oj.uz

Submission #642291

# Submission time Handle Problem Language Result Execution time Memory
642291 2022-09-19T07:59:26 Z dozer Joker (BOI20_joker) C++14
14 / 100
 158 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 200005

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] && node > 0) return n + 1;
	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--)
	{
		sort(ind[i].begin(), ind[i].end());
		if (ind[i].size() > 0)
		{
			vector<int> tmp(root.begin(), root.end());
			gh[i] = tmp;

		}
		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--)
	{
		if (gh[i].empty()) continue;
		int last = 1;
		for (auto j : ind[i])
		{
			if (ans[i] == 1 || res[i][last] == 1) 
			{
				res[i][j] = 1;
				continue;
			}
			for (int k = last; k < j && res[i][j] == 0; k++)
			{
				int a = find(gh[i], u[k]), b = find(gh[i], v[k]);
				if (a == b) res[i][j] = 1;
				else
				{
					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]]) 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 10 ms 19028 KB Output is correct
2 Correct 10 ms 19028 KB Output is correct
3 Correct 9 ms 19028 KB Output is correct
4 Correct 9 ms 19028 KB Output is correct
5 Correct 11 ms 19052 KB Output is correct
6 Correct 11 ms 19028 KB Output is correct
7 Correct 10 ms 19116 KB Output is correct
8 Correct 10 ms 19156 KB Output is correct
9 Correct 10 ms 19088 KB Output is correct
10 Correct 11 ms 19156 KB Output is correct
11 Correct 9 ms 19156 KB Output is correct
12 Correct 11 ms 19156 KB Output is correct
13 Correct 10 ms 19104 KB Output is correct
14 Correct 10 ms 19204 KB Output is correct
15 Correct 9 ms 19156 KB Output is correct
16 Correct 9 ms 19156 KB Output is correct
17 Correct 11 ms 19156 KB Output is correct
18 Correct 9 ms 19156 KB Output is correct
19 Correct 9 ms 19156 KB Output is correct
20 Correct 9 ms 19156 KB Output is correct
21 Correct 10 ms 19088 KB Output is correct
22 Correct 10 ms 19156 KB Output is correct
23 Correct 10 ms 19156 KB Output is correct
24 Correct 11 ms 19284 KB Output is correct
25 Correct 9 ms 19196 KB Output is correct
26 Correct 10 ms 19156 KB Output is correct
27 Correct 11 ms 19156 KB Output is correct
28 Correct 10 ms 19156 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 19028 KB Output is correct
2 Correct 10 ms 19028 KB Output is correct
3 Correct 9 ms 19028 KB Output is correct
4 Correct 9 ms 19028 KB Output is correct
5 Correct 11 ms 19052 KB Output is correct
6 Correct 11 ms 19028 KB Output is correct
7 Correct 10 ms 19116 KB Output is correct
8 Correct 10 ms 19156 KB Output is correct
9 Correct 10 ms 19088 KB Output is correct
10 Correct 11 ms 19156 KB Output is correct
11 Correct 9 ms 19156 KB Output is correct
12 Correct 11 ms 19156 KB Output is correct
13 Correct 10 ms 19104 KB Output is correct
14 Correct 10 ms 19204 KB Output is correct
15 Correct 9 ms 19156 KB Output is correct
16 Correct 9 ms 19156 KB Output is correct
17 Correct 11 ms 19156 KB Output is correct
18 Correct 9 ms 19156 KB Output is correct
19 Correct 9 ms 19156 KB Output is correct
20 Correct 9 ms 19156 KB Output is correct
21 Correct 10 ms 19088 KB Output is correct
22 Correct 10 ms 19156 KB Output is correct
23 Correct 10 ms 19156 KB Output is correct
24 Correct 11 ms 19284 KB Output is correct
25 Correct 9 ms 19196 KB Output is correct
26 Correct 10 ms 19156 KB Output is correct
27 Correct 11 ms 19156 KB Output is correct
28 Correct 10 ms 19156 KB Output is correct
29 Correct 24 ms 25940 KB Output is correct
30 Correct 19 ms 23368 KB Output is correct
31 Correct 18 ms 22740 KB Output is correct
32 Correct 14 ms 21388 KB Output is correct
33 Correct 12 ms 20332 KB Output is correct
34 Correct 16 ms 23104 KB Output is correct
35 Correct 21 ms 23824 KB Output is correct
36 Correct 16 ms 21336 KB Output is correct
37 Correct 27 ms 25720 KB Output is correct
38 Correct 56 ms 29280 KB Output is correct
39 Correct 14 ms 22740 KB Output is correct
40 Correct 16 ms 21192 KB Output is correct
41 Correct 15 ms 21112 KB Output is correct
42 Correct 12 ms 21152 KB Output is correct
43 Correct 13 ms 22228 KB Output is correct
44 Correct 15 ms 24104 KB Output is correct
45 Correct 18 ms 27016 KB Output is correct
46 Correct 28 ms 29084 KB Output is correct
47 Correct 15 ms 20948 KB Output is correct
48 Correct 18 ms 21460 KB Output is correct
49 Correct 18 ms 22228 KB Output is correct
50 Correct 19 ms 23464 KB Output is correct
51 Correct 15 ms 20620 KB Output is correct
52 Correct 16 ms 21332 KB Output is correct
53 Correct 18 ms 22236 KB Output is correct
54 Correct 22 ms 23680 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 19028 KB Output is correct
2 Correct 10 ms 19028 KB Output is correct
3 Runtime error 158 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 10 ms 19028 KB Output is correct
2 Correct 10 ms 19028 KB Output is correct
3 Correct 9 ms 19028 KB Output is correct
4 Correct 9 ms 19028 KB Output is correct
5 Correct 11 ms 19052 KB Output is correct
6 Correct 11 ms 19028 KB Output is correct
7 Correct 10 ms 19116 KB Output is correct
8 Correct 10 ms 19156 KB Output is correct
9 Correct 10 ms 19088 KB Output is correct
10 Correct 11 ms 19156 KB Output is correct
11 Correct 9 ms 19156 KB Output is correct
12 Correct 11 ms 19156 KB Output is correct
13 Correct 10 ms 19104 KB Output is correct
14 Correct 10 ms 19204 KB Output is correct
15 Correct 9 ms 19156 KB Output is correct
16 Correct 9 ms 19156 KB Output is correct
17 Correct 11 ms 19156 KB Output is correct
18 Correct 9 ms 19156 KB Output is correct
19 Correct 9 ms 19156 KB Output is correct
20 Correct 9 ms 19156 KB Output is correct
21 Correct 10 ms 19088 KB Output is correct
22 Correct 10 ms 19156 KB Output is correct
23 Correct 10 ms 19156 KB Output is correct
24 Correct 11 ms 19284 KB Output is correct
25 Correct 9 ms 19196 KB Output is correct
26 Correct 10 ms 19156 KB Output is correct
27 Correct 11 ms 19156 KB Output is correct
28 Correct 10 ms 19156 KB Output is correct
29 Runtime error 158 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 10 ms 19028 KB Output is correct
2 Correct 10 ms 19028 KB Output is correct
3 Correct 9 ms 19028 KB Output is correct
4 Correct 9 ms 19028 KB Output is correct
5 Correct 11 ms 19052 KB Output is correct
6 Correct 11 ms 19028 KB Output is correct
7 Correct 10 ms 19116 KB Output is correct
8 Correct 10 ms 19156 KB Output is correct
9 Correct 10 ms 19088 KB Output is correct
10 Correct 11 ms 19156 KB Output is correct
11 Correct 9 ms 19156 KB Output is correct
12 Correct 11 ms 19156 KB Output is correct
13 Correct 10 ms 19104 KB Output is correct
14 Correct 10 ms 19204 KB Output is correct
15 Correct 9 ms 19156 KB Output is correct
16 Correct 9 ms 19156 KB Output is correct
17 Correct 11 ms 19156 KB Output is correct
18 Correct 9 ms 19156 KB Output is correct
19 Correct 9 ms 19156 KB Output is correct
20 Correct 9 ms 19156 KB Output is correct
21 Correct 10 ms 19088 KB Output is correct
22 Correct 10 ms 19156 KB Output is correct
23 Correct 10 ms 19156 KB Output is correct
24 Correct 11 ms 19284 KB Output is correct
25 Correct 9 ms 19196 KB Output is correct
26 Correct 10 ms 19156 KB Output is correct
27 Correct 11 ms 19156 KB Output is correct
28 Correct 10 ms 19156 KB Output is correct
29 Correct 24 ms 25940 KB Output is correct
30 Correct 19 ms 23368 KB Output is correct
31 Correct 18 ms 22740 KB Output is correct
32 Correct 14 ms 21388 KB Output is correct
33 Correct 12 ms 20332 KB Output is correct
34 Correct 16 ms 23104 KB Output is correct
35 Correct 21 ms 23824 KB Output is correct
36 Correct 16 ms 21336 KB Output is correct
37 Correct 27 ms 25720 KB Output is correct
38 Correct 56 ms 29280 KB Output is correct
39 Correct 14 ms 22740 KB Output is correct
40 Correct 16 ms 21192 KB Output is correct
41 Correct 15 ms 21112 KB Output is correct
42 Correct 12 ms 21152 KB Output is correct
43 Correct 13 ms 22228 KB Output is correct
44 Correct 15 ms 24104 KB Output is correct
45 Correct 18 ms 27016 KB Output is correct
46 Correct 28 ms 29084 KB Output is correct
47 Correct 15 ms 20948 KB Output is correct
48 Correct 18 ms 21460 KB Output is correct
49 Correct 18 ms 22228 KB Output is correct
50 Correct 19 ms 23464 KB Output is correct
51 Correct 15 ms 20620 KB Output is correct
52 Correct 16 ms 21332 KB Output is correct
53 Correct 18 ms 22236 KB Output is correct
54 Correct 22 ms 23680 KB Output is correct
55 Runtime error 126 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 10 ms 19028 KB Output is correct
2 Correct 10 ms 19028 KB Output is correct
3 Correct 9 ms 19028 KB Output is correct
4 Correct 9 ms 19028 KB Output is correct
5 Correct 11 ms 19052 KB Output is correct
6 Correct 11 ms 19028 KB Output is correct
7 Correct 10 ms 19116 KB Output is correct
8 Correct 10 ms 19156 KB Output is correct
9 Correct 10 ms 19088 KB Output is correct
10 Correct 11 ms 19156 KB Output is correct
11 Correct 9 ms 19156 KB Output is correct
12 Correct 11 ms 19156 KB Output is correct
13 Correct 10 ms 19104 KB Output is correct
14 Correct 10 ms 19204 KB Output is correct
15 Correct 9 ms 19156 KB Output is correct
16 Correct 9 ms 19156 KB Output is correct
17 Correct 11 ms 19156 KB Output is correct
18 Correct 9 ms 19156 KB Output is correct
19 Correct 9 ms 19156 KB Output is correct
20 Correct 9 ms 19156 KB Output is correct
21 Correct 10 ms 19088 KB Output is correct
22 Correct 10 ms 19156 KB Output is correct
23 Correct 10 ms 19156 KB Output is correct
24 Correct 11 ms 19284 KB Output is correct
25 Correct 9 ms 19196 KB Output is correct
26 Correct 10 ms 19156 KB Output is correct
27 Correct 11 ms 19156 KB Output is correct
28 Correct 10 ms 19156 KB Output is correct
29 Correct 24 ms 25940 KB Output is correct
30 Correct 19 ms 23368 KB Output is correct
31 Correct 18 ms 22740 KB Output is correct
32 Correct 14 ms 21388 KB Output is correct
33 Correct 12 ms 20332 KB Output is correct
34 Correct 16 ms 23104 KB Output is correct
35 Correct 21 ms 23824 KB Output is correct
36 Correct 16 ms 21336 KB Output is correct
37 Correct 27 ms 25720 KB Output is correct
38 Correct 56 ms 29280 KB Output is correct
39 Correct 14 ms 22740 KB Output is correct
40 Correct 16 ms 21192 KB Output is correct
41 Correct 15 ms 21112 KB Output is correct
42 Correct 12 ms 21152 KB Output is correct
43 Correct 13 ms 22228 KB Output is correct
44 Correct 15 ms 24104 KB Output is correct
45 Correct 18 ms 27016 KB Output is correct
46 Correct 28 ms 29084 KB Output is correct
47 Correct 15 ms 20948 KB Output is correct
48 Correct 18 ms 21460 KB Output is correct
49 Correct 18 ms 22228 KB Output is correct
50 Correct 19 ms 23464 KB Output is correct
51 Correct 15 ms 20620 KB Output is correct
52 Correct 16 ms 21332 KB Output is correct
53 Correct 18 ms 22236 KB Output is correct
54 Correct 22 ms 23680 KB Output is correct
55 Runtime error 158 ms 262144 KB Execution killed with signal 9
56 Halted 0 ms 0 KB -