n;i++)
	{
		ll a;cin>>a;
		g[a].push_back(i);
	}    
	dfs(1,0);
	for(int i=0;i<q;i++)
	{
		ll b,c,d;cin>>b>>c>>d;
		if(d==0)
		{
			if(val(ind[b])==val(ind[c]))
				cout<<"YES"<<"\n";
			else
				cout<<"NO"<<"\n";
		}
		else
		{
			if(val(ind[b])==val(ind[c]))
			{
				cout<<"YES"<<"\n";
				ll f=ind[b];
				if(val(f)==val(par[f]))
					updrange(f,chd[f]);
			}
			else
			{
				cout<<"NO"<<"\n";
				ll f=ind[c];
				if(val(f)==val(par[f]))
					updrange(f,chd[f]);	
			}
		}
	}
    return 0;
}

Compilation message

tree.cpp: In function 'll dfs(ll, ll)':
tree.cpp:42:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<g[a].size();i++)
              ~^~~~~~~~~~~~

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	5248 KB	Output is correct
2	Correct	7 ms	5248 KB	Output is correct
3	Correct	6 ms	5120 KB	Output is correct
4	Correct	6 ms	5248 KB	Output is correct
5	Correct	7 ms	5120 KB	Output is correct
6	Correct	7 ms	5120 KB	Output is correct
7	Correct	6 ms	5120 KB	Output is correct
8	Correct	7 ms	5248 KB	Output is correct
9	Correct	8 ms	5248 KB	Output is correct
10	Correct	7 ms	5248 KB	Output is correct

Subtask #2
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	5248 KB	Output is correct
2	Correct	7 ms	5248 KB	Output is correct
3	Correct	6 ms	5120 KB	Output is correct
4	Correct	6 ms	5248 KB	Output is correct
5	Correct	7 ms	5120 KB	Output is correct
6	Correct	7 ms	5120 KB	Output is correct
7	Correct	6 ms	5120 KB	Output is correct
8	Correct	7 ms	5248 KB	Output is correct
9	Correct	8 ms	5248 KB	Output is correct
10	Correct	7 ms	5248 KB	Output is correct
11	Correct	8 ms	5120 KB	Output is correct
12	Correct	7 ms	5120 KB	Output is correct
13	Correct	7 ms	5120 KB	Output is correct
14	Correct	7 ms	5120 KB	Output is correct
15	Correct	8 ms	5172 KB	Output is correct
16	Correct	7 ms	5120 KB	Output is correct
17	Correct	7 ms	5120 KB	Output is correct
18	Correct	7 ms	5120 KB	Output is correct
19	Correct	7 ms	5120 KB	Output is correct
20	Correct	8 ms	5120 KB	Output is correct
21	Correct	10 ms	5120 KB	Output is correct

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	5248 KB	Output is correct
2	Correct	7 ms	5248 KB	Output is correct
3	Correct	6 ms	5120 KB	Output is correct
4	Correct	6 ms	5248 KB	Output is correct
5	Correct	7 ms	5120 KB	Output is correct
6	Correct	7 ms	5120 KB	Output is correct
7	Correct	6 ms	5120 KB	Output is correct
8	Correct	7 ms	5248 KB	Output is correct
9	Correct	8 ms	5248 KB	Output is correct
10	Correct	7 ms	5248 KB	Output is correct
11	Correct	8 ms	5120 KB	Output is correct
12	Correct	7 ms	5120 KB	Output is correct
13	Correct	7 ms	5120 KB	Output is correct
14	Correct	7 ms	5120 KB	Output is correct
15	Correct	8 ms	5172 KB	Output is correct
16	Correct	7 ms	5120 KB	Output is correct
17	Correct	7 ms	5120 KB	Output is correct
18	Correct	7 ms	5120 KB	Output is correct
19	Correct	7 ms	5120 KB	Output is correct
20	Correct	8 ms	5120 KB	Output is correct
21	Correct	10 ms	5120 KB	Output is correct
22	Correct	94 ms	5900 KB	Output is correct
23	Correct	79 ms	5840 KB	Output is correct
24	Correct	75 ms	5880 KB	Output is correct
25	Correct	69 ms	5852 KB	Output is correct
26	Correct	66 ms	5752 KB	Output is correct
27	Correct	75 ms	6008 KB	Output is correct
28	Correct	77 ms	5812 KB	Output is correct
29	Correct	72 ms	5880 KB	Output is correct
30	Correct	81 ms	5980 KB	Output is correct
31	Correct	63 ms	6052 KB	Output is correct

Subtask #4
19.0 / 19.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	5248 KB	Output is correct
2	Correct	7 ms	5248 KB	Output is correct
3	Correct	6 ms	5120 KB	Output is correct
4	Correct	6 ms	5248 KB	Output is correct
5	Correct	7 ms	5120 KB	Output is correct
6	Correct	7 ms	5120 KB	Output is correct
7	Correct	6 ms	5120 KB	Output is correct
8	Correct	7 ms	5248 KB	Output is correct
9	Correct	8 ms	5248 KB	Output is correct
10	Correct	7 ms	5248 KB	Output is correct
11	Correct	271 ms	27480 KB	Output is correct
12	Correct	256 ms	27600 KB	Output is correct
13	Correct	241 ms	27640 KB	Output is correct
14	Correct	253 ms	27512 KB	Output is correct
15	Correct	235 ms	27484 KB	Output is correct
16	Correct	248 ms	27656 KB	Output is correct
17	Correct	250 ms	27768 KB	Output is correct
18	Correct	247 ms	27640 KB	Output is correct
19	Correct	258 ms	27784 KB	Output is correct
20	Correct	260 ms	27920 KB	Output is correct
21	Correct	236 ms	27620 KB	Output is correct

Subtask #5
45.0 / 45.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	5248 KB	Output is correct
2	Correct	7 ms	5248 KB	Output is correct
3	Correct	6 ms	5120 KB	Output is correct
4	Correct	6 ms	5248 KB	Output is correct
5	Correct	7 ms	5120 KB	Output is correct
6	Correct	7 ms	5120 KB	Output is correct
7	Correct	6 ms	5120 KB	Output is correct
8	Correct	7 ms	5248 KB	Output is correct
9	Correct	8 ms	5248 KB	Output is correct
10	Correct	7 ms	5248 KB	Output is correct
11	Correct	8 ms	5120 KB	Output is correct
12	Correct	7 ms	5120 KB	Output is correct
13	Correct	7 ms	5120 KB	Output is correct
14	Correct	7 ms	5120 KB	Output is correct
15	Correct	8 ms	5172 KB	Output is correct
16	Correct	7 ms	5120 KB	Output is correct
17	Correct	7 ms	5120 KB	Output is correct
18	Correct	7 ms	5120 KB	Output is correct
19	Correct	7 ms	5120 KB	Output is correct
20	Correct	8 ms	5120 KB	Output is correct
21	Correct	10 ms	5120 KB	Output is correct
22	Correct	94 ms	5900 KB	Output is correct
23	Correct	79 ms	5840 KB	Output is correct
24	Correct	75 ms	5880 KB	Output is correct
25	Correct	69 ms	5852 KB	Output is correct
26	Correct	66 ms	5752 KB	Output is correct
27	Correct	75 ms	6008 KB	Output is correct
28	Correct	77 ms	5812 KB	Output is correct
29	Correct	72 ms	5880 KB	Output is correct
30	Correct	81 ms	5980 KB	Output is correct
31	Correct	63 ms	6052 KB	Output is correct
32	Correct	271 ms	27480 KB	Output is correct
33	Correct	256 ms	27600 KB	Output is correct
34	Correct	241 ms	27640 KB	Output is correct
35	Correct	253 ms	27512 KB	Output is correct
36	Correct	235 ms	27484 KB	Output is correct
37	Correct	248 ms	27656 KB	Output is correct
38	Correct	250 ms	27768 KB	Output is correct
39	Correct	247 ms	27640 KB	Output is correct
40	Correct	258 ms	27784 KB	Output is correct
41	Correct	260 ms	27920 KB	Output is correct
42	Correct	236 ms	27620 KB	Output is correct
43	Correct	200 ms	15072 KB	Output is correct
44	Correct	200 ms	14964 KB	Output is correct
45	Correct	196 ms	14968 KB	Output is correct
46	Correct	183 ms	15120 KB	Output is correct
47	Correct	178 ms	14968 KB	Output is correct
48	Correct	125 ms	12520 KB	Output is correct
49	Correct	121 ms	13212 KB	Output is correct
50	Correct	132 ms	13288 KB	Output is correct
51	Correct	267 ms	20984 KB	Output is correct

답안 #107546

Compilation message

Subtask #1 9.0 / 9.0

Subtask #2 13.0 / 13.0

Subtask #3 14.0 / 14.0

Subtask #4 19.0 / 19.0

Subtask #5 45.0 / 45.0

Subtask #1
9.0 / 9.0

Subtask #2
13.0 / 13.0

Subtask #3
14.0 / 14.0

Subtask #4
19.0 / 19.0

Subtask #5
45.0 / 45.0