oj.uz

Submission #397698

# Submission time Handle Problem Language Result Execution time Memory
397698 2021-05-02T21:50:11 Z ChrisT Group Photo (JOI21_ho_t3) C++17
100 / 100
 454 ms 98692 KB 
#include <bits/stdc++.h>
using namespace std;
const int MN = 5e3 + 5;
int dp[MN], f[MN][MN], a[MN], stopAt[MN];
int main () {
	int n; scanf ("%d",&n);
	for (int i = 1; i <= n; i++) scanf ("%d",&a[i]);
	for (int i = 1; i <= n; i++) {
		for (int j = i+1; j <= n; j++) {
			if (a[i] < a[j]) {
				f[1][a[j]]++; f[a[i]+1][a[j]]--;
			} else {
				f[a[j]+1][a[i]]++; f[a[i]+1][a[i]]--;
			}
		}
	}
	for (int i = 1; i <= n; i++) 
		for (int j = 1; j <= n; j++) 
			f[i][j] += f[i-1][j] + f[i][j-1] - f[i-1][j-1];
	for (int i = 1; i <= n; i++) {
		dp[i] = 1e9;
		for (int j = i; j >= 1; j--) dp[i] = min(dp[i],dp[j-1]+f[j][i]);
	}
	printf ("%d\n",dp[n]);
	return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:6:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    6 |  int n; scanf ("%d",&n);
      |         ~~~~~~^~~~~~~~~
Main.cpp:7:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    7 |  for (int i = 1; i <= n; i++) scanf ("%d",&a[i]);
      |                               ~~~~~~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 2 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 2 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1228 KB Output is correct
22 Correct 1 ms 1208 KB Output is correct
23 Correct 1 ms 1228 KB Output is correct
24 Correct 1 ms 1228 KB Output is correct
25 Correct 1 ms 1200 KB Output is correct
26 Correct 1 ms 1228 KB Output is correct
27 Correct 2 ms 1228 KB Output is correct
28 Correct 1 ms 1228 KB Output is correct
29 Correct 1 ms 1204 KB Output is correct
30 Correct 1 ms 1200 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 2 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1228 KB Output is correct
22 Correct 1 ms 1208 KB Output is correct
23 Correct 1 ms 1228 KB Output is correct
24 Correct 1 ms 1228 KB Output is correct
25 Correct 1 ms 1200 KB Output is correct
26 Correct 1 ms 1228 KB Output is correct
27 Correct 2 ms 1228 KB Output is correct
28 Correct 1 ms 1228 KB Output is correct
29 Correct 1 ms 1204 KB Output is correct
30 Correct 1 ms 1200 KB Output is correct
31 Correct 9 ms 5964 KB Output is correct
32 Correct 8 ms 5964 KB Output is correct
33 Correct 10 ms 5964 KB Output is correct
34 Correct 8 ms 5964 KB Output is correct
35 Correct 8 ms 5964 KB Output is correct
36 Correct 9 ms 5964 KB Output is correct
37 Correct 9 ms 6008 KB Output is correct
38 Correct 8 ms 5964 KB Output is correct
39 Correct 9 ms 5964 KB Output is correct
40 Correct 8 ms 5964 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 2 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1228 KB Output is correct
22 Correct 1 ms 1208 KB Output is correct
23 Correct 1 ms 1228 KB Output is correct
24 Correct 1 ms 1228 KB Output is correct
25 Correct 1 ms 1200 KB Output is correct
26 Correct 1 ms 1228 KB Output is correct
27 Correct 2 ms 1228 KB Output is correct
28 Correct 1 ms 1228 KB Output is correct
29 Correct 1 ms 1204 KB Output is correct
30 Correct 1 ms 1200 KB Output is correct
31 Correct 9 ms 5964 KB Output is correct
32 Correct 8 ms 5964 KB Output is correct
33 Correct 10 ms 5964 KB Output is correct
34 Correct 8 ms 5964 KB Output is correct
35 Correct 8 ms 5964 KB Output is correct
36 Correct 9 ms 5964 KB Output is correct
37 Correct 9 ms 6008 KB Output is correct
38 Correct 8 ms 5964 KB Output is correct
39 Correct 9 ms 5964 KB Output is correct
40 Correct 8 ms 5964 KB Output is correct
41 Correct 444 ms 98216 KB Output is correct
42 Correct 443 ms 98448 KB Output is correct
43 Correct 449 ms 98308 KB Output is correct
44 Correct 444 ms 98280 KB Output is correct
45 Correct 452 ms 98356 KB Output is correct
46 Correct 442 ms 98288 KB Output is correct
47 Correct 444 ms 98400 KB Output is correct
48 Correct 448 ms 98392 KB Output is correct
49 Correct 441 ms 98372 KB Output is correct
50 Correct 448 ms 98312 KB Output is correct
51 Correct 450 ms 98356 KB Output is correct
52 Correct 447 ms 98692 KB Output is correct
53 Correct 454 ms 98296 KB Output is correct
54 Correct 448 ms 98432 KB Output is correct
55 Correct 453 ms 98372 KB Output is correct