oj.uz

Submission #667290

# Submission time Handle Problem Language Result Execution time Memory
667290 2022-12-01T03:59:23 Z Darren0724 Group Photo (JOI21_ho_t3) C++17
100 / 100
 845 ms 98508 KB 
#include <bits/stdc++.h>
using namespace std;
int INF=1e9;
struct BIT{
    vector<int> v;
    int n;
    BIT(int n1){
        n=n1;
        v.resize(n+1);
    }
    void add(int p,int x){
        for(int i=p;i<=n;i+=i&(-i)){
            v[i]+=x;
        }
    }
    int ask(int p){
        int ans=0;
        for(int i=p;i>0;i-=i&(-i)){
            ans+=v[i];
        }
        return ans;
    }
};
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;cin>>n;
    vector<int> pos(n+1);
    vector<vector<int>> cnt(n+2,vector<int>(n+2));
    for(int i=1;i<=n;i++){
        int k;cin>>k;
        pos[k]=i;
    }
    for(int j=1;j<=n;j++){
        BIT bit(n);
        for(int i=j+1;i<=n;i++){
            bit.add(pos[i],1);
        }
        for(int i=j;i>=1;i--){
            cnt[i][j]=cnt[i+1][j]+bit.ask(pos[i]-1);
        }
    }
    for(int i=1;i<=n;i++){
        BIT bit(n);
        int tmp=0;
        for(int j=i;j<=n;j++){
            tmp+=bit.ask(pos[j]);
            cnt[i][j]+=tmp;
            bit.add(pos[j],1);
        }
    }
    vector<int> dp(n+1,INF);
    dp[0]=0;
    for(int i=1;i<=n;i++){
        for(int j=0;j<i;j++){
            dp[i]=min(dp[i],dp[j]+cnt[j+1][i]);
        }
    }
    cout<<dp[n]<<endl;



    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 468 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 468 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 13 ms 2772 KB Output is correct
32 Correct 13 ms 2864 KB Output is correct
33 Correct 13 ms 2868 KB Output is correct
34 Correct 13 ms 2872 KB Output is correct
35 Correct 14 ms 2772 KB Output is correct
36 Correct 13 ms 2772 KB Output is correct
37 Correct 13 ms 2772 KB Output is correct
38 Correct 14 ms 2864 KB Output is correct
39 Correct 13 ms 2872 KB Output is correct
40 Correct 13 ms 2772 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 468 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 13 ms 2772 KB Output is correct
32 Correct 13 ms 2864 KB Output is correct
33 Correct 13 ms 2868 KB Output is correct
34 Correct 13 ms 2872 KB Output is correct
35 Correct 14 ms 2772 KB Output is correct
36 Correct 13 ms 2772 KB Output is correct
37 Correct 13 ms 2772 KB Output is correct
38 Correct 14 ms 2864 KB Output is correct
39 Correct 13 ms 2872 KB Output is correct
40 Correct 13 ms 2772 KB Output is correct
41 Correct 812 ms 98364 KB Output is correct
42 Correct 824 ms 98384 KB Output is correct
43 Correct 831 ms 98400 KB Output is correct
44 Correct 814 ms 98400 KB Output is correct
45 Correct 799 ms 98404 KB Output is correct
46 Correct 820 ms 98500 KB Output is correct
47 Correct 803 ms 98424 KB Output is correct
48 Correct 811 ms 98428 KB Output is correct
49 Correct 825 ms 98420 KB Output is correct
50 Correct 845 ms 98436 KB Output is correct
51 Correct 821 ms 98460 KB Output is correct
52 Correct 801 ms 98508 KB Output is correct
53 Correct 832 ms 98420 KB Output is correct
54 Correct 798 ms 98420 KB Output is correct
55 Correct 818 ms 98420 KB Output is correct