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Submission #544688

# Submission time Handle Problem Language Result Execution time Memory
544688 2022-04-02T14:24:23 Z pokmui9909 None (KOI16_treeM) C++17
100 / 100
 135 ms 21920 KB 
#include<bits/stdc++.h>
using namespace std;
 
using ll = long long;
 
ll n, Q;
ll p[200005];
vector<ll> ans;
 
struct st
{
	ll t, x, y;
}qry[400005];
 
ll uf[200005];
 
ll Find(ll n)
{
	if (uf[n] == -1) return n;
	return uf[n] = Find(uf[n]);
}
 
void Union(ll x, ll y)
{
	x = Find(x), y = Find(y);
	uf[y] = x;
}
 
int main()
{
	cin.tie(0); cout.tie(0);
	ios_base::sync_with_stdio(false);
 
	cin >> n >> Q;
	fill(uf, uf + 200005, -1);
	for (ll i = 2; i <= n; i++) cin >> p[i];
	for (ll i = 1; i < n + Q; i++)
	{
		ll op; cin >> op;
		if (op == 0)
		{
			ll x; cin >> x;
			qry[i] = { 0, x, 0 };
		}
		else
		{
			ll x, y; cin >> x >> y;
			qry[i] = { 1, x, y };
		}
	}
	for (ll i = n + Q - 1; i >= 1; i--)
	{
		if (qry[i].t == 0) Union(qry[i].x, p[qry[i].x]);
		else ans.push_back(Find(qry[i].x) == Find(qry[i].y));
	}
	reverse(ans.begin(), ans.end());
	for (auto i : ans) cout << (i ? "YES\n" : "NO\n");
}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1876 KB Output is correct
2 Correct 2 ms 2004 KB Output is correct
3 Correct 2 ms 2004 KB Output is correct
4 Correct 2 ms 1940 KB Output is correct
5 Correct 2 ms 2004 KB Output is correct
6 Correct 2 ms 1876 KB Output is correct
7 Correct 2 ms 1944 KB Output is correct
8 Correct 1 ms 1876 KB Output is correct
9 Correct 2 ms 2004 KB Output is correct
10 Correct 1 ms 1880 KB Output is correct
11 Correct 2 ms 1876 KB Output is correct
12 Correct 2 ms 1876 KB Output is correct
13 Correct 2 ms 1876 KB Output is correct
14 Correct 2 ms 1876 KB Output is correct
15 Correct 1 ms 1880 KB Output is correct
16 Correct 1 ms 1876 KB Output is correct
17 Correct 2 ms 1884 KB Output is correct
18 Correct 2 ms 1876 KB Output is correct
19 Correct 2 ms 2004 KB Output is correct
20 Correct 2 ms 1888 KB Output is correct
21 Correct 2 ms 1876 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1876 KB Output is correct
2 Correct 2 ms 2004 KB Output is correct
3 Correct 2 ms 2004 KB Output is correct
4 Correct 2 ms 1940 KB Output is correct
5 Correct 2 ms 2004 KB Output is correct
6 Correct 2 ms 1876 KB Output is correct
7 Correct 2 ms 1944 KB Output is correct
8 Correct 1 ms 1876 KB Output is correct
9 Correct 2 ms 2004 KB Output is correct
10 Correct 1 ms 1880 KB Output is correct
11 Correct 2 ms 1876 KB Output is correct
12 Correct 2 ms 1876 KB Output is correct
13 Correct 2 ms 1876 KB Output is correct
14 Correct 2 ms 1876 KB Output is correct
15 Correct 1 ms 1880 KB Output is correct
16 Correct 1 ms 1876 KB Output is correct
17 Correct 2 ms 1884 KB Output is correct
18 Correct 2 ms 1876 KB Output is correct
19 Correct 2 ms 2004 KB Output is correct
20 Correct 2 ms 1888 KB Output is correct
21 Correct 2 ms 1876 KB Output is correct
22 Correct 48 ms 11240 KB Output is correct
23 Correct 45 ms 11204 KB Output is correct
24 Correct 51 ms 11132 KB Output is correct
25 Correct 47 ms 11200 KB Output is correct
26 Correct 48 ms 11204 KB Output is correct
27 Correct 49 ms 11300 KB Output is correct
28 Correct 54 ms 11172 KB Output is correct
29 Correct 45 ms 11248 KB Output is correct
30 Correct 47 ms 11320 KB Output is correct
31 Correct 46 ms 11296 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 20664 KB Output is correct
2 Correct 98 ms 20576 KB Output is correct
3 Correct 107 ms 20592 KB Output is correct
4 Correct 107 ms 20564 KB Output is correct
5 Correct 97 ms 20560 KB Output is correct
6 Correct 101 ms 20588 KB Output is correct
7 Correct 108 ms 20676 KB Output is correct
8 Correct 97 ms 21004 KB Output is correct
9 Correct 94 ms 20620 KB Output is correct
10 Correct 99 ms 21844 KB Output is correct
11 Correct 96 ms 20652 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1876 KB Output is correct
2 Correct 2 ms 2004 KB Output is correct
3 Correct 2 ms 2004 KB Output is correct
4 Correct 2 ms 1940 KB Output is correct
5 Correct 2 ms 2004 KB Output is correct
6 Correct 2 ms 1876 KB Output is correct
7 Correct 2 ms 1944 KB Output is correct
8 Correct 1 ms 1876 KB Output is correct
9 Correct 2 ms 2004 KB Output is correct
10 Correct 1 ms 1880 KB Output is correct
11 Correct 2 ms 1876 KB Output is correct
12 Correct 2 ms 1876 KB Output is correct
13 Correct 2 ms 1876 KB Output is correct
14 Correct 2 ms 1876 KB Output is correct
15 Correct 1 ms 1880 KB Output is correct
16 Correct 1 ms 1876 KB Output is correct
17 Correct 2 ms 1884 KB Output is correct
18 Correct 2 ms 1876 KB Output is correct
19 Correct 2 ms 2004 KB Output is correct
20 Correct 2 ms 1888 KB Output is correct
21 Correct 2 ms 1876 KB Output is correct
22 Correct 48 ms 11240 KB Output is correct
23 Correct 45 ms 11204 KB Output is correct
24 Correct 51 ms 11132 KB Output is correct
25 Correct 47 ms 11200 KB Output is correct
26 Correct 48 ms 11204 KB Output is correct
27 Correct 49 ms 11300 KB Output is correct
28 Correct 54 ms 11172 KB Output is correct
29 Correct 45 ms 11248 KB Output is correct
30 Correct 47 ms 11320 KB Output is correct
31 Correct 46 ms 11296 KB Output is correct
32 Correct 101 ms 20664 KB Output is correct
33 Correct 98 ms 20576 KB Output is correct
34 Correct 107 ms 20592 KB Output is correct
35 Correct 107 ms 20564 KB Output is correct
36 Correct 97 ms 20560 KB Output is correct
37 Correct 101 ms 20588 KB Output is correct
38 Correct 108 ms 20676 KB Output is correct
39 Correct 97 ms 21004 KB Output is correct
40 Correct 94 ms 20620 KB Output is correct
41 Correct 99 ms 21844 KB Output is correct
42 Correct 96 ms 20652 KB Output is correct
43 Correct 122 ms 21204 KB Output is correct
44 Correct 135 ms 21204 KB Output is correct
45 Correct 113 ms 21220 KB Output is correct
46 Correct 105 ms 21196 KB Output is correct
47 Correct 128 ms 21272 KB Output is correct
48 Correct 101 ms 21068 KB Output is correct
49 Correct 97 ms 21228 KB Output is correct
50 Correct 103 ms 21240 KB Output is correct
51 Correct 107 ms 21920 KB Output is correct