Submission #379801

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
379801	2021-03-19T10:39:25 Z	TeaTime	Group Photo (JOI21_ho_t3)	C++17	100 / 100	635 ms	118892 KB

Main

#include <iostream>
#include <vector>
#include <algorithm>
#include <bitset>
#include <set>
#include <map>
#include <string>
#include <cmath>
#include <ctime>
#include <queue>
 
using namespace std;
 
typedef long long ll;
typedef long double ld;
#define fastInp cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);
 
const ll  MOD = 1e9 + 7, MX2 = 1e6, SZ = 5030, INF = 1e9;
 
ll n;
vector<ll> vec;
 
ll dp[SZ];
ll invs[SZ][SZ];
 
signed main() {
    fastInp;
 
    cin >> n;
    vec.resize(n);
 
    for (auto& c : vec) cin >> c;
 
    for (int i = 0; i < n; i++) {
        for (int j = i + 1; j < n; j++) {
            if (vec[i] > vec[j]) {
                invs[vec[j]][vec[i]]++;
            }
        }
    }
 
    for (int i = 1; i <= n; i++) dp[i] = INF;
 
    for (int i = 1; i < SZ; i++) {
        for (int l = 0; l < SZ; l++) {
            ll r = i + l;
            if (r >= SZ) continue;
 
            invs[l][r] += invs[l][r - 1] + invs[l + 1][r] - invs[l + 1][r - 1];
        }
    }
 
   /* for (int k = 1; k <= n; k++) {
        ll l = (k);
        ll cst = (invs[0][n] - invs[k + 1][n] - invs[0][k]) + (l * (l - 1) / 2 - invs[0][k]);
        dp[k] = min(dp[k], dp[0] + cst);
    }*/
 
    for (int i = 1; i <= n; i++) {
        ll k = 0, ind = 0;
        for (int j = 0; j < n; j++) {
            if (vec[j] == i) ind = j;
        }
 
        for (int j = 0; j < ind; j++) {
            if (vec[j] > i) k++;
        }
 
        dp[i] = min(dp[i], dp[i - 1] + k);
 
        for (int k = i + 1; k <= n; k++) {
            ll l = (k - i + 1);
            ll cst = (invs[i][n] - invs[k + 1][n] - invs[i][k]) + (l * (l - 1) / 2 - invs[i][k]);
            dp[k] = min(dp[k], dp[i - 1] + cst);
            if (dp[n] == 3) {
                cout << "";
            }
        }
    }
 
    cout << dp[n];
 
    return 0;
}
 
/*
9 12
1 2
4 2
5 8
4 6
6 9
2 9
8 7
8 3
7 1
9 4
3 5
3 4
 
3 4
2 1
2 3
3 1
1 3
*/

Subtask #1
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	254 ms	118636 KB	Output is correct
2	Correct	249 ms	118636 KB	Output is correct
3	Correct	241 ms	118636 KB	Output is correct
4	Correct	250 ms	118764 KB	Output is correct
5	Correct	252 ms	118636 KB	Output is correct
6	Correct	269 ms	118636 KB	Output is correct
7	Correct	248 ms	118668 KB	Output is correct
8	Correct	253 ms	118636 KB	Output is correct
9	Correct	251 ms	118564 KB	Output is correct
10	Correct	245 ms	118636 KB	Output is correct

Subtask #2
7.0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	254 ms	118636 KB	Output is correct
2	Correct	249 ms	118636 KB	Output is correct
3	Correct	241 ms	118636 KB	Output is correct
4	Correct	250 ms	118764 KB	Output is correct
5	Correct	252 ms	118636 KB	Output is correct
6	Correct	269 ms	118636 KB	Output is correct
7	Correct	248 ms	118668 KB	Output is correct
8	Correct	253 ms	118636 KB	Output is correct
9	Correct	251 ms	118564 KB	Output is correct
10	Correct	245 ms	118636 KB	Output is correct
11	Correct	267 ms	118764 KB	Output is correct
12	Correct	246 ms	118636 KB	Output is correct
13	Correct	246 ms	118644 KB	Output is correct
14	Correct	261 ms	118636 KB	Output is correct
15	Correct	244 ms	118636 KB	Output is correct
16	Correct	249 ms	118764 KB	Output is correct
17	Correct	247 ms	118616 KB	Output is correct
18	Correct	243 ms	118636 KB	Output is correct
19	Correct	246 ms	118648 KB	Output is correct
20	Correct	289 ms	118636 KB	Output is correct

Subtask #3
32.0 / 32.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	254 ms	118636 KB	Output is correct
2	Correct	249 ms	118636 KB	Output is correct
3	Correct	241 ms	118636 KB	Output is correct
4	Correct	250 ms	118764 KB	Output is correct
5	Correct	252 ms	118636 KB	Output is correct
6	Correct	269 ms	118636 KB	Output is correct
7	Correct	248 ms	118668 KB	Output is correct
8	Correct	253 ms	118636 KB	Output is correct
9	Correct	251 ms	118564 KB	Output is correct
10	Correct	245 ms	118636 KB	Output is correct
11	Correct	267 ms	118764 KB	Output is correct
12	Correct	246 ms	118636 KB	Output is correct
13	Correct	246 ms	118644 KB	Output is correct
14	Correct	261 ms	118636 KB	Output is correct
15	Correct	244 ms	118636 KB	Output is correct
16	Correct	249 ms	118764 KB	Output is correct
17	Correct	247 ms	118616 KB	Output is correct
18	Correct	243 ms	118636 KB	Output is correct
19	Correct	246 ms	118648 KB	Output is correct
20	Correct	289 ms	118636 KB	Output is correct
21	Correct	251 ms	118636 KB	Output is correct
22	Correct	247 ms	118636 KB	Output is correct
23	Correct	245 ms	118636 KB	Output is correct
24	Correct	246 ms	118636 KB	Output is correct
25	Correct	245 ms	118636 KB	Output is correct
26	Correct	253 ms	118636 KB	Output is correct
27	Correct	243 ms	118636 KB	Output is correct
28	Correct	251 ms	118636 KB	Output is correct
29	Correct	262 ms	118508 KB	Output is correct
30	Correct	246 ms	118636 KB	Output is correct

Subtask #4
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	254 ms	118636 KB	Output is correct
2	Correct	249 ms	118636 KB	Output is correct
3	Correct	241 ms	118636 KB	Output is correct
4	Correct	250 ms	118764 KB	Output is correct
5	Correct	252 ms	118636 KB	Output is correct
6	Correct	269 ms	118636 KB	Output is correct
7	Correct	248 ms	118668 KB	Output is correct
8	Correct	253 ms	118636 KB	Output is correct
9	Correct	251 ms	118564 KB	Output is correct
10	Correct	245 ms	118636 KB	Output is correct
11	Correct	267 ms	118764 KB	Output is correct
12	Correct	246 ms	118636 KB	Output is correct
13	Correct	246 ms	118644 KB	Output is correct
14	Correct	261 ms	118636 KB	Output is correct
15	Correct	244 ms	118636 KB	Output is correct
16	Correct	249 ms	118764 KB	Output is correct
17	Correct	247 ms	118616 KB	Output is correct
18	Correct	243 ms	118636 KB	Output is correct
19	Correct	246 ms	118648 KB	Output is correct
20	Correct	289 ms	118636 KB	Output is correct
21	Correct	251 ms	118636 KB	Output is correct
22	Correct	247 ms	118636 KB	Output is correct
23	Correct	245 ms	118636 KB	Output is correct
24	Correct	246 ms	118636 KB	Output is correct
25	Correct	245 ms	118636 KB	Output is correct
26	Correct	253 ms	118636 KB	Output is correct
27	Correct	243 ms	118636 KB	Output is correct
28	Correct	251 ms	118636 KB	Output is correct
29	Correct	262 ms	118508 KB	Output is correct
30	Correct	246 ms	118636 KB	Output is correct
31	Correct	256 ms	118548 KB	Output is correct
32	Correct	286 ms	118636 KB	Output is correct
33	Correct	247 ms	118636 KB	Output is correct
34	Correct	252 ms	118764 KB	Output is correct
35	Correct	256 ms	118636 KB	Output is correct
36	Correct	250 ms	118636 KB	Output is correct
37	Correct	254 ms	118636 KB	Output is correct
38	Correct	249 ms	118636 KB	Output is correct
39	Correct	245 ms	118636 KB	Output is correct
40	Correct	253 ms	118764 KB	Output is correct

Subtask #5
36.0 / 36.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	254 ms	118636 KB	Output is correct
2	Correct	249 ms	118636 KB	Output is correct
3	Correct	241 ms	118636 KB	Output is correct
4	Correct	250 ms	118764 KB	Output is correct
5	Correct	252 ms	118636 KB	Output is correct
6	Correct	269 ms	118636 KB	Output is correct
7	Correct	248 ms	118668 KB	Output is correct
8	Correct	253 ms	118636 KB	Output is correct
9	Correct	251 ms	118564 KB	Output is correct
10	Correct	245 ms	118636 KB	Output is correct
11	Correct	267 ms	118764 KB	Output is correct
12	Correct	246 ms	118636 KB	Output is correct
13	Correct	246 ms	118644 KB	Output is correct
14	Correct	261 ms	118636 KB	Output is correct
15	Correct	244 ms	118636 KB	Output is correct
16	Correct	249 ms	118764 KB	Output is correct
17	Correct	247 ms	118616 KB	Output is correct
18	Correct	243 ms	118636 KB	Output is correct
19	Correct	246 ms	118648 KB	Output is correct
20	Correct	289 ms	118636 KB	Output is correct
21	Correct	251 ms	118636 KB	Output is correct
22	Correct	247 ms	118636 KB	Output is correct
23	Correct	245 ms	118636 KB	Output is correct
24	Correct	246 ms	118636 KB	Output is correct
25	Correct	245 ms	118636 KB	Output is correct
26	Correct	253 ms	118636 KB	Output is correct
27	Correct	243 ms	118636 KB	Output is correct
28	Correct	251 ms	118636 KB	Output is correct
29	Correct	262 ms	118508 KB	Output is correct
30	Correct	246 ms	118636 KB	Output is correct
31	Correct	256 ms	118548 KB	Output is correct
32	Correct	286 ms	118636 KB	Output is correct
33	Correct	247 ms	118636 KB	Output is correct
34	Correct	252 ms	118764 KB	Output is correct
35	Correct	256 ms	118636 KB	Output is correct
36	Correct	250 ms	118636 KB	Output is correct
37	Correct	254 ms	118636 KB	Output is correct
38	Correct	249 ms	118636 KB	Output is correct
39	Correct	245 ms	118636 KB	Output is correct
40	Correct	253 ms	118764 KB	Output is correct
41	Correct	602 ms	118892 KB	Output is correct
42	Correct	599 ms	118736 KB	Output is correct
43	Correct	610 ms	118684 KB	Output is correct
44	Correct	635 ms	118764 KB	Output is correct
45	Correct	593 ms	118636 KB	Output is correct
46	Correct	608 ms	118764 KB	Output is correct
47	Correct	610 ms	118636 KB	Output is correct
48	Correct	616 ms	118764 KB	Output is correct
49	Correct	600 ms	118892 KB	Output is correct
50	Correct	618 ms	118764 KB	Output is correct
51	Correct	595 ms	118636 KB	Output is correct
52	Correct	619 ms	118664 KB	Output is correct
53	Correct	620 ms	118784 KB	Output is correct
54	Correct	595 ms	118764 KB	Output is correct
55	Correct	596 ms	118784 KB	Output is correct

Submission #379801

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