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Submission #926465

# Submission time Handle Problem Language Result Execution time Memory
926465 2024-02-13T04:46:13 Z vjudge1 Joker (BOI20_joker) C++17
14 / 100
 136 ms 125784 KB 
#include <bits/stdc++.h>

using namespace std;

#define all(a) a.begin(),a.end()
#define pb push_back
#define vt vector
#define endl '\n'
typedef long long ll;

const ll mod=1e9+7;
const ll inf=mod;
const int N=5e6+4;

string ans;
int n,m,q,u[N],v[N],used[N];
vt<int>g[N];

void dfs(int v,int val=1){
	used[v]=val;
//	cout<<v<<' '<<used[v]<<endl;
	for(int to:g[v]) {	
		if(!used[to]) dfs(to,3-val);
		if(used[to]==used[v]){
			ans="YES";
		}
	}
}

void solve(){
	cin>>n>>m>>q;
	for(int i=1; i<=m; ++i){
		cin>>u[i]>>v[i];
	}
	if(max({n,m,q})<=2000){
		while(q--){
			int l,r;
			cin>>l>>r;
			for(int i=1; i<l; ++i){
				g[u[i]].pb(v[i]);
				g[v[i]].pb(u[i]);
			}
			for(int i=r+1; i<=m; ++i){
				g[u[i]].pb(v[i]);
				g[v[i]].pb(u[i]);
			}
			ans="NO";
			for(int i=1; i<=n; ++i) if(!used[i]) dfs(i);
			cout<<ans<<endl;
			for(int i=1; i<l; ++i){
				g[u[i]].clear();
				g[v[i]].clear();
			}
			for(int i=r+1; i<=m; ++i){
				g[u[i]].clear();
				g[v[i]].clear();
			}
			for(int i=1; i<=n; ++i) used[i]=0;
		}
	}
}

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int tt=1;
//	cin>>tt;
	while(tt--) {
		solve();
	}
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 123740 KB Output is correct
2 Correct 26 ms 123740 KB Output is correct
3 Correct 25 ms 123740 KB Output is correct
4 Correct 26 ms 123560 KB Output is correct
5 Correct 26 ms 123624 KB Output is correct
6 Correct 26 ms 123740 KB Output is correct
7 Correct 26 ms 123736 KB Output is correct
8 Correct 27 ms 123736 KB Output is correct
9 Correct 27 ms 123740 KB Output is correct
10 Correct 27 ms 123736 KB Output is correct
11 Correct 27 ms 123740 KB Output is correct
12 Correct 26 ms 123736 KB Output is correct
13 Correct 26 ms 123740 KB Output is correct
14 Correct 27 ms 123740 KB Output is correct
15 Correct 26 ms 123736 KB Output is correct
16 Correct 26 ms 123740 KB Output is correct
17 Correct 27 ms 123740 KB Output is correct
18 Correct 26 ms 123772 KB Output is correct
19 Correct 26 ms 123740 KB Output is correct
20 Correct 27 ms 123584 KB Output is correct
21 Correct 27 ms 123696 KB Output is correct
22 Correct 27 ms 123736 KB Output is correct
23 Correct 26 ms 123736 KB Output is correct
24 Correct 27 ms 123740 KB Output is correct
25 Correct 27 ms 123740 KB Output is correct
26 Correct 28 ms 123940 KB Output is correct
27 Correct 27 ms 123740 KB Output is correct
28 Correct 33 ms 123736 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 123740 KB Output is correct
2 Correct 26 ms 123740 KB Output is correct
3 Correct 25 ms 123740 KB Output is correct
4 Correct 26 ms 123560 KB Output is correct
5 Correct 26 ms 123624 KB Output is correct
6 Correct 26 ms 123740 KB Output is correct
7 Correct 26 ms 123736 KB Output is correct
8 Correct 27 ms 123736 KB Output is correct
9 Correct 27 ms 123740 KB Output is correct
10 Correct 27 ms 123736 KB Output is correct
11 Correct 27 ms 123740 KB Output is correct
12 Correct 26 ms 123736 KB Output is correct
13 Correct 26 ms 123740 KB Output is correct
14 Correct 27 ms 123740 KB Output is correct
15 Correct 26 ms 123736 KB Output is correct
16 Correct 26 ms 123740 KB Output is correct
17 Correct 27 ms 123740 KB Output is correct
18 Correct 26 ms 123772 KB Output is correct
19 Correct 26 ms 123740 KB Output is correct
20 Correct 27 ms 123584 KB Output is correct
21 Correct 27 ms 123696 KB Output is correct
22 Correct 27 ms 123736 KB Output is correct
23 Correct 26 ms 123736 KB Output is correct
24 Correct 27 ms 123740 KB Output is correct
25 Correct 27 ms 123740 KB Output is correct
26 Correct 28 ms 123940 KB Output is correct
27 Correct 27 ms 123740 KB Output is correct
28 Correct 33 ms 123736 KB Output is correct
29 Correct 72 ms 123800 KB Output is correct
30 Correct 117 ms 123828 KB Output is correct
31 Correct 116 ms 123740 KB Output is correct
32 Correct 101 ms 123728 KB Output is correct
33 Correct 92 ms 123736 KB Output is correct
34 Correct 121 ms 123732 KB Output is correct
35 Correct 126 ms 123736 KB Output is correct
36 Correct 70 ms 123740 KB Output is correct
37 Correct 98 ms 123736 KB Output is correct
38 Correct 93 ms 123996 KB Output is correct
39 Correct 93 ms 123828 KB Output is correct
40 Correct 95 ms 123740 KB Output is correct
41 Correct 96 ms 123740 KB Output is correct
42 Correct 94 ms 123832 KB Output is correct
43 Correct 117 ms 123988 KB Output is correct
44 Correct 127 ms 123740 KB Output is correct
45 Correct 134 ms 123824 KB Output is correct
46 Correct 136 ms 123832 KB Output is correct
47 Correct 98 ms 123740 KB Output is correct
48 Correct 99 ms 123740 KB Output is correct
49 Correct 108 ms 123816 KB Output is correct
50 Correct 120 ms 123736 KB Output is correct
51 Correct 96 ms 123984 KB Output is correct
52 Correct 101 ms 124012 KB Output is correct
53 Correct 111 ms 123836 KB Output is correct
54 Correct 124 ms 123836 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 123740 KB Output is correct
2 Correct 26 ms 123740 KB Output is correct
3 Incorrect 47 ms 125780 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 123740 KB Output is correct
2 Correct 26 ms 123740 KB Output is correct
3 Correct 25 ms 123740 KB Output is correct
4 Correct 26 ms 123560 KB Output is correct
5 Correct 26 ms 123624 KB Output is correct
6 Correct 26 ms 123740 KB Output is correct
7 Correct 26 ms 123736 KB Output is correct
8 Correct 27 ms 123736 KB Output is correct
9 Correct 27 ms 123740 KB Output is correct
10 Correct 27 ms 123736 KB Output is correct
11 Correct 27 ms 123740 KB Output is correct
12 Correct 26 ms 123736 KB Output is correct
13 Correct 26 ms 123740 KB Output is correct
14 Correct 27 ms 123740 KB Output is correct
15 Correct 26 ms 123736 KB Output is correct
16 Correct 26 ms 123740 KB Output is correct
17 Correct 27 ms 123740 KB Output is correct
18 Correct 26 ms 123772 KB Output is correct
19 Correct 26 ms 123740 KB Output is correct
20 Correct 27 ms 123584 KB Output is correct
21 Correct 27 ms 123696 KB Output is correct
22 Correct 27 ms 123736 KB Output is correct
23 Correct 26 ms 123736 KB Output is correct
24 Correct 27 ms 123740 KB Output is correct
25 Correct 27 ms 123740 KB Output is correct
26 Correct 28 ms 123940 KB Output is correct
27 Correct 27 ms 123740 KB Output is correct
28 Correct 33 ms 123736 KB Output is correct
29 Incorrect 47 ms 125780 KB Output isn't correct
30 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 123740 KB Output is correct
2 Correct 26 ms 123740 KB Output is correct
3 Correct 25 ms 123740 KB Output is correct
4 Correct 26 ms 123560 KB Output is correct
5 Correct 26 ms 123624 KB Output is correct
6 Correct 26 ms 123740 KB Output is correct
7 Correct 26 ms 123736 KB Output is correct
8 Correct 27 ms 123736 KB Output is correct
9 Correct 27 ms 123740 KB Output is correct
10 Correct 27 ms 123736 KB Output is correct
11 Correct 27 ms 123740 KB Output is correct
12 Correct 26 ms 123736 KB Output is correct
13 Correct 26 ms 123740 KB Output is correct
14 Correct 27 ms 123740 KB Output is correct
15 Correct 26 ms 123736 KB Output is correct
16 Correct 26 ms 123740 KB Output is correct
17 Correct 27 ms 123740 KB Output is correct
18 Correct 26 ms 123772 KB Output is correct
19 Correct 26 ms 123740 KB Output is correct
20 Correct 27 ms 123584 KB Output is correct
21 Correct 27 ms 123696 KB Output is correct
22 Correct 27 ms 123736 KB Output is correct
23 Correct 26 ms 123736 KB Output is correct
24 Correct 27 ms 123740 KB Output is correct
25 Correct 27 ms 123740 KB Output is correct
26 Correct 28 ms 123940 KB Output is correct
27 Correct 27 ms 123740 KB Output is correct
28 Correct 33 ms 123736 KB Output is correct
29 Correct 72 ms 123800 KB Output is correct
30 Correct 117 ms 123828 KB Output is correct
31 Correct 116 ms 123740 KB Output is correct
32 Correct 101 ms 123728 KB Output is correct
33 Correct 92 ms 123736 KB Output is correct
34 Correct 121 ms 123732 KB Output is correct
35 Correct 126 ms 123736 KB Output is correct
36 Correct 70 ms 123740 KB Output is correct
37 Correct 98 ms 123736 KB Output is correct
38 Correct 93 ms 123996 KB Output is correct
39 Correct 93 ms 123828 KB Output is correct
40 Correct 95 ms 123740 KB Output is correct
41 Correct 96 ms 123740 KB Output is correct
42 Correct 94 ms 123832 KB Output is correct
43 Correct 117 ms 123988 KB Output is correct
44 Correct 127 ms 123740 KB Output is correct
45 Correct 134 ms 123824 KB Output is correct
46 Correct 136 ms 123832 KB Output is correct
47 Correct 98 ms 123740 KB Output is correct
48 Correct 99 ms 123740 KB Output is correct
49 Correct 108 ms 123816 KB Output is correct
50 Correct 120 ms 123736 KB Output is correct
51 Correct 96 ms 123984 KB Output is correct
52 Correct 101 ms 124012 KB Output is correct
53 Correct 111 ms 123836 KB Output is correct
54 Correct 124 ms 123836 KB Output is correct
55 Incorrect 47 ms 125784 KB Output isn't correct
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 123740 KB Output is correct
2 Correct 26 ms 123740 KB Output is correct
3 Correct 25 ms 123740 KB Output is correct
4 Correct 26 ms 123560 KB Output is correct
5 Correct 26 ms 123624 KB Output is correct
6 Correct 26 ms 123740 KB Output is correct
7 Correct 26 ms 123736 KB Output is correct
8 Correct 27 ms 123736 KB Output is correct
9 Correct 27 ms 123740 KB Output is correct
10 Correct 27 ms 123736 KB Output is correct
11 Correct 27 ms 123740 KB Output is correct
12 Correct 26 ms 123736 KB Output is correct
13 Correct 26 ms 123740 KB Output is correct
14 Correct 27 ms 123740 KB Output is correct
15 Correct 26 ms 123736 KB Output is correct
16 Correct 26 ms 123740 KB Output is correct
17 Correct 27 ms 123740 KB Output is correct
18 Correct 26 ms 123772 KB Output is correct
19 Correct 26 ms 123740 KB Output is correct
20 Correct 27 ms 123584 KB Output is correct
21 Correct 27 ms 123696 KB Output is correct
22 Correct 27 ms 123736 KB Output is correct
23 Correct 26 ms 123736 KB Output is correct
24 Correct 27 ms 123740 KB Output is correct
25 Correct 27 ms 123740 KB Output is correct
26 Correct 28 ms 123940 KB Output is correct
27 Correct 27 ms 123740 KB Output is correct
28 Correct 33 ms 123736 KB Output is correct
29 Correct 72 ms 123800 KB Output is correct
30 Correct 117 ms 123828 KB Output is correct
31 Correct 116 ms 123740 KB Output is correct
32 Correct 101 ms 123728 KB Output is correct
33 Correct 92 ms 123736 KB Output is correct
34 Correct 121 ms 123732 KB Output is correct
35 Correct 126 ms 123736 KB Output is correct
36 Correct 70 ms 123740 KB Output is correct
37 Correct 98 ms 123736 KB Output is correct
38 Correct 93 ms 123996 KB Output is correct
39 Correct 93 ms 123828 KB Output is correct
40 Correct 95 ms 123740 KB Output is correct
41 Correct 96 ms 123740 KB Output is correct
42 Correct 94 ms 123832 KB Output is correct
43 Correct 117 ms 123988 KB Output is correct
44 Correct 127 ms 123740 KB Output is correct
45 Correct 134 ms 123824 KB Output is correct
46 Correct 136 ms 123832 KB Output is correct
47 Correct 98 ms 123740 KB Output is correct
48 Correct 99 ms 123740 KB Output is correct
49 Correct 108 ms 123816 KB Output is correct
50 Correct 120 ms 123736 KB Output is correct
51 Correct 96 ms 123984 KB Output is correct
52 Correct 101 ms 124012 KB Output is correct
53 Correct 111 ms 123836 KB Output is correct
54 Correct 124 ms 123836 KB Output is correct
55 Incorrect 47 ms 125780 KB Output isn't correct
56 Halted 0 ms 0 KB -