oj.uz

Submission #642300

# Submission time Handle Problem Language Result Execution time Memory
642300 2022-09-19T08:14:26 Z dozer Joker (BOI20_joker) C++14
14 / 100
 163 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]) 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--)
	{
		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;
				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]]) 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 9 ms 19028 KB Output is correct
3 Correct 9 ms 19128 KB Output is correct
4 Correct 9 ms 19040 KB Output is correct
5 Correct 9 ms 19028 KB Output is correct
6 Correct 11 ms 19028 KB Output is correct
7 Correct 10 ms 19156 KB Output is correct
8 Correct 10 ms 19172 KB Output is correct
9 Correct 10 ms 19156 KB Output is correct
10 Correct 10 ms 19156 KB Output is correct
11 Correct 10 ms 19156 KB Output is correct
12 Correct 9 ms 19172 KB Output is correct
13 Correct 10 ms 19156 KB Output is correct
14 Correct 10 ms 19168 KB Output is correct
15 Correct 10 ms 19184 KB Output is correct
16 Correct 10 ms 19156 KB Output is correct
17 Correct 10 ms 19104 KB Output is correct
18 Correct 10 ms 19156 KB Output is correct
19 Correct 9 ms 19084 KB Output is correct
20 Correct 9 ms 19156 KB Output is correct
21 Correct 10 ms 19152 KB Output is correct
22 Correct 10 ms 19148 KB Output is correct
23 Correct 10 ms 19056 KB Output is correct
24 Correct 10 ms 19156 KB Output is correct
25 Correct 10 ms 19156 KB Output is correct
26 Correct 12 ms 19152 KB Output is correct
27 Correct 11 ms 19156 KB Output is correct
28 Correct 11 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 9 ms 19028 KB Output is correct
3 Correct 9 ms 19128 KB Output is correct
4 Correct 9 ms 19040 KB Output is correct
5 Correct 9 ms 19028 KB Output is correct
6 Correct 11 ms 19028 KB Output is correct
7 Correct 10 ms 19156 KB Output is correct
8 Correct 10 ms 19172 KB Output is correct
9 Correct 10 ms 19156 KB Output is correct
10 Correct 10 ms 19156 KB Output is correct
11 Correct 10 ms 19156 KB Output is correct
12 Correct 9 ms 19172 KB Output is correct
13 Correct 10 ms 19156 KB Output is correct
14 Correct 10 ms 19168 KB Output is correct
15 Correct 10 ms 19184 KB Output is correct
16 Correct 10 ms 19156 KB Output is correct
17 Correct 10 ms 19104 KB Output is correct
18 Correct 10 ms 19156 KB Output is correct
19 Correct 9 ms 19084 KB Output is correct
20 Correct 9 ms 19156 KB Output is correct
21 Correct 10 ms 19152 KB Output is correct
22 Correct 10 ms 19148 KB Output is correct
23 Correct 10 ms 19056 KB Output is correct
24 Correct 10 ms 19156 KB Output is correct
25 Correct 10 ms 19156 KB Output is correct
26 Correct 12 ms 19152 KB Output is correct
27 Correct 11 ms 19156 KB Output is correct
28 Correct 11 ms 19156 KB Output is correct
29 Correct 22 ms 25928 KB Output is correct
30 Correct 18 ms 23380 KB Output is correct
31 Correct 17 ms 22792 KB Output is correct
32 Correct 14 ms 21332 KB Output is correct
33 Correct 11 ms 20308 KB Output is correct
34 Correct 16 ms 23124 KB Output is correct
35 Correct 19 ms 23792 KB Output is correct
36 Correct 16 ms 21340 KB Output is correct
37 Correct 31 ms 25744 KB Output is correct
38 Correct 51 ms 29152 KB Output is correct
39 Correct 18 ms 22664 KB Output is correct
40 Correct 15 ms 21252 KB Output is correct
41 Correct 13 ms 21200 KB Output is correct
42 Correct 12 ms 21136 KB Output is correct
43 Correct 13 ms 22204 KB Output is correct
44 Correct 15 ms 24164 KB Output is correct
45 Correct 18 ms 27092 KB Output is correct
46 Correct 25 ms 28960 KB Output is correct
47 Correct 19 ms 20948 KB Output is correct
48 Correct 18 ms 21460 KB Output is correct
49 Correct 20 ms 22228 KB Output is correct
50 Correct 24 ms 23520 KB Output is correct
51 Correct 13 ms 20568 KB Output is correct
52 Correct 15 ms 21384 KB Output is correct
53 Correct 15 ms 22228 KB Output is correct
54 Correct 21 ms 23620 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 9 ms 19028 KB Output is correct
3 Runtime error 163 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 9 ms 19028 KB Output is correct
3 Correct 9 ms 19128 KB Output is correct
4 Correct 9 ms 19040 KB Output is correct
5 Correct 9 ms 19028 KB Output is correct
6 Correct 11 ms 19028 KB Output is correct
7 Correct 10 ms 19156 KB Output is correct
8 Correct 10 ms 19172 KB Output is correct
9 Correct 10 ms 19156 KB Output is correct
10 Correct 10 ms 19156 KB Output is correct
11 Correct 10 ms 19156 KB Output is correct
12 Correct 9 ms 19172 KB Output is correct
13 Correct 10 ms 19156 KB Output is correct
14 Correct 10 ms 19168 KB Output is correct
15 Correct 10 ms 19184 KB Output is correct
16 Correct 10 ms 19156 KB Output is correct
17 Correct 10 ms 19104 KB Output is correct
18 Correct 10 ms 19156 KB Output is correct
19 Correct 9 ms 19084 KB Output is correct
20 Correct 9 ms 19156 KB Output is correct
21 Correct 10 ms 19152 KB Output is correct
22 Correct 10 ms 19148 KB Output is correct
23 Correct 10 ms 19056 KB Output is correct
24 Correct 10 ms 19156 KB Output is correct
25 Correct 10 ms 19156 KB Output is correct
26 Correct 12 ms 19152 KB Output is correct
27 Correct 11 ms 19156 KB Output is correct
28 Correct 11 ms 19156 KB Output is correct
29 Runtime error 163 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 9 ms 19028 KB Output is correct
3 Correct 9 ms 19128 KB Output is correct
4 Correct 9 ms 19040 KB Output is correct
5 Correct 9 ms 19028 KB Output is correct
6 Correct 11 ms 19028 KB Output is correct
7 Correct 10 ms 19156 KB Output is correct
8 Correct 10 ms 19172 KB Output is correct
9 Correct 10 ms 19156 KB Output is correct
10 Correct 10 ms 19156 KB Output is correct
11 Correct 10 ms 19156 KB Output is correct
12 Correct 9 ms 19172 KB Output is correct
13 Correct 10 ms 19156 KB Output is correct
14 Correct 10 ms 19168 KB Output is correct
15 Correct 10 ms 19184 KB Output is correct
16 Correct 10 ms 19156 KB Output is correct
17 Correct 10 ms 19104 KB Output is correct
18 Correct 10 ms 19156 KB Output is correct
19 Correct 9 ms 19084 KB Output is correct
20 Correct 9 ms 19156 KB Output is correct
21 Correct 10 ms 19152 KB Output is correct
22 Correct 10 ms 19148 KB Output is correct
23 Correct 10 ms 19056 KB Output is correct
24 Correct 10 ms 19156 KB Output is correct
25 Correct 10 ms 19156 KB Output is correct
26 Correct 12 ms 19152 KB Output is correct
27 Correct 11 ms 19156 KB Output is correct
28 Correct 11 ms 19156 KB Output is correct
29 Correct 22 ms 25928 KB Output is correct
30 Correct 18 ms 23380 KB Output is correct
31 Correct 17 ms 22792 KB Output is correct
32 Correct 14 ms 21332 KB Output is correct
33 Correct 11 ms 20308 KB Output is correct
34 Correct 16 ms 23124 KB Output is correct
35 Correct 19 ms 23792 KB Output is correct
36 Correct 16 ms 21340 KB Output is correct
37 Correct 31 ms 25744 KB Output is correct
38 Correct 51 ms 29152 KB Output is correct
39 Correct 18 ms 22664 KB Output is correct
40 Correct 15 ms 21252 KB Output is correct
41 Correct 13 ms 21200 KB Output is correct
42 Correct 12 ms 21136 KB Output is correct
43 Correct 13 ms 22204 KB Output is correct
44 Correct 15 ms 24164 KB Output is correct
45 Correct 18 ms 27092 KB Output is correct
46 Correct 25 ms 28960 KB Output is correct
47 Correct 19 ms 20948 KB Output is correct
48 Correct 18 ms 21460 KB Output is correct
49 Correct 20 ms 22228 KB Output is correct
50 Correct 24 ms 23520 KB Output is correct
51 Correct 13 ms 20568 KB Output is correct
52 Correct 15 ms 21384 KB Output is correct
53 Correct 15 ms 22228 KB Output is correct
54 Correct 21 ms 23620 KB Output is correct
55 Runtime error 142 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 9 ms 19028 KB Output is correct
3 Correct 9 ms 19128 KB Output is correct
4 Correct 9 ms 19040 KB Output is correct
5 Correct 9 ms 19028 KB Output is correct
6 Correct 11 ms 19028 KB Output is correct
7 Correct 10 ms 19156 KB Output is correct
8 Correct 10 ms 19172 KB Output is correct
9 Correct 10 ms 19156 KB Output is correct
10 Correct 10 ms 19156 KB Output is correct
11 Correct 10 ms 19156 KB Output is correct
12 Correct 9 ms 19172 KB Output is correct
13 Correct 10 ms 19156 KB Output is correct
14 Correct 10 ms 19168 KB Output is correct
15 Correct 10 ms 19184 KB Output is correct
16 Correct 10 ms 19156 KB Output is correct
17 Correct 10 ms 19104 KB Output is correct
18 Correct 10 ms 19156 KB Output is correct
19 Correct 9 ms 19084 KB Output is correct
20 Correct 9 ms 19156 KB Output is correct
21 Correct 10 ms 19152 KB Output is correct
22 Correct 10 ms 19148 KB Output is correct
23 Correct 10 ms 19056 KB Output is correct
24 Correct 10 ms 19156 KB Output is correct
25 Correct 10 ms 19156 KB Output is correct
26 Correct 12 ms 19152 KB Output is correct
27 Correct 11 ms 19156 KB Output is correct
28 Correct 11 ms 19156 KB Output is correct
29 Correct 22 ms 25928 KB Output is correct
30 Correct 18 ms 23380 KB Output is correct
31 Correct 17 ms 22792 KB Output is correct
32 Correct 14 ms 21332 KB Output is correct
33 Correct 11 ms 20308 KB Output is correct
34 Correct 16 ms 23124 KB Output is correct
35 Correct 19 ms 23792 KB Output is correct
36 Correct 16 ms 21340 KB Output is correct
37 Correct 31 ms 25744 KB Output is correct
38 Correct 51 ms 29152 KB Output is correct
39 Correct 18 ms 22664 KB Output is correct
40 Correct 15 ms 21252 KB Output is correct
41 Correct 13 ms 21200 KB Output is correct
42 Correct 12 ms 21136 KB Output is correct
43 Correct 13 ms 22204 KB Output is correct
44 Correct 15 ms 24164 KB Output is correct
45 Correct 18 ms 27092 KB Output is correct
46 Correct 25 ms 28960 KB Output is correct
47 Correct 19 ms 20948 KB Output is correct
48 Correct 18 ms 21460 KB Output is correct
49 Correct 20 ms 22228 KB Output is correct
50 Correct 24 ms 23520 KB Output is correct
51 Correct 13 ms 20568 KB Output is correct
52 Correct 15 ms 21384 KB Output is correct
53 Correct 15 ms 22228 KB Output is correct
54 Correct 21 ms 23620 KB Output is correct
55 Runtime error 163 ms 262144 KB Execution killed with signal 9
56 Halted 0 ms 0 KB -