oj.uz

Submission #704036

# Submission time Handle Problem Language Result Execution time Memory
704036 2023-03-01T12:31:27 Z onlk97 Group Photo (JOI21_ho_t3) C++14
100 / 100
 764 ms 98412 KB 
#include <bits/stdc++.h>
using namespace std;
struct bit{
    int b[5010];
    void cl(){
        for (int i=0; i<5010; i++) b[i]=0;
    }
    void update(int pos,int val){
        for (int i=pos; i<5010; i+=i&(-i)) b[i]+=val;
    }
    int query(int pos){
        int ans=0;
        for (int i=pos; i; i-=i&(-i)) ans+=b[i];
        return ans;
    }
};
signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
    int n; cin>>n;
    int a[n+1];
    for (int i=1; i<=n; i++) cin>>a[i];
    int pos[n+1];
    for (int i=1; i<=n; i++) pos[a[i]]=i;
    int cost[n+1][n+1];
    bit out,in;
    for (int i=1; i<=n; i++){
        out.cl(); in.cl();
        for (int j=i+1; j<=n; j++) out.update(pos[j],1);
        int cnt=0;
        for (int j=i; j>0; j--){
            cnt+=out.query(pos[j]);
            cnt+=in.query(n+1-pos[j]);
            in.update(n+1-pos[j],1);
            cost[j][i]=cnt;
        }
    }
    int dp[n+1];
    dp[0]=0;
    for (int i=1; i<=n; i++) dp[i]=1e9;
    for (int i=1; i<=n; i++){
        for (int j=0; j<i; j++) dp[i]=min(dp[i],dp[j]+cost[j+1][i]);
    }
    cout<<dp[n]<<'\n';
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 356 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 356 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 352 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 356 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 352 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 2 ms 468 KB Output is correct
22 Correct 2 ms 480 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 2 ms 480 KB Output is correct
25 Correct 1 ms 480 KB Output is correct
26 Correct 2 ms 468 KB Output is correct
27 Correct 2 ms 488 KB Output is correct
28 Correct 2 ms 480 KB Output is correct
29 Correct 2 ms 468 KB Output is correct
30 Correct 2 ms 468 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 356 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 352 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 2 ms 468 KB Output is correct
22 Correct 2 ms 480 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 2 ms 480 KB Output is correct
25 Correct 1 ms 480 KB Output is correct
26 Correct 2 ms 468 KB Output is correct
27 Correct 2 ms 488 KB Output is correct
28 Correct 2 ms 480 KB Output is correct
29 Correct 2 ms 468 KB Output is correct
30 Correct 2 ms 468 KB Output is correct
31 Correct 16 ms 2864 KB Output is correct
32 Correct 18 ms 2872 KB Output is correct
33 Correct 19 ms 2772 KB Output is correct
34 Correct 17 ms 2880 KB Output is correct
35 Correct 18 ms 2864 KB Output is correct
36 Correct 16 ms 2880 KB Output is correct
37 Correct 17 ms 2772 KB Output is correct
38 Correct 17 ms 2880 KB Output is correct
39 Correct 17 ms 2772 KB Output is correct
40 Correct 17 ms 2772 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 356 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 352 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 2 ms 468 KB Output is correct
22 Correct 2 ms 480 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 2 ms 480 KB Output is correct
25 Correct 1 ms 480 KB Output is correct
26 Correct 2 ms 468 KB Output is correct
27 Correct 2 ms 488 KB Output is correct
28 Correct 2 ms 480 KB Output is correct
29 Correct 2 ms 468 KB Output is correct
30 Correct 2 ms 468 KB Output is correct
31 Correct 16 ms 2864 KB Output is correct
32 Correct 18 ms 2872 KB Output is correct
33 Correct 19 ms 2772 KB Output is correct
34 Correct 17 ms 2880 KB Output is correct
35 Correct 18 ms 2864 KB Output is correct
36 Correct 16 ms 2880 KB Output is correct
37 Correct 17 ms 2772 KB Output is correct
38 Correct 17 ms 2880 KB Output is correct
39 Correct 17 ms 2772 KB Output is correct
40 Correct 17 ms 2772 KB Output is correct
41 Correct 737 ms 98296 KB Output is correct
42 Correct 739 ms 98204 KB Output is correct
43 Correct 729 ms 98272 KB Output is correct
44 Correct 732 ms 98244 KB Output is correct
45 Correct 735 ms 98244 KB Output is correct
46 Correct 725 ms 98380 KB Output is correct
47 Correct 764 ms 98300 KB Output is correct
48 Correct 747 ms 98304 KB Output is correct
49 Correct 739 ms 98380 KB Output is correct
50 Correct 741 ms 98304 KB Output is correct
51 Correct 751 ms 98364 KB Output is correct
52 Correct 751 ms 98412 KB Output is correct
53 Correct 734 ms 98292 KB Output is correct
54 Correct 743 ms 98284 KB Output is correct
55 Correct 736 ms 98396 KB Output is correct