oj.uz

Submission #439636

# Submission time Handle Problem Language Result Execution time Memory
439636 2021-06-30T11:54:05 Z JovanB Group Photo (JOI21_ho_t3) C++17
100 / 100
 691 ms 67532 KB 
#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using ld = long double;

const int MAXN = 5000;

int mns[MAXN+5][MAXN+5];
int dp[MAXN+5];
int a[MAXN+5];
int pos[MAXN+5];


struct BIT{
    int n;
    int bit[MAXN+5];
    void add(int x){
        while(x <= n){
            bit[x]++;
            x += x & -x;
        }
    }
    int get(int x){
        int res = 0;
        while(x){
            res += bit[x];
            x -= x & -x;
        }
        return res;
    }
};

int main(){
    ios_base::sync_with_stdio(false), cin.tie(0);
    cout.precision(10);
    cout << fixed;

    int n;
    cin >> n;
    BIT bitpre;
    bitpre.n = n;
    for(int i=1; i<=n; i++){
        cin >> a[i];
        pos[a[i]] = i;
    }
    for(int l=1; l<=n; l++){
        BIT bit;
        bit.n = n;
        for(int i=1; i<=n; i++) bit.bit[i] = 0;
        for(int r=l; r<=n; r++){
            mns[l][r] = mns[l][r-1];
            mns[l][r] += bitpre.get(n) - bitpre.get(pos[r]);
            mns[l][r] += bit.get(pos[r] - 1);
            bit.add(pos[r]);
        }
        bitpre.add(pos[l]);
    }
    for(int i=1; i<=n; i++){
        dp[i] = n*n;
        for(int j=i; j>=1; j--){
            dp[i] = min(dp[i], dp[j-1] + mns[j][i]);
        }
    }
    cout << dp[n] << "\n";
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 360 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 356 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 360 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 356 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 336 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 360 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 356 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 2 ms 1232 KB Output is correct
22 Correct 2 ms 1232 KB Output is correct
23 Correct 2 ms 1232 KB Output is correct
24 Correct 2 ms 1232 KB Output is correct
25 Correct 2 ms 1124 KB Output is correct
26 Correct 2 ms 1228 KB Output is correct
27 Correct 2 ms 1228 KB Output is correct
28 Correct 2 ms 1128 KB Output is correct
29 Correct 2 ms 1228 KB Output is correct
30 Correct 2 ms 1228 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 360 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 356 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 2 ms 1232 KB Output is correct
22 Correct 2 ms 1232 KB Output is correct
23 Correct 2 ms 1232 KB Output is correct
24 Correct 2 ms 1232 KB Output is correct
25 Correct 2 ms 1124 KB Output is correct
26 Correct 2 ms 1228 KB Output is correct
27 Correct 2 ms 1228 KB Output is correct
28 Correct 2 ms 1128 KB Output is correct
29 Correct 2 ms 1228 KB Output is correct
30 Correct 2 ms 1228 KB Output is correct
31 Correct 13 ms 4812 KB Output is correct
32 Correct 14 ms 4856 KB Output is correct
33 Correct 13 ms 4836 KB Output is correct
34 Correct 13 ms 4856 KB Output is correct
35 Correct 13 ms 4812 KB Output is correct
36 Correct 14 ms 4764 KB Output is correct
37 Correct 13 ms 4812 KB Output is correct
38 Correct 14 ms 4772 KB Output is correct
39 Correct 13 ms 4752 KB Output is correct
40 Correct 13 ms 4764 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 360 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 356 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 2 ms 1232 KB Output is correct
22 Correct 2 ms 1232 KB Output is correct
23 Correct 2 ms 1232 KB Output is correct
24 Correct 2 ms 1232 KB Output is correct
25 Correct 2 ms 1124 KB Output is correct
26 Correct 2 ms 1228 KB Output is correct
27 Correct 2 ms 1228 KB Output is correct
28 Correct 2 ms 1128 KB Output is correct
29 Correct 2 ms 1228 KB Output is correct
30 Correct 2 ms 1228 KB Output is correct
31 Correct 13 ms 4812 KB Output is correct
32 Correct 14 ms 4856 KB Output is correct
33 Correct 13 ms 4836 KB Output is correct
34 Correct 13 ms 4856 KB Output is correct
35 Correct 13 ms 4812 KB Output is correct
36 Correct 14 ms 4764 KB Output is correct
37 Correct 13 ms 4812 KB Output is correct
38 Correct 14 ms 4772 KB Output is correct
39 Correct 13 ms 4752 KB Output is correct
40 Correct 13 ms 4764 KB Output is correct
41 Correct 688 ms 67336 KB Output is correct
42 Correct 677 ms 67448 KB Output is correct
43 Correct 672 ms 67392 KB Output is correct
44 Correct 676 ms 67396 KB Output is correct
45 Correct 686 ms 67452 KB Output is correct
46 Correct 679 ms 67420 KB Output is correct
47 Correct 664 ms 67392 KB Output is correct
48 Correct 666 ms 67396 KB Output is correct
49 Correct 676 ms 67300 KB Output is correct
50 Correct 659 ms 67324 KB Output is correct
51 Correct 677 ms 67532 KB Output is correct
52 Correct 691 ms 67400 KB Output is correct
53 Correct 691 ms 67420 KB Output is correct
54 Correct 664 ms 67320 KB Output is correct
55 Correct 668 ms 67324 KB Output is correct