oj.uz

Submission #280345

# Submission time Handle Problem Language Result Execution time Memory
280345 2020-08-22T16:33:59 Z spdskatr Joker (BOI20_joker) C++14
14 / 100
 83 ms 632 KB 
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <vector>
#include <cstring>
#define fi first
#define se second

using namespace std;
typedef pair<int, int> pii;

int N, M, Q, seen[2005], col[2005];
vector<pii> graph[2005];

int dfs(int x, int l, int r) {
	seen[x] = 1;
	for (pii p : graph[x]) {
		int v = p.fi, e = p.se;
		if (e < l || e > r) {
			if (seen[v]) {
				if (col[v] == col[x]) return 1;
			} else {
				col[v] = !col[x];
				if (dfs(v, l, r)) return 1;
			}
		}
	}
	return 0;
}

int main() {
	scanf("%d %d %d", &N, &M, &Q);
	for (int i = 1; i <= M; i++) {
		int a, b;
		scanf("%d %d", &a, &b);
		graph[a].push_back({ b, i });
		graph[b].push_back({ a, i });
	}
	for (int q = 0; q < Q; q++) {
		int l, r;
		scanf("%d %d", &l, &r);
		memset(seen, 0, sizeof(seen));
		memset(col, 0, sizeof(col));
		int nice = 0;
		for (int i = 1; i <= N; i++) {
			if (!seen[i]) if (dfs(i, l, r)) {
				nice = 1;	
				break;
			}
		}
		if (nice) printf("YES\n");
		else printf("NO\n");
	}
}

Compilation message

Joker.cpp: In function 'int main()':
Joker.cpp:32:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   32 |  scanf("%d %d %d", &N, &M, &Q);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Joker.cpp:35:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   35 |   scanf("%d %d", &a, &b);
      |   ~~~~~^~~~~~~~~~~~~~~~~
Joker.cpp:41:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   41 |   scanf("%d %d", &l, &r);
      |   ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 83 ms 504 KB Output is correct
30 Correct 57 ms 512 KB Output is correct
31 Correct 42 ms 512 KB Output is correct
32 Correct 21 ms 512 KB Output is correct
33 Correct 10 ms 512 KB Output is correct
34 Correct 41 ms 512 KB Output is correct
35 Correct 60 ms 512 KB Output is correct
36 Correct 18 ms 512 KB Output is correct
37 Correct 65 ms 512 KB Output is correct
38 Correct 79 ms 512 KB Output is correct
39 Correct 52 ms 512 KB Output is correct
40 Correct 25 ms 512 KB Output is correct
41 Correct 25 ms 512 KB Output is correct
42 Correct 27 ms 512 KB Output is correct
43 Correct 9 ms 512 KB Output is correct
44 Correct 7 ms 512 KB Output is correct
45 Correct 10 ms 544 KB Output is correct
46 Correct 14 ms 512 KB Output is correct
47 Correct 27 ms 512 KB Output is correct
48 Correct 30 ms 512 KB Output is correct
49 Correct 38 ms 528 KB Output is correct
50 Correct 48 ms 524 KB Output is correct
51 Correct 28 ms 512 KB Output is correct
52 Correct 36 ms 512 KB Output is correct
53 Correct 42 ms 632 KB Output is correct
54 Correct 57 ms 512 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Runtime error 1 ms 512 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Runtime error 1 ms 512 KB Execution killed with signal 11
30 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 83 ms 504 KB Output is correct
30 Correct 57 ms 512 KB Output is correct
31 Correct 42 ms 512 KB Output is correct
32 Correct 21 ms 512 KB Output is correct
33 Correct 10 ms 512 KB Output is correct
34 Correct 41 ms 512 KB Output is correct
35 Correct 60 ms 512 KB Output is correct
36 Correct 18 ms 512 KB Output is correct
37 Correct 65 ms 512 KB Output is correct
38 Correct 79 ms 512 KB Output is correct
39 Correct 52 ms 512 KB Output is correct
40 Correct 25 ms 512 KB Output is correct
41 Correct 25 ms 512 KB Output is correct
42 Correct 27 ms 512 KB Output is correct
43 Correct 9 ms 512 KB Output is correct
44 Correct 7 ms 512 KB Output is correct
45 Correct 10 ms 544 KB Output is correct
46 Correct 14 ms 512 KB Output is correct
47 Correct 27 ms 512 KB Output is correct
48 Correct 30 ms 512 KB Output is correct
49 Correct 38 ms 528 KB Output is correct
50 Correct 48 ms 524 KB Output is correct
51 Correct 28 ms 512 KB Output is correct
52 Correct 36 ms 512 KB Output is correct
53 Correct 42 ms 632 KB Output is correct
54 Correct 57 ms 512 KB Output is correct
55 Runtime error 2 ms 512 KB Execution killed with signal 11
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 83 ms 504 KB Output is correct
30 Correct 57 ms 512 KB Output is correct
31 Correct 42 ms 512 KB Output is correct
32 Correct 21 ms 512 KB Output is correct
33 Correct 10 ms 512 KB Output is correct
34 Correct 41 ms 512 KB Output is correct
35 Correct 60 ms 512 KB Output is correct
36 Correct 18 ms 512 KB Output is correct
37 Correct 65 ms 512 KB Output is correct
38 Correct 79 ms 512 KB Output is correct
39 Correct 52 ms 512 KB Output is correct
40 Correct 25 ms 512 KB Output is correct
41 Correct 25 ms 512 KB Output is correct
42 Correct 27 ms 512 KB Output is correct
43 Correct 9 ms 512 KB Output is correct
44 Correct 7 ms 512 KB Output is correct
45 Correct 10 ms 544 KB Output is correct
46 Correct 14 ms 512 KB Output is correct
47 Correct 27 ms 512 KB Output is correct
48 Correct 30 ms 512 KB Output is correct
49 Correct 38 ms 528 KB Output is correct
50 Correct 48 ms 524 KB Output is correct
51 Correct 28 ms 512 KB Output is correct
52 Correct 36 ms 512 KB Output is correct
53 Correct 42 ms 632 KB Output is correct
54 Correct 57 ms 512 KB Output is correct
55 Runtime error 1 ms 512 KB Execution killed with signal 11
56 Halted 0 ms 0 KB -