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
#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
*/
# 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
# 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
# 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
# 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
# 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