oj.uz

Submission #733586

# Submission time Handle Problem Language Result Execution time Memory
733586 2023-05-01T04:05:16 Z stevancv Group Photo (JOI21_ho_t3) C++14
100 / 100
 130 ms 134416 KB 
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 5e3 + 2;
const int inf = 2e9 + 2;
int dp[N][N], pref[N][N], p[N], ip[N], mn[N];
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n; cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> p[i];
        ip[p[i]] = i;
    }
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j < i; j++) {
            if (ip[j] > ip[i]) pref[i][j] = 1;
            pref[i][j] += pref[i][j - 1];
        }
    }
    for (int i = 1; i <= n; i++) {
        mn[i] = inf;
        for (int j = 1; j <= i; j++) dp[i][j] = inf;
    }
    for (int i = 1; i <= n; i++) {
        dp[i][1] = mn[i] = mn[i - 1] + pref[i][i - 1];
        for (int j = 2; j <= i; j++) {
            dp[i][j] = dp[i - 1][j - 1] + 2 * pref[i][i - j] - pref[i][i - 1] + j - 1;
            smin(mn[i], dp[i][j]);
        }
    }
    cout << mn[n] << en;
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 456 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 500 KB Output is correct
17 Correct 1 ms 448 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 456 KB Output is correct
20 Correct 1 ms 468 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 456 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 500 KB Output is correct
17 Correct 1 ms 448 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 456 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 2004 KB Output is correct
22 Correct 2 ms 2004 KB Output is correct
23 Correct 1 ms 2004 KB Output is correct
24 Correct 2 ms 2124 KB Output is correct
25 Correct 1 ms 2116 KB Output is correct
26 Correct 1 ms 2004 KB Output is correct
27 Correct 1 ms 2004 KB Output is correct
28 Correct 1 ms 2004 KB Output is correct
29 Correct 1 ms 2004 KB Output is correct
30 Correct 1 ms 2004 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 456 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 500 KB Output is correct
17 Correct 1 ms 448 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 456 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 2004 KB Output is correct
22 Correct 2 ms 2004 KB Output is correct
23 Correct 1 ms 2004 KB Output is correct
24 Correct 2 ms 2124 KB Output is correct
25 Correct 1 ms 2116 KB Output is correct
26 Correct 1 ms 2004 KB Output is correct
27 Correct 1 ms 2004 KB Output is correct
28 Correct 1 ms 2004 KB Output is correct
29 Correct 1 ms 2004 KB Output is correct
30 Correct 1 ms 2004 KB Output is correct
31 Correct 6 ms 9172 KB Output is correct
32 Correct 6 ms 9300 KB Output is correct
33 Correct 6 ms 9172 KB Output is correct
34 Correct 6 ms 9300 KB Output is correct
35 Correct 6 ms 9292 KB Output is correct
36 Correct 6 ms 9288 KB Output is correct
37 Correct 6 ms 9300 KB Output is correct
38 Correct 6 ms 9300 KB Output is correct
39 Correct 7 ms 9248 KB Output is correct
40 Correct 6 ms 9288 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 456 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 500 KB Output is correct
17 Correct 1 ms 448 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 456 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 2004 KB Output is correct
22 Correct 2 ms 2004 KB Output is correct
23 Correct 1 ms 2004 KB Output is correct
24 Correct 2 ms 2124 KB Output is correct
25 Correct 1 ms 2116 KB Output is correct
26 Correct 1 ms 2004 KB Output is correct
27 Correct 1 ms 2004 KB Output is correct
28 Correct 1 ms 2004 KB Output is correct
29 Correct 1 ms 2004 KB Output is correct
30 Correct 1 ms 2004 KB Output is correct
31 Correct 6 ms 9172 KB Output is correct
32 Correct 6 ms 9300 KB Output is correct
33 Correct 6 ms 9172 KB Output is correct
34 Correct 6 ms 9300 KB Output is correct
35 Correct 6 ms 9292 KB Output is correct
36 Correct 6 ms 9288 KB Output is correct
37 Correct 6 ms 9300 KB Output is correct
38 Correct 6 ms 9300 KB Output is correct
39 Correct 7 ms 9248 KB Output is correct
40 Correct 6 ms 9288 KB Output is correct
41 Correct 120 ms 134212 KB Output is correct
42 Correct 119 ms 134232 KB Output is correct
43 Correct 115 ms 134220 KB Output is correct
44 Correct 120 ms 134260 KB Output is correct
45 Correct 115 ms 134252 KB Output is correct
46 Correct 117 ms 134220 KB Output is correct
47 Correct 117 ms 134228 KB Output is correct
48 Correct 116 ms 134276 KB Output is correct
49 Correct 126 ms 134416 KB Output is correct
50 Correct 119 ms 134236 KB Output is correct
51 Correct 130 ms 134288 KB Output is correct
52 Correct 116 ms 134240 KB Output is correct
53 Correct 121 ms 134348 KB Output is correct
54 Correct 116 ms 134312 KB Output is correct
55 Correct 118 ms 134220 KB Output is correct