Submission #107536

# Submission time Handle Problem Language Result Execution time Memory
107536 2019-04-25T01:49:58 Z aer0park None (KOI16_tree) C++14
36 / 100
315 ms 27896 KB
#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-=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++)
              ~^~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 6 ms 5120 KB Output is correct
2 Correct 6 ms 5120 KB Output is correct
3 Correct 6 ms 5120 KB Output is correct
4 Correct 6 ms 5248 KB Output is correct
5 Correct 6 ms 5248 KB Output is correct
6 Correct 7 ms 5248 KB Output is correct
7 Correct 7 ms 5248 KB Output is correct
8 Correct 6 ms 5248 KB Output is correct
9 Correct 8 ms 5248 KB Output is correct
10 Correct 6 ms 5248 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 6 ms 5120 KB Output is correct
2 Correct 6 ms 5120 KB Output is correct
3 Correct 6 ms 5120 KB Output is correct
4 Correct 6 ms 5248 KB Output is correct
5 Correct 6 ms 5248 KB Output is correct
6 Correct 7 ms 5248 KB Output is correct
7 Correct 7 ms 5248 KB Output is correct
8 Correct 6 ms 5248 KB Output is correct
9 Correct 8 ms 5248 KB Output is correct
10 Correct 6 ms 5248 KB Output is correct
11 Correct 9 ms 5120 KB Output is correct
12 Correct 9 ms 5120 KB Output is correct
13 Correct 7 ms 5120 KB Output is correct
14 Correct 8 ms 5120 KB Output is correct
15 Correct 6 ms 5120 KB Output is correct
16 Correct 6 ms 5120 KB Output is correct
17 Correct 6 ms 5120 KB Output is correct
18 Correct 7 ms 5120 KB Output is correct
19 Correct 9 ms 5120 KB Output is correct
20 Correct 9 ms 5120 KB Output is correct
21 Correct 7 ms 5120 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 6 ms 5120 KB Output is correct
2 Correct 6 ms 5120 KB Output is correct
3 Correct 6 ms 5120 KB Output is correct
4 Correct 6 ms 5248 KB Output is correct
5 Correct 6 ms 5248 KB Output is correct
6 Correct 7 ms 5248 KB Output is correct
7 Correct 7 ms 5248 KB Output is correct
8 Correct 6 ms 5248 KB Output is correct
9 Correct 8 ms 5248 KB Output is correct
10 Correct 6 ms 5248 KB Output is correct
11 Correct 9 ms 5120 KB Output is correct
12 Correct 9 ms 5120 KB Output is correct
13 Correct 7 ms 5120 KB Output is correct
14 Correct 8 ms 5120 KB Output is correct
15 Correct 6 ms 5120 KB Output is correct
16 Correct 6 ms 5120 KB Output is correct
17 Correct 6 ms 5120 KB Output is correct
18 Correct 7 ms 5120 KB Output is correct
19 Correct 9 ms 5120 KB Output is correct
20 Correct 9 ms 5120 KB Output is correct
21 Correct 7 ms 5120 KB Output is correct
22 Correct 76 ms 5752 KB Output is correct
23 Correct 76 ms 5864 KB Output is correct
24 Correct 94 ms 5752 KB Output is correct
25 Correct 127 ms 5872 KB Output is correct
26 Correct 80 ms 5752 KB Output is correct
27 Correct 82 ms 5880 KB Output is correct
28 Correct 72 ms 5880 KB Output is correct
29 Correct 79 ms 5952 KB Output is correct
30 Correct 83 ms 6136 KB Output is correct
31 Correct 122 ms 6008 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 6 ms 5120 KB Output is correct
2 Correct 6 ms 5120 KB Output is correct
3 Correct 6 ms 5120 KB Output is correct
4 Correct 6 ms 5248 KB Output is correct
5 Correct 6 ms 5248 KB Output is correct
6 Correct 7 ms 5248 KB Output is correct
7 Correct 7 ms 5248 KB Output is correct
8 Correct 6 ms 5248 KB Output is correct
9 Correct 8 ms 5248 KB Output is correct
10 Correct 6 ms 5248 KB Output is correct
11 Correct 273 ms 27512 KB Output is correct
12 Correct 294 ms 27592 KB Output is correct
13 Correct 273 ms 27512 KB Output is correct
14 Correct 304 ms 27640 KB Output is correct
15 Correct 315 ms 27512 KB Output is correct
16 Correct 251 ms 27728 KB Output is correct
17 Correct 233 ms 27768 KB Output is correct
18 Incorrect 226 ms 27896 KB Output isn't correct
19 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 6 ms 5120 KB Output is correct
2 Correct 6 ms 5120 KB Output is correct
3 Correct 6 ms 5120 KB Output is correct
4 Correct 6 ms 5248 KB Output is correct
5 Correct 6 ms 5248 KB Output is correct
6 Correct 7 ms 5248 KB Output is correct
7 Correct 7 ms 5248 KB Output is correct
8 Correct 6 ms 5248 KB Output is correct
9 Correct 8 ms 5248 KB Output is correct
10 Correct 6 ms 5248 KB Output is correct
11 Correct 9 ms 5120 KB Output is correct
12 Correct 9 ms 5120 KB Output is correct
13 Correct 7 ms 5120 KB Output is correct
14 Correct 8 ms 5120 KB Output is correct
15 Correct 6 ms 5120 KB Output is correct
16 Correct 6 ms 5120 KB Output is correct
17 Correct 6 ms 5120 KB Output is correct
18 Correct 7 ms 5120 KB Output is correct
19 Correct 9 ms 5120 KB Output is correct
20 Correct 9 ms 5120 KB Output is correct
21 Correct 7 ms 5120 KB Output is correct
22 Correct 76 ms 5752 KB Output is correct
23 Correct 76 ms 5864 KB Output is correct
24 Correct 94 ms 5752 KB Output is correct
25 Correct 127 ms 5872 KB Output is correct
26 Correct 80 ms 5752 KB Output is correct
27 Correct 82 ms 5880 KB Output is correct
28 Correct 72 ms 5880 KB Output is correct
29 Correct 79 ms 5952 KB Output is correct
30 Correct 83 ms 6136 KB Output is correct
31 Correct 122 ms 6008 KB Output is correct
32 Correct 273 ms 27512 KB Output is correct
33 Correct 294 ms 27592 KB Output is correct
34 Correct 273 ms 27512 KB Output is correct
35 Correct 304 ms 27640 KB Output is correct
36 Correct 315 ms 27512 KB Output is correct
37 Correct 251 ms 27728 KB Output is correct
38 Correct 233 ms 27768 KB Output is correct
39 Incorrect 226 ms 27896 KB Output isn't correct
40 Halted 0 ms 0 KB -