oj.uz

Submission #642305

# Submission time Handle Problem Language Result Execution time Memory
642305 2022-09-19T08:21:44 Z dozer Joker (BOI20_joker) C++14
14 / 100
 468 ms 262144 KB 
#include <bits/stdc++.h>
using namespace std;
#define fileio() freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout)
#define fastio() cin.tie(0), ios_base::sync_with_stdio(0)
#define sp " "
#define endl "\n"
#define pb push_back
#define pii pair<int, int>
#define st first
#define nd second
#define N 400005

const int modulo = 1e9 + 7;
int ans[N], u[N], v[N], l[N], r[N], n;
vector<int> ind[N], root, gh[N];
map<int, int> res[N];

int find(vector<int> &b, int node)
{
	if (node < 0) return -(find(b, -node));
	if (node == b[node]) return node;
	if (node == -b[node]) return 0;
	return b[node] = find(b, b[node]);
}


int32_t main()
{
	fastio();


	int m, q;
	cin>>n>>m>>q;
	root.resize(n + 5, 0);
	for (int i = 1; i <= n; i++)
		root[i] = i;

	for (int i = 1; i <= m; i++)
	{
		cin>>u[i]>>v[i];
	}

	for (int i = 1; i <= q; i++)
	{
		cin>>l[i]>>r[i];
		ind[r[i]].pb(l[i]);
	}

	for (int i = m; i >= 1; i--)
	{
		if (ind[i].size() > 0)
		{
			for (auto j : root) gh[i].pb(j);
		}
		if (ans[i] == 1) 
		{
			ans[i - 1] = 1;
			continue;
		}
		int a = find(root, u[i]), b = find(root, v[i]);
		if (a == b) 
		{
			ans[i - 1] = 1;
		}
		else
		{
			if (a < 0) a *= -1, b *= -1;
			root[a] = -b;
		}
		//cout<<i<<sp<<ans[i]<<endl;
	}

	for (int i = m; i >= 1; i--)
	{
		sort(ind[i].begin(), ind[i].end());
		if (gh[i].empty() || ans[i] == 1) continue;
		int last = 1;
		for (auto j : ind[i])
		{
			if (res[i][last] == 1) 
			{
				res[i][j] = 1;
				last = j;
				continue;
			}
			for (int k = last; k < j; k++)
			{
				int a = find(gh[i], u[k]), b = find(gh[i], v[k]);
				if (a == b)
				{
					res[i][j] = 1;
					break;
				} 
				if (a < 0) a *= -1, b *= -1;
				gh[i][a] = -b;
			}
			last = j;
		}
	}

	for (int i = 1; i <= q; i++)
	{
		if (res[r[i]][l[i]] || ans[r[i]]) cout<<"YES\n";
		else cout<<"NO\n";
	}
	cerr<<"time taken : "<<(float)clock() / CLOCKS_PER_SEC<<" seconds\n";
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 37844 KB Output is correct
2 Correct 18 ms 37824 KB Output is correct
3 Correct 17 ms 37836 KB Output is correct
4 Correct 20 ms 37928 KB Output is correct
5 Correct 19 ms 37800 KB Output is correct
6 Correct 18 ms 37888 KB Output is correct
7 Correct 26 ms 38020 KB Output is correct
8 Correct 22 ms 37964 KB Output is correct
9 Correct 20 ms 37972 KB Output is correct
10 Correct 22 ms 37864 KB Output is correct
11 Correct 19 ms 37912 KB Output is correct
12 Correct 19 ms 38024 KB Output is correct
13 Correct 20 ms 37904 KB Output is correct
14 Correct 21 ms 37972 KB Output is correct
15 Correct 22 ms 38028 KB Output is correct
16 Correct 25 ms 37972 KB Output is correct
17 Correct 21 ms 37960 KB Output is correct
18 Correct 20 ms 37948 KB Output is correct
19 Correct 25 ms 37972 KB Output is correct
20 Correct 21 ms 37972 KB Output is correct
21 Correct 26 ms 37996 KB Output is correct
22 Correct 20 ms 38000 KB Output is correct
23 Correct 20 ms 37972 KB Output is correct
24 Correct 20 ms 37872 KB Output is correct
25 Correct 20 ms 37972 KB Output is correct
26 Correct 22 ms 37972 KB Output is correct
27 Correct 21 ms 37904 KB Output is correct
28 Correct 20 ms 37988 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 37844 KB Output is correct
2 Correct 18 ms 37824 KB Output is correct
3 Correct 17 ms 37836 KB Output is correct
4 Correct 20 ms 37928 KB Output is correct
5 Correct 19 ms 37800 KB Output is correct
6 Correct 18 ms 37888 KB Output is correct
7 Correct 26 ms 38020 KB Output is correct
8 Correct 22 ms 37964 KB Output is correct
9 Correct 20 ms 37972 KB Output is correct
10 Correct 22 ms 37864 KB Output is correct
11 Correct 19 ms 37912 KB Output is correct
12 Correct 19 ms 38024 KB Output is correct
13 Correct 20 ms 37904 KB Output is correct
14 Correct 21 ms 37972 KB Output is correct
15 Correct 22 ms 38028 KB Output is correct
16 Correct 25 ms 37972 KB Output is correct
17 Correct 21 ms 37960 KB Output is correct
18 Correct 20 ms 37948 KB Output is correct
19 Correct 25 ms 37972 KB Output is correct
20 Correct 21 ms 37972 KB Output is correct
21 Correct 26 ms 37996 KB Output is correct
22 Correct 20 ms 38000 KB Output is correct
23 Correct 20 ms 37972 KB Output is correct
24 Correct 20 ms 37872 KB Output is correct
25 Correct 20 ms 37972 KB Output is correct
26 Correct 22 ms 37972 KB Output is correct
27 Correct 21 ms 37904 KB Output is correct
28 Correct 20 ms 37988 KB Output is correct
29 Correct 43 ms 44792 KB Output is correct
30 Correct 32 ms 42288 KB Output is correct
31 Correct 39 ms 42520 KB Output is correct
32 Correct 28 ms 40228 KB Output is correct
33 Correct 31 ms 40020 KB Output is correct
34 Correct 36 ms 41964 KB Output is correct
35 Correct 39 ms 42744 KB Output is correct
36 Correct 30 ms 40308 KB Output is correct
37 Correct 48 ms 44748 KB Output is correct
38 Correct 66 ms 48224 KB Output is correct
39 Correct 33 ms 41928 KB Output is correct
40 Correct 32 ms 40120 KB Output is correct
41 Correct 27 ms 40000 KB Output is correct
42 Correct 26 ms 39968 KB Output is correct
43 Correct 35 ms 43068 KB Output is correct
44 Correct 31 ms 43100 KB Output is correct
45 Correct 36 ms 47996 KB Output is correct
46 Correct 45 ms 47980 KB Output is correct
47 Correct 26 ms 40148 KB Output is correct
48 Correct 35 ms 40360 KB Output is correct
49 Correct 28 ms 42368 KB Output is correct
50 Correct 31 ms 42340 KB Output is correct
51 Correct 25 ms 40088 KB Output is correct
52 Correct 28 ms 40264 KB Output is correct
53 Correct 39 ms 42428 KB Output is correct
54 Correct 34 ms 42520 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 37844 KB Output is correct
2 Correct 18 ms 37824 KB Output is correct
3 Runtime error 468 ms 262144 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 37844 KB Output is correct
2 Correct 18 ms 37824 KB Output is correct
3 Correct 17 ms 37836 KB Output is correct
4 Correct 20 ms 37928 KB Output is correct
5 Correct 19 ms 37800 KB Output is correct
6 Correct 18 ms 37888 KB Output is correct
7 Correct 26 ms 38020 KB Output is correct
8 Correct 22 ms 37964 KB Output is correct
9 Correct 20 ms 37972 KB Output is correct
10 Correct 22 ms 37864 KB Output is correct
11 Correct 19 ms 37912 KB Output is correct
12 Correct 19 ms 38024 KB Output is correct
13 Correct 20 ms 37904 KB Output is correct
14 Correct 21 ms 37972 KB Output is correct
15 Correct 22 ms 38028 KB Output is correct
16 Correct 25 ms 37972 KB Output is correct
17 Correct 21 ms 37960 KB Output is correct
18 Correct 20 ms 37948 KB Output is correct
19 Correct 25 ms 37972 KB Output is correct
20 Correct 21 ms 37972 KB Output is correct
21 Correct 26 ms 37996 KB Output is correct
22 Correct 20 ms 38000 KB Output is correct
23 Correct 20 ms 37972 KB Output is correct
24 Correct 20 ms 37872 KB Output is correct
25 Correct 20 ms 37972 KB Output is correct
26 Correct 22 ms 37972 KB Output is correct
27 Correct 21 ms 37904 KB Output is correct
28 Correct 20 ms 37988 KB Output is correct
29 Runtime error 468 ms 262144 KB Execution killed with signal 9
30 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 37844 KB Output is correct
2 Correct 18 ms 37824 KB Output is correct
3 Correct 17 ms 37836 KB Output is correct
4 Correct 20 ms 37928 KB Output is correct
5 Correct 19 ms 37800 KB Output is correct
6 Correct 18 ms 37888 KB Output is correct
7 Correct 26 ms 38020 KB Output is correct
8 Correct 22 ms 37964 KB Output is correct
9 Correct 20 ms 37972 KB Output is correct
10 Correct 22 ms 37864 KB Output is correct
11 Correct 19 ms 37912 KB Output is correct
12 Correct 19 ms 38024 KB Output is correct
13 Correct 20 ms 37904 KB Output is correct
14 Correct 21 ms 37972 KB Output is correct
15 Correct 22 ms 38028 KB Output is correct
16 Correct 25 ms 37972 KB Output is correct
17 Correct 21 ms 37960 KB Output is correct
18 Correct 20 ms 37948 KB Output is correct
19 Correct 25 ms 37972 KB Output is correct
20 Correct 21 ms 37972 KB Output is correct
21 Correct 26 ms 37996 KB Output is correct
22 Correct 20 ms 38000 KB Output is correct
23 Correct 20 ms 37972 KB Output is correct
24 Correct 20 ms 37872 KB Output is correct
25 Correct 20 ms 37972 KB Output is correct
26 Correct 22 ms 37972 KB Output is correct
27 Correct 21 ms 37904 KB Output is correct
28 Correct 20 ms 37988 KB Output is correct
29 Correct 43 ms 44792 KB Output is correct
30 Correct 32 ms 42288 KB Output is correct
31 Correct 39 ms 42520 KB Output is correct
32 Correct 28 ms 40228 KB Output is correct
33 Correct 31 ms 40020 KB Output is correct
34 Correct 36 ms 41964 KB Output is correct
35 Correct 39 ms 42744 KB Output is correct
36 Correct 30 ms 40308 KB Output is correct
37 Correct 48 ms 44748 KB Output is correct
38 Correct 66 ms 48224 KB Output is correct
39 Correct 33 ms 41928 KB Output is correct
40 Correct 32 ms 40120 KB Output is correct
41 Correct 27 ms 40000 KB Output is correct
42 Correct 26 ms 39968 KB Output is correct
43 Correct 35 ms 43068 KB Output is correct
44 Correct 31 ms 43100 KB Output is correct
45 Correct 36 ms 47996 KB Output is correct
46 Correct 45 ms 47980 KB Output is correct
47 Correct 26 ms 40148 KB Output is correct
48 Correct 35 ms 40360 KB Output is correct
49 Correct 28 ms 42368 KB Output is correct
50 Correct 31 ms 42340 KB Output is correct
51 Correct 25 ms 40088 KB Output is correct
52 Correct 28 ms 40264 KB Output is correct
53 Correct 39 ms 42428 KB Output is correct
54 Correct 34 ms 42520 KB Output is correct
55 Runtime error 379 ms 262144 KB Execution killed with signal 9
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 37844 KB Output is correct
2 Correct 18 ms 37824 KB Output is correct
3 Correct 17 ms 37836 KB Output is correct
4 Correct 20 ms 37928 KB Output is correct
5 Correct 19 ms 37800 KB Output is correct
6 Correct 18 ms 37888 KB Output is correct
7 Correct 26 ms 38020 KB Output is correct
8 Correct 22 ms 37964 KB Output is correct
9 Correct 20 ms 37972 KB Output is correct
10 Correct 22 ms 37864 KB Output is correct
11 Correct 19 ms 37912 KB Output is correct
12 Correct 19 ms 38024 KB Output is correct
13 Correct 20 ms 37904 KB Output is correct
14 Correct 21 ms 37972 KB Output is correct
15 Correct 22 ms 38028 KB Output is correct
16 Correct 25 ms 37972 KB Output is correct
17 Correct 21 ms 37960 KB Output is correct
18 Correct 20 ms 37948 KB Output is correct
19 Correct 25 ms 37972 KB Output is correct
20 Correct 21 ms 37972 KB Output is correct
21 Correct 26 ms 37996 KB Output is correct
22 Correct 20 ms 38000 KB Output is correct
23 Correct 20 ms 37972 KB Output is correct
24 Correct 20 ms 37872 KB Output is correct
25 Correct 20 ms 37972 KB Output is correct
26 Correct 22 ms 37972 KB Output is correct
27 Correct 21 ms 37904 KB Output is correct
28 Correct 20 ms 37988 KB Output is correct
29 Correct 43 ms 44792 KB Output is correct
30 Correct 32 ms 42288 KB Output is correct
31 Correct 39 ms 42520 KB Output is correct
32 Correct 28 ms 40228 KB Output is correct
33 Correct 31 ms 40020 KB Output is correct
34 Correct 36 ms 41964 KB Output is correct
35 Correct 39 ms 42744 KB Output is correct
36 Correct 30 ms 40308 KB Output is correct
37 Correct 48 ms 44748 KB Output is correct
38 Correct 66 ms 48224 KB Output is correct
39 Correct 33 ms 41928 KB Output is correct
40 Correct 32 ms 40120 KB Output is correct
41 Correct 27 ms 40000 KB Output is correct
42 Correct 26 ms 39968 KB Output is correct
43 Correct 35 ms 43068 KB Output is correct
44 Correct 31 ms 43100 KB Output is correct
45 Correct 36 ms 47996 KB Output is correct
46 Correct 45 ms 47980 KB Output is correct
47 Correct 26 ms 40148 KB Output is correct
48 Correct 35 ms 40360 KB Output is correct
49 Correct 28 ms 42368 KB Output is correct
50 Correct 31 ms 42340 KB Output is correct
51 Correct 25 ms 40088 KB Output is correct
52 Correct 28 ms 40264 KB Output is correct
53 Correct 39 ms 42428 KB Output is correct
54 Correct 34 ms 42520 KB Output is correct
55 Runtime error 468 ms 262144 KB Execution killed with signal 9
56 Halted 0 ms 0 KB -