답안 #879014

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
879014	2023-11-26T06:00:44 Z	frostray8653	Group Photo (JOI21_ho_t3)	C++17	100 / 100	525 ms	392576 KB

Main

#include <bits/stdc++.h>
#define int long long
#define IO ios::sync_with_stdio(0), cin.tie(0);
#define FOR(i, a, b) for (int i = a; i <= b; i++)
using namespace std;
using pii = pair<int, int>;
void dbg() {;}
template<class T, class ...U>
void dbg(T a, U ...b) { cout << a << " "; dbg(b...); }
void ent() { cout << "\n"; }
const int INF = 1e16;
const int N = 5005;

int a[N], pos[N];
int cnt[2][N][N];
int dp[N];

signed main() {
    IO;

    int n;
    cin >> n;
    FOR(i, 1, n) {
        cin >> a[i];
        pos[a[i]] = i;
    }
    FOR(i, 1, n) {
        int x = pos[i];
        for (int j = 1; j <= n; j++) {
            cnt[0][i][j] = cnt[0][i - 1][j] + cnt[0][i][j - 1] - cnt[0][i - 1][j - 1];
            cnt[0][i][j] += (j == x);
        }
        for (int j = n; j >= 1; j--) {
            cnt[1][i][j] = cnt[1][i - 1][j] + cnt[1][i][j + 1] - cnt[1][i - 1][j + 1];
            cnt[1][i][j] += (j == x);
        }
    }
    // FOR(i, 1, n) {
    //     FOR(j, 1, n) dbg(cnt[1][i][j]);
    //     ent();
    // }

    fill(dp, dp + N, INF);
    dp[0] = 0;
    FOR(l, 1, n) {
        int cst = 0;
        FOR(r, l, n) {
            cst += cnt[1][l - 1][pos[r]] + (cnt[0][r - 1][pos[r]] - cnt[0][l - 1][pos[r]]);
            dp[r] = min(dp[r], dp[l - 1] + cst);
        }
        cst = 0;
        FOR(r, l, n) {
            cst += cnt[1][r - 1][pos[r]];
            dp[r] = min(dp[r], dp[l - 1] + cst);
        }
    }
    cout << dp[n] << "\n";

    return 0;
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	460 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	420 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	460 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	420 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	604 KB	Output is correct
12	Correct	0 ms	604 KB	Output is correct
13	Correct	0 ms	604 KB	Output is correct
14	Correct	0 ms	604 KB	Output is correct
15	Correct	0 ms	604 KB	Output is correct
16	Correct	1 ms	604 KB	Output is correct
17	Correct	0 ms	604 KB	Output is correct
18	Correct	0 ms	604 KB	Output is correct
19	Correct	1 ms	600 KB	Output is correct
20	Correct	0 ms	604 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	460 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	420 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	604 KB	Output is correct
12	Correct	0 ms	604 KB	Output is correct
13	Correct	0 ms	604 KB	Output is correct
14	Correct	0 ms	604 KB	Output is correct
15	Correct	0 ms	604 KB	Output is correct
16	Correct	1 ms	604 KB	Output is correct
17	Correct	0 ms	604 KB	Output is correct
18	Correct	0 ms	604 KB	Output is correct
19	Correct	1 ms	600 KB	Output is correct
20	Correct	0 ms	604 KB	Output is correct
21	Correct	2 ms	2652 KB	Output is correct
22	Correct	2 ms	2652 KB	Output is correct
23	Correct	2 ms	2652 KB	Output is correct
24	Correct	2 ms	2652 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2652 KB	Output is correct
27	Correct	1 ms	2772 KB	Output is correct
28	Correct	2 ms	2648 KB	Output is correct
29	Correct	2 ms	2772 KB	Output is correct
30	Correct	1 ms	2652 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	460 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	420 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	604 KB	Output is correct
12	Correct	0 ms	604 KB	Output is correct
13	Correct	0 ms	604 KB	Output is correct
14	Correct	0 ms	604 KB	Output is correct
15	Correct	0 ms	604 KB	Output is correct
16	Correct	1 ms	604 KB	Output is correct
17	Correct	0 ms	604 KB	Output is correct
18	Correct	0 ms	604 KB	Output is correct
19	Correct	1 ms	600 KB	Output is correct
20	Correct	0 ms	604 KB	Output is correct
21	Correct	2 ms	2652 KB	Output is correct
22	Correct	2 ms	2652 KB	Output is correct
23	Correct	2 ms	2652 KB	Output is correct
24	Correct	2 ms	2652 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2652 KB	Output is correct
27	Correct	1 ms	2772 KB	Output is correct
28	Correct	2 ms	2648 KB	Output is correct
29	Correct	2 ms	2772 KB	Output is correct
30	Correct	1 ms	2652 KB	Output is correct
31	Correct	12 ms	19804 KB	Output is correct
32	Correct	12 ms	19804 KB	Output is correct
33	Correct	13 ms	20040 KB	Output is correct
34	Correct	14 ms	20060 KB	Output is correct
35	Correct	13 ms	20060 KB	Output is correct
36	Correct	15 ms	19884 KB	Output is correct
37	Correct	15 ms	19896 KB	Output is correct
38	Correct	15 ms	20060 KB	Output is correct
39	Correct	13 ms	20072 KB	Output is correct
40	Correct	13 ms	20056 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	460 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	420 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	604 KB	Output is correct
12	Correct	0 ms	604 KB	Output is correct
13	Correct	0 ms	604 KB	Output is correct
14	Correct	0 ms	604 KB	Output is correct
15	Correct	0 ms	604 KB	Output is correct
16	Correct	1 ms	604 KB	Output is correct
17	Correct	0 ms	604 KB	Output is correct
18	Correct	0 ms	604 KB	Output is correct
19	Correct	1 ms	600 KB	Output is correct
20	Correct	0 ms	604 KB	Output is correct
21	Correct	2 ms	2652 KB	Output is correct
22	Correct	2 ms	2652 KB	Output is correct
23	Correct	2 ms	2652 KB	Output is correct
24	Correct	2 ms	2652 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2652 KB	Output is correct
27	Correct	1 ms	2772 KB	Output is correct
28	Correct	2 ms	2648 KB	Output is correct
29	Correct	2 ms	2772 KB	Output is correct
30	Correct	1 ms	2652 KB	Output is correct
31	Correct	12 ms	19804 KB	Output is correct
32	Correct	12 ms	19804 KB	Output is correct
33	Correct	13 ms	20040 KB	Output is correct
34	Correct	14 ms	20060 KB	Output is correct
35	Correct	13 ms	20060 KB	Output is correct
36	Correct	15 ms	19884 KB	Output is correct
37	Correct	15 ms	19896 KB	Output is correct
38	Correct	15 ms	20060 KB	Output is correct
39	Correct	13 ms	20072 KB	Output is correct
40	Correct	13 ms	20056 KB	Output is correct
41	Correct	525 ms	392140 KB	Output is correct
42	Correct	464 ms	392172 KB	Output is correct
43	Correct	467 ms	392496 KB	Output is correct
44	Correct	449 ms	392276 KB	Output is correct
45	Correct	480 ms	392292 KB	Output is correct
46	Correct	437 ms	392372 KB	Output is correct
47	Correct	456 ms	392532 KB	Output is correct
48	Correct	457 ms	392264 KB	Output is correct
49	Correct	448 ms	392280 KB	Output is correct
50	Correct	444 ms	392576 KB	Output is correct
51	Correct	448 ms	392272 KB	Output is correct
52	Correct	455 ms	392352 KB	Output is correct
53	Correct	452 ms	392272 KB	Output is correct
54	Correct	457 ms	392280 KB	Output is correct
55	Correct	468 ms	392524 KB	Output is correct

답안 #879014

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