#include <bits/stdc++.h>
using namespace std;
#define INF 0x3f3f3f3f
#define rep(i, m, n) for (int i = m; i <= n; i++)
#define per(i, m, n) for (int i = m; i >= n; i--)
#define sz(v) (int) v.size()
#define all(v) v.begin(), v.end()
#define ll long long
#define pb push_back
#define mp make_pair
#define fi first
#define se second
const int maxn = 2e5 + 5;
int N, M, Q, ok = 0;
int vis[maxn];
vector<pair<int, int> > G[maxn];
void dfs(int u, int par, int col, int l, int r) {
vis[u] = col;
for (auto node : G[u]) {
if (node.fi == par || (l <= node.se && node.se <= r)) continue;
if (vis[node.fi] == vis[u]) ok = 1;
if (!vis[node.fi])
dfs(node.fi, u, 3 - col, l, r);
}
}
int main() {
ios::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
cin >> N >> M >> Q;
rep(i, 1, M) {
int u, v;
cin >> u >> v;
G[u].push_back(mp(v, i));
G[v].push_back(mp(u, i));
}
while (Q--) {
int l, r;
cin >> l >> r;
ok = 0;
rep(i, 1, N) vis[i] = 0;
rep(i, 1, N) if (!vis[i])
dfs(i, 0, 1, l, r);
cout << (ok ? "YES\n" : "NO\n");
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
3 |
Correct |
4 ms |
5020 KB |
Output is correct |
4 |
Correct |
4 ms |
4940 KB |
Output is correct |
5 |
Correct |
4 ms |
5016 KB |
Output is correct |
6 |
Correct |
3 ms |
5016 KB |
Output is correct |
7 |
Correct |
4 ms |
4940 KB |
Output is correct |
8 |
Correct |
4 ms |
4940 KB |
Output is correct |
9 |
Correct |
4 ms |
4980 KB |
Output is correct |
10 |
Correct |
4 ms |
4940 KB |
Output is correct |
11 |
Correct |
4 ms |
4940 KB |
Output is correct |
12 |
Correct |
4 ms |
4940 KB |
Output is correct |
13 |
Correct |
4 ms |
4940 KB |
Output is correct |
14 |
Correct |
4 ms |
4940 KB |
Output is correct |
15 |
Correct |
4 ms |
4940 KB |
Output is correct |
16 |
Correct |
4 ms |
5016 KB |
Output is correct |
17 |
Correct |
4 ms |
4940 KB |
Output is correct |
18 |
Correct |
4 ms |
5016 KB |
Output is correct |
19 |
Correct |
4 ms |
4940 KB |
Output is correct |
20 |
Correct |
4 ms |
5024 KB |
Output is correct |
21 |
Correct |
6 ms |
4940 KB |
Output is correct |
22 |
Correct |
5 ms |
5020 KB |
Output is correct |
23 |
Correct |
4 ms |
4940 KB |
Output is correct |
24 |
Correct |
5 ms |
4940 KB |
Output is correct |
25 |
Correct |
4 ms |
4940 KB |
Output is correct |
26 |
Correct |
4 ms |
4940 KB |
Output is correct |
27 |
Correct |
4 ms |
4940 KB |
Output is correct |
28 |
Correct |
5 ms |
4940 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
3 |
Correct |
4 ms |
5020 KB |
Output is correct |
4 |
Correct |
4 ms |
4940 KB |
Output is correct |
5 |
Correct |
4 ms |
5016 KB |
Output is correct |
6 |
Correct |
3 ms |
5016 KB |
Output is correct |
7 |
Correct |
4 ms |
4940 KB |
Output is correct |
8 |
Correct |
4 ms |
4940 KB |
Output is correct |
9 |
Correct |
4 ms |
4980 KB |
Output is correct |
10 |
Correct |
4 ms |
4940 KB |
Output is correct |
11 |
Correct |
4 ms |
4940 KB |
Output is correct |
12 |
Correct |
4 ms |
4940 KB |
Output is correct |
13 |
Correct |
4 ms |
4940 KB |
Output is correct |
14 |
Correct |
4 ms |
4940 KB |
Output is correct |
15 |
Correct |
4 ms |
4940 KB |
Output is correct |
16 |
Correct |
4 ms |
5016 KB |
Output is correct |
17 |
Correct |
4 ms |
4940 KB |
Output is correct |
18 |
Correct |
4 ms |
5016 KB |
Output is correct |
19 |
Correct |
4 ms |
4940 KB |
Output is correct |
20 |
Correct |
4 ms |
5024 KB |
Output is correct |
21 |
Correct |
6 ms |
4940 KB |
Output is correct |
22 |
Correct |
5 ms |
5020 KB |
Output is correct |
23 |
Correct |
4 ms |
4940 KB |
Output is correct |
24 |
Correct |
5 ms |
4940 KB |
Output is correct |
25 |
Correct |
4 ms |
4940 KB |
Output is correct |
26 |
Correct |
4 ms |
4940 KB |
Output is correct |
27 |
Correct |
4 ms |
4940 KB |
Output is correct |
28 |
Correct |
5 ms |
4940 KB |
Output is correct |
29 |
Correct |
75 ms |
5068 KB |
Output is correct |
30 |
Correct |
126 ms |
5140 KB |
Output is correct |
31 |
Correct |
122 ms |
5168 KB |
Output is correct |
32 |
Correct |
100 ms |
5068 KB |
Output is correct |
33 |
Correct |
84 ms |
5152 KB |
Output is correct |
34 |
Correct |
147 ms |
5072 KB |
Output is correct |
35 |
Correct |
139 ms |
5068 KB |
Output is correct |
36 |
Correct |
37 ms |
5200 KB |
Output is correct |
37 |
Correct |
81 ms |
5176 KB |
Output is correct |
38 |
Correct |
82 ms |
5156 KB |
Output is correct |
39 |
Correct |
92 ms |
5068 KB |
Output is correct |
40 |
Correct |
92 ms |
5164 KB |
Output is correct |
41 |
Correct |
91 ms |
5272 KB |
Output is correct |
42 |
Correct |
93 ms |
5188 KB |
Output is correct |
43 |
Correct |
118 ms |
5068 KB |
Output is correct |
44 |
Correct |
120 ms |
5156 KB |
Output is correct |
45 |
Correct |
132 ms |
5068 KB |
Output is correct |
46 |
Correct |
136 ms |
5100 KB |
Output is correct |
47 |
Correct |
90 ms |
5028 KB |
Output is correct |
48 |
Correct |
98 ms |
5068 KB |
Output is correct |
49 |
Correct |
110 ms |
5156 KB |
Output is correct |
50 |
Correct |
124 ms |
5032 KB |
Output is correct |
51 |
Correct |
89 ms |
5068 KB |
Output is correct |
52 |
Correct |
103 ms |
5160 KB |
Output is correct |
53 |
Correct |
115 ms |
5068 KB |
Output is correct |
54 |
Correct |
137 ms |
5068 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
3 |
Execution timed out |
2063 ms |
18028 KB |
Time limit exceeded |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
3 |
Correct |
4 ms |
5020 KB |
Output is correct |
4 |
Correct |
4 ms |
4940 KB |
Output is correct |
5 |
Correct |
4 ms |
5016 KB |
Output is correct |
6 |
Correct |
3 ms |
5016 KB |
Output is correct |
7 |
Correct |
4 ms |
4940 KB |
Output is correct |
8 |
Correct |
4 ms |
4940 KB |
Output is correct |
9 |
Correct |
4 ms |
4980 KB |
Output is correct |
10 |
Correct |
4 ms |
4940 KB |
Output is correct |
11 |
Correct |
4 ms |
4940 KB |
Output is correct |
12 |
Correct |
4 ms |
4940 KB |
Output is correct |
13 |
Correct |
4 ms |
4940 KB |
Output is correct |
14 |
Correct |
4 ms |
4940 KB |
Output is correct |
15 |
Correct |
4 ms |
4940 KB |
Output is correct |
16 |
Correct |
4 ms |
5016 KB |
Output is correct |
17 |
Correct |
4 ms |
4940 KB |
Output is correct |
18 |
Correct |
4 ms |
5016 KB |
Output is correct |
19 |
Correct |
4 ms |
4940 KB |
Output is correct |
20 |
Correct |
4 ms |
5024 KB |
Output is correct |
21 |
Correct |
6 ms |
4940 KB |
Output is correct |
22 |
Correct |
5 ms |
5020 KB |
Output is correct |
23 |
Correct |
4 ms |
4940 KB |
Output is correct |
24 |
Correct |
5 ms |
4940 KB |
Output is correct |
25 |
Correct |
4 ms |
4940 KB |
Output is correct |
26 |
Correct |
4 ms |
4940 KB |
Output is correct |
27 |
Correct |
4 ms |
4940 KB |
Output is correct |
28 |
Correct |
5 ms |
4940 KB |
Output is correct |
29 |
Execution timed out |
2063 ms |
18028 KB |
Time limit exceeded |
30 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
3 |
Correct |
4 ms |
5020 KB |
Output is correct |
4 |
Correct |
4 ms |
4940 KB |
Output is correct |
5 |
Correct |
4 ms |
5016 KB |
Output is correct |
6 |
Correct |
3 ms |
5016 KB |
Output is correct |
7 |
Correct |
4 ms |
4940 KB |
Output is correct |
8 |
Correct |
4 ms |
4940 KB |
Output is correct |
9 |
Correct |
4 ms |
4980 KB |
Output is correct |
10 |
Correct |
4 ms |
4940 KB |
Output is correct |
11 |
Correct |
4 ms |
4940 KB |
Output is correct |
12 |
Correct |
4 ms |
4940 KB |
Output is correct |
13 |
Correct |
4 ms |
4940 KB |
Output is correct |
14 |
Correct |
4 ms |
4940 KB |
Output is correct |
15 |
Correct |
4 ms |
4940 KB |
Output is correct |
16 |
Correct |
4 ms |
5016 KB |
Output is correct |
17 |
Correct |
4 ms |
4940 KB |
Output is correct |
18 |
Correct |
4 ms |
5016 KB |
Output is correct |
19 |
Correct |
4 ms |
4940 KB |
Output is correct |
20 |
Correct |
4 ms |
5024 KB |
Output is correct |
21 |
Correct |
6 ms |
4940 KB |
Output is correct |
22 |
Correct |
5 ms |
5020 KB |
Output is correct |
23 |
Correct |
4 ms |
4940 KB |
Output is correct |
24 |
Correct |
5 ms |
4940 KB |
Output is correct |
25 |
Correct |
4 ms |
4940 KB |
Output is correct |
26 |
Correct |
4 ms |
4940 KB |
Output is correct |
27 |
Correct |
4 ms |
4940 KB |
Output is correct |
28 |
Correct |
5 ms |
4940 KB |
Output is correct |
29 |
Correct |
75 ms |
5068 KB |
Output is correct |
30 |
Correct |
126 ms |
5140 KB |
Output is correct |
31 |
Correct |
122 ms |
5168 KB |
Output is correct |
32 |
Correct |
100 ms |
5068 KB |
Output is correct |
33 |
Correct |
84 ms |
5152 KB |
Output is correct |
34 |
Correct |
147 ms |
5072 KB |
Output is correct |
35 |
Correct |
139 ms |
5068 KB |
Output is correct |
36 |
Correct |
37 ms |
5200 KB |
Output is correct |
37 |
Correct |
81 ms |
5176 KB |
Output is correct |
38 |
Correct |
82 ms |
5156 KB |
Output is correct |
39 |
Correct |
92 ms |
5068 KB |
Output is correct |
40 |
Correct |
92 ms |
5164 KB |
Output is correct |
41 |
Correct |
91 ms |
5272 KB |
Output is correct |
42 |
Correct |
93 ms |
5188 KB |
Output is correct |
43 |
Correct |
118 ms |
5068 KB |
Output is correct |
44 |
Correct |
120 ms |
5156 KB |
Output is correct |
45 |
Correct |
132 ms |
5068 KB |
Output is correct |
46 |
Correct |
136 ms |
5100 KB |
Output is correct |
47 |
Correct |
90 ms |
5028 KB |
Output is correct |
48 |
Correct |
98 ms |
5068 KB |
Output is correct |
49 |
Correct |
110 ms |
5156 KB |
Output is correct |
50 |
Correct |
124 ms |
5032 KB |
Output is correct |
51 |
Correct |
89 ms |
5068 KB |
Output is correct |
52 |
Correct |
103 ms |
5160 KB |
Output is correct |
53 |
Correct |
115 ms |
5068 KB |
Output is correct |
54 |
Correct |
137 ms |
5068 KB |
Output is correct |
55 |
Execution timed out |
2073 ms |
19652 KB |
Time limit exceeded |
56 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
3 |
Correct |
4 ms |
5020 KB |
Output is correct |
4 |
Correct |
4 ms |
4940 KB |
Output is correct |
5 |
Correct |
4 ms |
5016 KB |
Output is correct |
6 |
Correct |
3 ms |
5016 KB |
Output is correct |
7 |
Correct |
4 ms |
4940 KB |
Output is correct |
8 |
Correct |
4 ms |
4940 KB |
Output is correct |
9 |
Correct |
4 ms |
4980 KB |
Output is correct |
10 |
Correct |
4 ms |
4940 KB |
Output is correct |
11 |
Correct |
4 ms |
4940 KB |
Output is correct |
12 |
Correct |
4 ms |
4940 KB |
Output is correct |
13 |
Correct |
4 ms |
4940 KB |
Output is correct |
14 |
Correct |
4 ms |
4940 KB |
Output is correct |
15 |
Correct |
4 ms |
4940 KB |
Output is correct |
16 |
Correct |
4 ms |
5016 KB |
Output is correct |
17 |
Correct |
4 ms |
4940 KB |
Output is correct |
18 |
Correct |
4 ms |
5016 KB |
Output is correct |
19 |
Correct |
4 ms |
4940 KB |
Output is correct |
20 |
Correct |
4 ms |
5024 KB |
Output is correct |
21 |
Correct |
6 ms |
4940 KB |
Output is correct |
22 |
Correct |
5 ms |
5020 KB |
Output is correct |
23 |
Correct |
4 ms |
4940 KB |
Output is correct |
24 |
Correct |
5 ms |
4940 KB |
Output is correct |
25 |
Correct |
4 ms |
4940 KB |
Output is correct |
26 |
Correct |
4 ms |
4940 KB |
Output is correct |
27 |
Correct |
4 ms |
4940 KB |
Output is correct |
28 |
Correct |
5 ms |
4940 KB |
Output is correct |
29 |
Correct |
75 ms |
5068 KB |
Output is correct |
30 |
Correct |
126 ms |
5140 KB |
Output is correct |
31 |
Correct |
122 ms |
5168 KB |
Output is correct |
32 |
Correct |
100 ms |
5068 KB |
Output is correct |
33 |
Correct |
84 ms |
5152 KB |
Output is correct |
34 |
Correct |
147 ms |
5072 KB |
Output is correct |
35 |
Correct |
139 ms |
5068 KB |
Output is correct |
36 |
Correct |
37 ms |
5200 KB |
Output is correct |
37 |
Correct |
81 ms |
5176 KB |
Output is correct |
38 |
Correct |
82 ms |
5156 KB |
Output is correct |
39 |
Correct |
92 ms |
5068 KB |
Output is correct |
40 |
Correct |
92 ms |
5164 KB |
Output is correct |
41 |
Correct |
91 ms |
5272 KB |
Output is correct |
42 |
Correct |
93 ms |
5188 KB |
Output is correct |
43 |
Correct |
118 ms |
5068 KB |
Output is correct |
44 |
Correct |
120 ms |
5156 KB |
Output is correct |
45 |
Correct |
132 ms |
5068 KB |
Output is correct |
46 |
Correct |
136 ms |
5100 KB |
Output is correct |
47 |
Correct |
90 ms |
5028 KB |
Output is correct |
48 |
Correct |
98 ms |
5068 KB |
Output is correct |
49 |
Correct |
110 ms |
5156 KB |
Output is correct |
50 |
Correct |
124 ms |
5032 KB |
Output is correct |
51 |
Correct |
89 ms |
5068 KB |
Output is correct |
52 |
Correct |
103 ms |
5160 KB |
Output is correct |
53 |
Correct |
115 ms |
5068 KB |
Output is correct |
54 |
Correct |
137 ms |
5068 KB |
Output is correct |
55 |
Execution timed out |
2063 ms |
18028 KB |
Time limit exceeded |
56 |
Halted |
0 ms |
0 KB |
- |