oj.uz

Submission #636581

# Submission time Handle Problem Language Result Execution time Memory
636581 2022-08-29T15:37:32 Z rainboy Jail (JOI22_jail) C
54 / 100
 5000 ms 17616 KB 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define N	120000
#define M	100

int *ej[N], eo[N];

void append(int i, int j) {
	int o = eo[i]++;

	if (o >= 2 && (o & o - 1) == 0)
		ej[i] = (int *) realloc(ej[i], o * 2 * sizeof *ej[i]);
	ej[i][o] = j;
}

int dd[N], pp[N];

void dfs1(int p, int i, int d) {
	int o;

	dd[i] = d, pp[i] = p;
	for (o = eo[i]; o--; ) {
		int j = ej[i][o];

		if (j != p)
			dfs1(i, j, d + 1);
	}
}

char aa[M][M]; int in[M];

void dfs2(int m, int h) {
	int h_;

	if (in[h])
		return;
	in[h] = -1;
	for (h_ = 0; h_ < m; h_++)
		if (aa[h][h_])
			in[h_]--, dfs2(m, h_);
}

int main() {
	int t;

	scanf("%d", &t);
	while (t--) {
		static int ii[M], jj[N];
		static char visited[N];
		int n, m, h, h_, h1, h2, i, j, line, yes;

		scanf("%d", &n);
		for (i = 0; i < n; i++)
			ej[i] = (int *) malloc(2 * sizeof *ej[i]), eo[i] = 0;
		line = 1;
		for (h = 0; h < n - 1; h++) {
			scanf("%d%d", &i, &j), i--, j--;
			if (i + 1 != j)
				line = 0;
			append(i, j), append(j, i);
		}
		dfs1(-1, 0, 0);
		if (line) {
			scanf("%d", &m);
			memset(jj, -1, n * sizeof *jj);
			while (m--) {
				scanf("%d%d", &i, &j), i--, j--;
				jj[i] = j;
			}
			yes = 1;
			for (i = 0, j = -1; i < n; i++)
				if (jj[i] != -1) {
					if (j >= jj[i]) {
						yes = 0;
						break;
					}
					j = jj[i];
				}
			printf(yes ? "Yes\n" : "No\n");
		} else {
			scanf("%d", &m);
			for (h = 0; h < m; h++)
				scanf("%d%d", &ii[h], &jj[h]), ii[h]--, jj[h]--;
			for (h = 0; h < m; h++)
				memset(aa[h], 0, m * sizeof *aa[h]);
			for (h = 0; h < m; h++) {
				i = ii[h], j = jj[h];
				memset(visited, 0, n * sizeof *visited);
				while (i != j)
					if (dd[i] > dd[j])
						visited[i] = 1, i = pp[i];
					else
						visited[j] = 1, j = pp[j];
				visited[i] = 1;
				for (h_ = 0; h_ < m; h_++)
					if (h_ != h) {
						if (visited[ii[h_]])
							aa[h_][h] = 1;
						if (visited[jj[h_]])
							aa[h][h_] = 1;
					}
			}
			memset(in, 0, m * sizeof *in);
			for (h1 = 0; h1 < m; h1++)
				for (h2 = 0; h2 < m; h2++)
					if (aa[h1][h2])
						in[h2]++;
			for (h = 0; h < m; h++)
				dfs2(m, h);
			yes = 1;
			for (h = 0; h < m; h++)
				if (in[h] > 0) {
					yes = 0;
					break;
				}
			printf(yes ? "Yes\n" : "No\n");
		}
	}
	return 0;
}

Compilation message

jail.c: In function 'append':
jail.c:13:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   13 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~
jail.c: In function 'main':
jail.c:48:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |  scanf("%d", &t);
      |  ^~~~~~~~~~~~~~~
jail.c:54:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |   scanf("%d", &n);
      |   ^~~~~~~~~~~~~~~
jail.c:59:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |    scanf("%d%d", &i, &j), i--, j--;
      |    ^~~~~~~~~~~~~~~~~~~~~
jail.c:66:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |    scanf("%d", &m);
      |    ^~~~~~~~~~~~~~~
jail.c:69:5: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   69 |     scanf("%d%d", &i, &j), i--, j--;
      |     ^~~~~~~~~~~~~~~~~~~~~
jail.c:83:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   83 |    scanf("%d", &m);
      |    ^~~~~~~~~~~~~~~
jail.c:85:5: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   85 |     scanf("%d%d", &ii[h], &jj[h]), ii[h]--, jj[h]--;
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 14 ms 2004 KB Output is correct
5 Correct 25 ms 4008 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 2 ms 468 KB Output is correct
9 Correct 29 ms 4620 KB Output is correct
10 Correct 36 ms 16200 KB Output is correct
11 Correct 6 ms 852 KB Output is correct
12 Correct 30 ms 4044 KB Output is correct
13 Correct 43 ms 16180 KB Output is correct
14 Correct 57 ms 16140 KB Output is correct
15 Correct 45 ms 16204 KB Output is correct
16 Correct 59 ms 16124 KB Output is correct
17 Correct 46 ms 16176 KB Output is correct
18 Correct 55 ms 16212 KB Output is correct
19 Correct 45 ms 16212 KB Output is correct
20 Correct 55 ms 16204 KB Output is correct
21 Correct 54 ms 16228 KB Output is correct
22 Correct 50 ms 16204 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 2 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 2 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 468 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 2 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 2 ms 468 KB Output is correct
28 Correct 0 ms 212 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 2 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 468 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 2 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 2 ms 468 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 2 ms 468 KB Output is correct
30 Correct 2 ms 468 KB Output is correct
31 Correct 3 ms 432 KB Output is correct
32 Correct 2 ms 468 KB Output is correct
33 Correct 2 ms 468 KB Output is correct
34 Correct 3 ms 420 KB Output is correct
35 Correct 3 ms 428 KB Output is correct
36 Correct 3 ms 468 KB Output is correct
37 Correct 2 ms 340 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 2 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 468 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 2 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 2 ms 468 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 2 ms 468 KB Output is correct
30 Correct 2 ms 468 KB Output is correct
31 Correct 3 ms 432 KB Output is correct
32 Correct 2 ms 468 KB Output is correct
33 Correct 2 ms 468 KB Output is correct
34 Correct 3 ms 420 KB Output is correct
35 Correct 3 ms 428 KB Output is correct
36 Correct 3 ms 468 KB Output is correct
37 Correct 2 ms 340 KB Output is correct
38 Correct 29 ms 5808 KB Output is correct
39 Correct 36 ms 17616 KB Output is correct
40 Execution timed out 5093 ms 852 KB Time limit exceeded
41 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 6 ms 852 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Execution timed out 5087 ms 2432 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 14 ms 2004 KB Output is correct
5 Correct 25 ms 4008 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 2 ms 468 KB Output is correct
9 Correct 29 ms 4620 KB Output is correct
10 Correct 36 ms 16200 KB Output is correct
11 Correct 6 ms 852 KB Output is correct
12 Correct 30 ms 4044 KB Output is correct
13 Correct 43 ms 16180 KB Output is correct
14 Correct 57 ms 16140 KB Output is correct
15 Correct 45 ms 16204 KB Output is correct
16 Correct 59 ms 16124 KB Output is correct
17 Correct 46 ms 16176 KB Output is correct
18 Correct 55 ms 16212 KB Output is correct
19 Correct 45 ms 16212 KB Output is correct
20 Correct 55 ms 16204 KB Output is correct
21 Correct 54 ms 16228 KB Output is correct
22 Correct 50 ms 16204 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 468 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 2 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 1 ms 468 KB Output is correct
39 Correct 2 ms 468 KB Output is correct
40 Correct 2 ms 468 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 2 ms 468 KB Output is correct
43 Correct 1 ms 468 KB Output is correct
44 Correct 1 ms 468 KB Output is correct
45 Correct 0 ms 212 KB Output is correct
46 Correct 0 ms 340 KB Output is correct
47 Correct 1 ms 468 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 2 ms 468 KB Output is correct
50 Correct 0 ms 212 KB Output is correct
51 Correct 2 ms 468 KB Output is correct
52 Correct 2 ms 468 KB Output is correct
53 Correct 3 ms 432 KB Output is correct
54 Correct 2 ms 468 KB Output is correct
55 Correct 2 ms 468 KB Output is correct
56 Correct 3 ms 420 KB Output is correct
57 Correct 3 ms 428 KB Output is correct
58 Correct 3 ms 468 KB Output is correct
59 Correct 2 ms 340 KB Output is correct
60 Correct 29 ms 5808 KB Output is correct
61 Correct 36 ms 17616 KB Output is correct
62 Execution timed out 5093 ms 852 KB Time limit exceeded
63 Halted 0 ms 0 KB -