답안 #380814

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
380814	2021-03-23T04:56:15 Z	anonymous	Group Photo (JOI21_ho_t3)	C++14	100 / 100	649 ms	98700 KB

Main

#include <iostream>
#define MAXN 5005
using namespace std;

int N, H[MAXN], pos[MAXN];
int psum[MAXN][MAXN],dp[MAXN];

int main() {
    scanf("%d",&N);
    for (int i=1; i<=N; i++) {
        scanf("%d",&H[i]);
        pos[H[i]] = i;
    }
    //do prefix sum
    for (int i=1; i <= N; i++) {
        for (int h=1; h <= N; h++) {
            psum[i][h] = psum[i-1][h] + psum[i][h-1] + (H[i] == h) - psum[i-1][h-1];
        }
    }

    //dp
    for (int i=N-1; i>=1; i--) {
        dp[i] = 1<<30; //subsequence i...N
        int cost = 0;
        for (int j=i; j <= N; j++) {
            cost += 2*(psum[pos[j]][j-1]-psum[pos[j]][i-1])-(j-i)+(psum[pos[j]][N]-psum[pos[j]][j]);
            dp[i] = min(dp[i], dp[j+1] + cost);
        }
    }

    printf("%d",dp[1]);
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    9 |     scanf("%d",&N);
      |     ~~~~~^~~~~~~~~
Main.cpp:11:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   11 |         scanf("%d",&H[i]);
      |         ~~~~~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Correct	1 ms	512 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Correct	1 ms	512 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	2 ms	1260 KB	Output is correct
22	Correct	2 ms	1260 KB	Output is correct
23	Correct	2 ms	1260 KB	Output is correct
24	Correct	2 ms	1260 KB	Output is correct
25	Correct	2 ms	1260 KB	Output is correct
26	Correct	2 ms	1260 KB	Output is correct
27	Correct	2 ms	1260 KB	Output is correct
28	Correct	2 ms	1260 KB	Output is correct
29	Correct	2 ms	1260 KB	Output is correct
30	Correct	2 ms	1260 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Correct	1 ms	512 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	2 ms	1260 KB	Output is correct
22	Correct	2 ms	1260 KB	Output is correct
23	Correct	2 ms	1260 KB	Output is correct
24	Correct	2 ms	1260 KB	Output is correct
25	Correct	2 ms	1260 KB	Output is correct
26	Correct	2 ms	1260 KB	Output is correct
27	Correct	2 ms	1260 KB	Output is correct
28	Correct	2 ms	1260 KB	Output is correct
29	Correct	2 ms	1260 KB	Output is correct
30	Correct	2 ms	1260 KB	Output is correct
31	Correct	10 ms	5996 KB	Output is correct
32	Correct	10 ms	5996 KB	Output is correct
33	Correct	10 ms	5996 KB	Output is correct
34	Correct	10 ms	6124 KB	Output is correct
35	Correct	10 ms	6124 KB	Output is correct
36	Correct	12 ms	6124 KB	Output is correct
37	Correct	10 ms	6124 KB	Output is correct
38	Correct	10 ms	6124 KB	Output is correct
39	Correct	10 ms	6124 KB	Output is correct
40	Correct	10 ms	6124 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Correct	1 ms	512 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	2 ms	1260 KB	Output is correct
22	Correct	2 ms	1260 KB	Output is correct
23	Correct	2 ms	1260 KB	Output is correct
24	Correct	2 ms	1260 KB	Output is correct
25	Correct	2 ms	1260 KB	Output is correct
26	Correct	2 ms	1260 KB	Output is correct
27	Correct	2 ms	1260 KB	Output is correct
28	Correct	2 ms	1260 KB	Output is correct
29	Correct	2 ms	1260 KB	Output is correct
30	Correct	2 ms	1260 KB	Output is correct
31	Correct	10 ms	5996 KB	Output is correct
32	Correct	10 ms	5996 KB	Output is correct
33	Correct	10 ms	5996 KB	Output is correct
34	Correct	10 ms	6124 KB	Output is correct
35	Correct	10 ms	6124 KB	Output is correct
36	Correct	12 ms	6124 KB	Output is correct
37	Correct	10 ms	6124 KB	Output is correct
38	Correct	10 ms	6124 KB	Output is correct
39	Correct	10 ms	6124 KB	Output is correct
40	Correct	10 ms	6124 KB	Output is correct
41	Correct	609 ms	98340 KB	Output is correct
42	Correct	628 ms	98412 KB	Output is correct
43	Correct	627 ms	98412 KB	Output is correct
44	Correct	610 ms	98412 KB	Output is correct
45	Correct	612 ms	98540 KB	Output is correct
46	Correct	619 ms	98540 KB	Output is correct
47	Correct	617 ms	98284 KB	Output is correct
48	Correct	623 ms	98412 KB	Output is correct
49	Correct	614 ms	98700 KB	Output is correct
50	Correct	649 ms	98528 KB	Output is correct
51	Correct	618 ms	98284 KB	Output is correct
52	Correct	636 ms	98412 KB	Output is correct
53	Correct	609 ms	98412 KB	Output is correct
54	Correct	621 ms	98284 KB	Output is correct
55	Correct	641 ms	98284 KB	Output is correct

답안 #380814

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 7.0 / 7.0

Subtask #3 32.0 / 32.0

Subtask #4 20.0 / 20.0

Subtask #5 36.0 / 36.0

Subtask #1
5.0 / 5.0

Subtask #2
7.0 / 7.0

Subtask #3
32.0 / 32.0

Subtask #4
20.0 / 20.0

Subtask #5
36.0 / 36.0