oj.uz

Submission #708025

# Submission time Handle Problem Language Result Execution time Memory
708025 2023-03-10T19:38:03 Z rainboy Group Photo (JOI21_ho_t3) C
100 / 100
 199 ms 67408 KB 
#include <stdio.h>
#include <string.h>

#define N	5000

int min(int a, int b) { return a < b ? a : b; }

int main() {
	static int aa[N], cc[N + 1][N + 1], dp[N + 1];
	int n, i, j, a, b, cnt;

	scanf("%d", &n);
	for (i = 0; i < n; i++)
		scanf("%d", &aa[i]), aa[i]--;
	cnt = 0;
	for (i = 0; i < n; i++)
		for (j = i + 1; j < n; j++)
			if (aa[i] < aa[j])
				cc[aa[i]][aa[j] + 1]++;
			else
				cc[aa[j]][aa[i] + 1]--, cnt++;
	for (a = n; a >= 0; a--)
		for (b = a + 1; b <= n; b++)
			cc[a][b] += cc[a + 1][b];
	for (a = n; a >= 0; a--)
		for (b = a + 1; b <= n; b++)
			cc[a][b] += cc[a][b - 1];
	memset(dp, 0x3f, (n + 1) * sizeof *dp), dp[0] = cnt;
	for (a = 0; a < n; a++)
		for (b = a + 1; b <= n; b++)
			dp[b] = min(dp[b], dp[a] + cc[a][b]);
	printf("%d\n", dp[n]);
	return 0;
}

Compilation message

Main.c: In function 'main':
Main.c:12:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
Main.c:14:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |   scanf("%d", &aa[i]), aa[i]--;
      |   ^~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 296 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 296 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 288 KB Output is correct
20 Correct 1 ms 340 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 296 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 288 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 1060 KB Output is correct
22 Correct 1 ms 1192 KB Output is correct
23 Correct 1 ms 1108 KB Output is correct
24 Correct 1 ms 1108 KB Output is correct
25 Correct 1 ms 1236 KB Output is correct
26 Correct 1 ms 1108 KB Output is correct
27 Correct 1 ms 1192 KB Output is correct
28 Correct 1 ms 1188 KB Output is correct
29 Correct 1 ms 1108 KB Output is correct
30 Correct 1 ms 1192 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 296 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 288 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 1060 KB Output is correct
22 Correct 1 ms 1192 KB Output is correct
23 Correct 1 ms 1108 KB Output is correct
24 Correct 1 ms 1108 KB Output is correct
25 Correct 1 ms 1236 KB Output is correct
26 Correct 1 ms 1108 KB Output is correct
27 Correct 1 ms 1192 KB Output is correct
28 Correct 1 ms 1188 KB Output is correct
29 Correct 1 ms 1108 KB Output is correct
30 Correct 1 ms 1192 KB Output is correct
31 Correct 5 ms 4692 KB Output is correct
32 Correct 5 ms 4692 KB Output is correct
33 Correct 5 ms 4692 KB Output is correct
34 Correct 5 ms 4692 KB Output is correct
35 Correct 5 ms 4692 KB Output is correct
36 Correct 5 ms 4692 KB Output is correct
37 Correct 6 ms 4692 KB Output is correct
38 Correct 6 ms 4776 KB Output is correct
39 Correct 5 ms 4692 KB Output is correct
40 Correct 6 ms 4692 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 296 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 288 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 1060 KB Output is correct
22 Correct 1 ms 1192 KB Output is correct
23 Correct 1 ms 1108 KB Output is correct
24 Correct 1 ms 1108 KB Output is correct
25 Correct 1 ms 1236 KB Output is correct
26 Correct 1 ms 1108 KB Output is correct
27 Correct 1 ms 1192 KB Output is correct
28 Correct 1 ms 1188 KB Output is correct
29 Correct 1 ms 1108 KB Output is correct
30 Correct 1 ms 1192 KB Output is correct
31 Correct 5 ms 4692 KB Output is correct
32 Correct 5 ms 4692 KB Output is correct
33 Correct 5 ms 4692 KB Output is correct
34 Correct 5 ms 4692 KB Output is correct
35 Correct 5 ms 4692 KB Output is correct
36 Correct 5 ms 4692 KB Output is correct
37 Correct 6 ms 4692 KB Output is correct
38 Correct 6 ms 4776 KB Output is correct
39 Correct 5 ms 4692 KB Output is correct
40 Correct 6 ms 4692 KB Output is correct
41 Correct 189 ms 67240 KB Output is correct
42 Correct 181 ms 67212 KB Output is correct
43 Correct 197 ms 67196 KB Output is correct
44 Correct 199 ms 67352 KB Output is correct
45 Correct 180 ms 67204 KB Output is correct
46 Correct 187 ms 67408 KB Output is correct
47 Correct 187 ms 67232 KB Output is correct
48 Correct 184 ms 67292 KB Output is correct
49 Correct 185 ms 67288 KB Output is correct
50 Correct 181 ms 67300 KB Output is correct
51 Correct 188 ms 67260 KB Output is correct
52 Correct 196 ms 67256 KB Output is correct
53 Correct 191 ms 67276 KB Output is correct
54 Correct 182 ms 67260 KB Output is correct
55 Correct 185 ms 67300 KB Output is correct