답안 #629962

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
629962	2022-08-15T12:39:59 Z	QwertyPi	Group Photo (JOI21_ho_t3)	C++14	100 / 100	1024 ms	67520 KB

Main

#include <bits/stdc++.h>
#define fi first
#define se second
using namespace std;

const int N = 5001;
int h[N];
int h_i[N];
int dp[N][N];
int dp2[N];

struct BIT{
	int bit[N];
	BIT() = default;
	BIT(int n){
		fill(bit, bit + n, 0);
	}
	void clear(int n){
		fill(bit, bit + n, 0);
	}
	void upd(int x, int v){
		for(int i = x; i < N; i = i | (i + 1)){
			bit[i] += v;
		}
	}
	int qry(int x){
		int ret = 0;
		for(int i = x; i >= 0; i = (i & (i + 1)) - 1){
			ret += bit[i];
		}
		return ret;
	}
};

int32_t main(){
	int n;
	cin >> n;
	for(int i = 0; i < n; i++){
		cin >> h[i];
		h_i[h[i]] = i;
	}
	for(int sm = 1; sm <= n; sm++){
		BIT bit(n);
		int cnt;
		
		cnt = 0;
		for(int i = sm; i <= n; i++){
			bit.upd(h_i[i], 1);
		}
		for(int i = sm; i <= n; i++){
			cnt += bit.qry(h_i[i] - 1);
			bit.upd(h_i[i], -1);
			dp[i][sm] = cnt;
		}
		bit.clear(n);
		cnt = 0;
		for(int i = sm; i <= n; i++){
			cnt += bit.qry(h_i[i] - 1);
			bit.upd(h_i[i], 1);
			dp[i][sm] += cnt;
		}

		bit.clear(n);
		cnt = 0;
		for(int i = sm; i <= n; i++){
			cnt += (i - sm) - bit.qry(h_i[i]);
			bit.upd(h_i[i], 1);
			dp[i][sm] -= cnt;
		}
	}
	fill(dp2 + 1, dp2 + n + 1, (1 << 30));
	for(int i = 0; i < n; i++){
		for(int j = 0; j <= i; j++){
			dp2[i + 1] = min(dp2[i + 1], dp2[j] + dp[i + 1][j + 1]);
		}
	}
	cout << dp2[n] << endl;
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	328 KB	Output is correct
7	Correct	1 ms	324 KB	Output is correct
8	Correct	1 ms	316 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	328 KB	Output is correct
7	Correct	1 ms	324 KB	Output is correct
8	Correct	1 ms	316 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	328 KB	Output is correct
13	Correct	1 ms	324 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	320 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	328 KB	Output is correct
7	Correct	1 ms	324 KB	Output is correct
8	Correct	1 ms	316 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	328 KB	Output is correct
13	Correct	1 ms	324 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	320 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	2 ms	1108 KB	Output is correct
22	Correct	2 ms	1092 KB	Output is correct
23	Correct	2 ms	1108 KB	Output is correct
24	Correct	2 ms	1108 KB	Output is correct
25	Correct	2 ms	1220 KB	Output is correct
26	Correct	2 ms	1108 KB	Output is correct
27	Correct	2 ms	1108 KB	Output is correct
28	Correct	2 ms	1108 KB	Output is correct
29	Correct	2 ms	1108 KB	Output is correct
30	Correct	3 ms	1108 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	328 KB	Output is correct
7	Correct	1 ms	324 KB	Output is correct
8	Correct	1 ms	316 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	328 KB	Output is correct
13	Correct	1 ms	324 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	320 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	2 ms	1108 KB	Output is correct
22	Correct	2 ms	1092 KB	Output is correct
23	Correct	2 ms	1108 KB	Output is correct
24	Correct	2 ms	1108 KB	Output is correct
25	Correct	2 ms	1220 KB	Output is correct
26	Correct	2 ms	1108 KB	Output is correct
27	Correct	2 ms	1108 KB	Output is correct
28	Correct	2 ms	1108 KB	Output is correct
29	Correct	2 ms	1108 KB	Output is correct
30	Correct	3 ms	1108 KB	Output is correct
31	Correct	24 ms	4708 KB	Output is correct
32	Correct	26 ms	4788 KB	Output is correct
33	Correct	24 ms	4808 KB	Output is correct
34	Correct	27 ms	4744 KB	Output is correct
35	Correct	24 ms	4696 KB	Output is correct
36	Correct	24 ms	4820 KB	Output is correct
37	Correct	25 ms	4816 KB	Output is correct
38	Correct	24 ms	4692 KB	Output is correct
39	Correct	25 ms	4808 KB	Output is correct
40	Correct	24 ms	4736 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	328 KB	Output is correct
7	Correct	1 ms	324 KB	Output is correct
8	Correct	1 ms	316 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	328 KB	Output is correct
13	Correct	1 ms	324 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	320 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	2 ms	1108 KB	Output is correct
22	Correct	2 ms	1092 KB	Output is correct
23	Correct	2 ms	1108 KB	Output is correct
24	Correct	2 ms	1108 KB	Output is correct
25	Correct	2 ms	1220 KB	Output is correct
26	Correct	2 ms	1108 KB	Output is correct
27	Correct	2 ms	1108 KB	Output is correct
28	Correct	2 ms	1108 KB	Output is correct
29	Correct	2 ms	1108 KB	Output is correct
30	Correct	3 ms	1108 KB	Output is correct
31	Correct	24 ms	4708 KB	Output is correct
32	Correct	26 ms	4788 KB	Output is correct
33	Correct	24 ms	4808 KB	Output is correct
34	Correct	27 ms	4744 KB	Output is correct
35	Correct	24 ms	4696 KB	Output is correct
36	Correct	24 ms	4820 KB	Output is correct
37	Correct	25 ms	4816 KB	Output is correct
38	Correct	24 ms	4692 KB	Output is correct
39	Correct	25 ms	4808 KB	Output is correct
40	Correct	24 ms	4736 KB	Output is correct
41	Correct	973 ms	67420 KB	Output is correct
42	Correct	989 ms	67264 KB	Output is correct
43	Correct	1024 ms	67432 KB	Output is correct
44	Correct	972 ms	67416 KB	Output is correct
45	Correct	965 ms	67416 KB	Output is correct
46	Correct	977 ms	67272 KB	Output is correct
47	Correct	969 ms	67520 KB	Output is correct
48	Correct	965 ms	67400 KB	Output is correct
49	Correct	989 ms	67356 KB	Output is correct
50	Correct	994 ms	67292 KB	Output is correct
51	Correct	981 ms	67264 KB	Output is correct
52	Correct	984 ms	67320 KB	Output is correct
53	Correct	978 ms	67396 KB	Output is correct
54	Correct	967 ms	67352 KB	Output is correct
55	Correct	980 ms	67272 KB	Output is correct

답안 #629962

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