oj.uz

Submission #642289

# Submission time Handle Problem Language Result Execution time Memory
642289 2022-09-19T07:57:40 Z dozer Joker (BOI20_joker) C++14
14 / 100
 169 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];
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;
	return b[node] = find(b, b[node]);
}


int32_t main()
{
	fastio();


	int n, 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 9 ms 19028 KB Output is correct
2 Correct 9 ms 19028 KB Output is correct
3 Correct 10 ms 19116 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 12 ms 19064 KB Output is correct
6 Correct 10 ms 19092 KB Output is correct
7 Correct 12 ms 19156 KB Output is correct
8 Correct 11 ms 19156 KB Output is correct
9 Correct 9 ms 19156 KB Output is correct
10 Correct 9 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 9 ms 19164 KB Output is correct
14 Correct 10 ms 19156 KB Output is correct
15 Correct 11 ms 19284 KB Output is correct
16 Correct 10 ms 19156 KB Output is correct
17 Correct 10 ms 19156 KB Output is correct
18 Correct 10 ms 19156 KB Output is correct
19 Correct 9 ms 19156 KB Output is correct
20 Correct 10 ms 19156 KB Output is correct
21 Correct 10 ms 19156 KB Output is correct
22 Correct 10 ms 19172 KB Output is correct
23 Correct 10 ms 19156 KB Output is correct
24 Correct 10 ms 19080 KB Output is correct
25 Correct 11 ms 19124 KB Output is correct
26 Correct 10 ms 19156 KB Output is correct
27 Correct 13 ms 19132 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 9 ms 19028 KB Output is correct
2 Correct 9 ms 19028 KB Output is correct
3 Correct 10 ms 19116 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 12 ms 19064 KB Output is correct
6 Correct 10 ms 19092 KB Output is correct
7 Correct 12 ms 19156 KB Output is correct
8 Correct 11 ms 19156 KB Output is correct
9 Correct 9 ms 19156 KB Output is correct
10 Correct 9 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 9 ms 19164 KB Output is correct
14 Correct 10 ms 19156 KB Output is correct
15 Correct 11 ms 19284 KB Output is correct
16 Correct 10 ms 19156 KB Output is correct
17 Correct 10 ms 19156 KB Output is correct
18 Correct 10 ms 19156 KB Output is correct
19 Correct 9 ms 19156 KB Output is correct
20 Correct 10 ms 19156 KB Output is correct
21 Correct 10 ms 19156 KB Output is correct
22 Correct 10 ms 19172 KB Output is correct
23 Correct 10 ms 19156 KB Output is correct
24 Correct 10 ms 19080 KB Output is correct
25 Correct 11 ms 19124 KB Output is correct
26 Correct 10 ms 19156 KB Output is correct
27 Correct 13 ms 19132 KB Output is correct
28 Correct 10 ms 19156 KB Output is correct
29 Correct 21 ms 25940 KB Output is correct
30 Correct 17 ms 23340 KB Output is correct
31 Correct 15 ms 22744 KB Output is correct
32 Correct 14 ms 21368 KB Output is correct
33 Correct 11 ms 20308 KB Output is correct
34 Correct 15 ms 23112 KB Output is correct
35 Correct 19 ms 23764 KB Output is correct
36 Correct 15 ms 21340 KB Output is correct
37 Correct 27 ms 25764 KB Output is correct
38 Correct 50 ms 29200 KB Output is correct
39 Correct 14 ms 22740 KB Output is correct
40 Correct 13 ms 21148 KB Output is correct
41 Correct 12 ms 21124 KB Output is correct
42 Correct 12 ms 21076 KB Output is correct
43 Correct 14 ms 22228 KB Output is correct
44 Correct 18 ms 24084 KB Output is correct
45 Correct 19 ms 27208 KB Output is correct
46 Correct 30 ms 28964 KB Output is correct
47 Correct 17 ms 20924 KB Output is correct
48 Correct 16 ms 21460 KB Output is correct
49 Correct 16 ms 22248 KB Output is correct
50 Correct 18 ms 23600 KB Output is correct
51 Correct 13 ms 20584 KB Output is correct
52 Correct 14 ms 21324 KB Output is correct
53 Correct 15 ms 22228 KB Output is correct
54 Correct 19 ms 23616 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 19028 KB Output is correct
2 Correct 9 ms 19028 KB Output is correct
3 Runtime error 169 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 9 ms 19028 KB Output is correct
2 Correct 9 ms 19028 KB Output is correct
3 Correct 10 ms 19116 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 12 ms 19064 KB Output is correct
6 Correct 10 ms 19092 KB Output is correct
7 Correct 12 ms 19156 KB Output is correct
8 Correct 11 ms 19156 KB Output is correct
9 Correct 9 ms 19156 KB Output is correct
10 Correct 9 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 9 ms 19164 KB Output is correct
14 Correct 10 ms 19156 KB Output is correct
15 Correct 11 ms 19284 KB Output is correct
16 Correct 10 ms 19156 KB Output is correct
17 Correct 10 ms 19156 KB Output is correct
18 Correct 10 ms 19156 KB Output is correct
19 Correct 9 ms 19156 KB Output is correct
20 Correct 10 ms 19156 KB Output is correct
21 Correct 10 ms 19156 KB Output is correct
22 Correct 10 ms 19172 KB Output is correct
23 Correct 10 ms 19156 KB Output is correct
24 Correct 10 ms 19080 KB Output is correct
25 Correct 11 ms 19124 KB Output is correct
26 Correct 10 ms 19156 KB Output is correct
27 Correct 13 ms 19132 KB Output is correct
28 Correct 10 ms 19156 KB Output is correct
29 Runtime error 169 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 9 ms 19028 KB Output is correct
2 Correct 9 ms 19028 KB Output is correct
3 Correct 10 ms 19116 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 12 ms 19064 KB Output is correct
6 Correct 10 ms 19092 KB Output is correct
7 Correct 12 ms 19156 KB Output is correct
8 Correct 11 ms 19156 KB Output is correct
9 Correct 9 ms 19156 KB Output is correct
10 Correct 9 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 9 ms 19164 KB Output is correct
14 Correct 10 ms 19156 KB Output is correct
15 Correct 11 ms 19284 KB Output is correct
16 Correct 10 ms 19156 KB Output is correct
17 Correct 10 ms 19156 KB Output is correct
18 Correct 10 ms 19156 KB Output is correct
19 Correct 9 ms 19156 KB Output is correct
20 Correct 10 ms 19156 KB Output is correct
21 Correct 10 ms 19156 KB Output is correct
22 Correct 10 ms 19172 KB Output is correct
23 Correct 10 ms 19156 KB Output is correct
24 Correct 10 ms 19080 KB Output is correct
25 Correct 11 ms 19124 KB Output is correct
26 Correct 10 ms 19156 KB Output is correct
27 Correct 13 ms 19132 KB Output is correct
28 Correct 10 ms 19156 KB Output is correct
29 Correct 21 ms 25940 KB Output is correct
30 Correct 17 ms 23340 KB Output is correct
31 Correct 15 ms 22744 KB Output is correct
32 Correct 14 ms 21368 KB Output is correct
33 Correct 11 ms 20308 KB Output is correct
34 Correct 15 ms 23112 KB Output is correct
35 Correct 19 ms 23764 KB Output is correct
36 Correct 15 ms 21340 KB Output is correct
37 Correct 27 ms 25764 KB Output is correct
38 Correct 50 ms 29200 KB Output is correct
39 Correct 14 ms 22740 KB Output is correct
40 Correct 13 ms 21148 KB Output is correct
41 Correct 12 ms 21124 KB Output is correct
42 Correct 12 ms 21076 KB Output is correct
43 Correct 14 ms 22228 KB Output is correct
44 Correct 18 ms 24084 KB Output is correct
45 Correct 19 ms 27208 KB Output is correct
46 Correct 30 ms 28964 KB Output is correct
47 Correct 17 ms 20924 KB Output is correct
48 Correct 16 ms 21460 KB Output is correct
49 Correct 16 ms 22248 KB Output is correct
50 Correct 18 ms 23600 KB Output is correct
51 Correct 13 ms 20584 KB Output is correct
52 Correct 14 ms 21324 KB Output is correct
53 Correct 15 ms 22228 KB Output is correct
54 Correct 19 ms 23616 KB Output is correct
55 Runtime error 135 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 9 ms 19028 KB Output is correct
2 Correct 9 ms 19028 KB Output is correct
3 Correct 10 ms 19116 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 12 ms 19064 KB Output is correct
6 Correct 10 ms 19092 KB Output is correct
7 Correct 12 ms 19156 KB Output is correct
8 Correct 11 ms 19156 KB Output is correct
9 Correct 9 ms 19156 KB Output is correct
10 Correct 9 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 9 ms 19164 KB Output is correct
14 Correct 10 ms 19156 KB Output is correct
15 Correct 11 ms 19284 KB Output is correct
16 Correct 10 ms 19156 KB Output is correct
17 Correct 10 ms 19156 KB Output is correct
18 Correct 10 ms 19156 KB Output is correct
19 Correct 9 ms 19156 KB Output is correct
20 Correct 10 ms 19156 KB Output is correct
21 Correct 10 ms 19156 KB Output is correct
22 Correct 10 ms 19172 KB Output is correct
23 Correct 10 ms 19156 KB Output is correct
24 Correct 10 ms 19080 KB Output is correct
25 Correct 11 ms 19124 KB Output is correct
26 Correct 10 ms 19156 KB Output is correct
27 Correct 13 ms 19132 KB Output is correct
28 Correct 10 ms 19156 KB Output is correct
29 Correct 21 ms 25940 KB Output is correct
30 Correct 17 ms 23340 KB Output is correct
31 Correct 15 ms 22744 KB Output is correct
32 Correct 14 ms 21368 KB Output is correct
33 Correct 11 ms 20308 KB Output is correct
34 Correct 15 ms 23112 KB Output is correct
35 Correct 19 ms 23764 KB Output is correct
36 Correct 15 ms 21340 KB Output is correct
37 Correct 27 ms 25764 KB Output is correct
38 Correct 50 ms 29200 KB Output is correct
39 Correct 14 ms 22740 KB Output is correct
40 Correct 13 ms 21148 KB Output is correct
41 Correct 12 ms 21124 KB Output is correct
42 Correct 12 ms 21076 KB Output is correct
43 Correct 14 ms 22228 KB Output is correct
44 Correct 18 ms 24084 KB Output is correct
45 Correct 19 ms 27208 KB Output is correct
46 Correct 30 ms 28964 KB Output is correct
47 Correct 17 ms 20924 KB Output is correct
48 Correct 16 ms 21460 KB Output is correct
49 Correct 16 ms 22248 KB Output is correct
50 Correct 18 ms 23600 KB Output is correct
51 Correct 13 ms 20584 KB Output is correct
52 Correct 14 ms 21324 KB Output is correct
53 Correct 15 ms 22228 KB Output is correct
54 Correct 19 ms 23616 KB Output is correct
55 Runtime error 169 ms 262144 KB Execution killed with signal 9
56 Halted 0 ms 0 KB -