oj.uz

Submission #667288

# Submission time Handle Problem Language Result Execution time Memory
667288 2022-12-01T03:58:07 Z Darren0724 Group Photo (JOI21_ho_t3) C++17
100 / 100
 891 ms 196488 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) x.begin(),x.end()
#define pii pair<int,int>
#define mp make_pair
const int INF=1e18;
const int mod=1e9+7;
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;
    }
};
signed 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 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 320 KB Output is correct
8 Correct 0 ms 316 KB Output is correct
9 Correct 0 ms 212 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 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 320 KB Output is correct
8 Correct 0 ms 316 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 320 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 0 ms 320 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 320 KB Output is correct
8 Correct 0 ms 316 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 320 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 0 ms 320 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 596 KB Output is correct
22 Correct 1 ms 584 KB Output is correct
23 Correct 1 ms 596 KB Output is correct
24 Correct 2 ms 596 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Correct 1 ms 576 KB Output is correct
27 Correct 1 ms 580 KB Output is correct
28 Correct 1 ms 596 KB Output is correct
29 Correct 1 ms 596 KB Output is correct
30 Correct 1 ms 596 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 320 KB Output is correct
8 Correct 0 ms 316 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 320 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 0 ms 320 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 596 KB Output is correct
22 Correct 1 ms 584 KB Output is correct
23 Correct 1 ms 596 KB Output is correct
24 Correct 2 ms 596 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Correct 1 ms 576 KB Output is correct
27 Correct 1 ms 580 KB Output is correct
28 Correct 1 ms 596 KB Output is correct
29 Correct 1 ms 596 KB Output is correct
30 Correct 1 ms 596 KB Output is correct
31 Correct 14 ms 5332 KB Output is correct
32 Correct 17 ms 5332 KB Output is correct
33 Correct 15 ms 5384 KB Output is correct
34 Correct 15 ms 5332 KB Output is correct
35 Correct 15 ms 5404 KB Output is correct
36 Correct 16 ms 5332 KB Output is correct
37 Correct 15 ms 5332 KB Output is correct
38 Correct 15 ms 5332 KB Output is correct
39 Correct 15 ms 5380 KB Output is correct
40 Correct 15 ms 5332 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 320 KB Output is correct
8 Correct 0 ms 316 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 320 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 0 ms 320 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 596 KB Output is correct
22 Correct 1 ms 584 KB Output is correct
23 Correct 1 ms 596 KB Output is correct
24 Correct 2 ms 596 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Correct 1 ms 576 KB Output is correct
27 Correct 1 ms 580 KB Output is correct
28 Correct 1 ms 596 KB Output is correct
29 Correct 1 ms 596 KB Output is correct
30 Correct 1 ms 596 KB Output is correct
31 Correct 14 ms 5332 KB Output is correct
32 Correct 17 ms 5332 KB Output is correct
33 Correct 15 ms 5384 KB Output is correct
34 Correct 15 ms 5332 KB Output is correct
35 Correct 15 ms 5404 KB Output is correct
36 Correct 16 ms 5332 KB Output is correct
37 Correct 15 ms 5332 KB Output is correct
38 Correct 15 ms 5332 KB Output is correct
39 Correct 15 ms 5380 KB Output is correct
40 Correct 15 ms 5332 KB Output is correct
41 Correct 874 ms 196200 KB Output is correct
42 Correct 840 ms 196284 KB Output is correct
43 Correct 883 ms 196324 KB Output is correct
44 Correct 850 ms 196332 KB Output is correct
45 Correct 864 ms 196332 KB Output is correct
46 Correct 889 ms 196428 KB Output is correct
47 Correct 854 ms 196488 KB Output is correct
48 Correct 874 ms 196444 KB Output is correct
49 Correct 840 ms 196452 KB Output is correct
50 Correct 856 ms 196448 KB Output is correct
51 Correct 859 ms 196456 KB Output is correct
52 Correct 845 ms 196448 KB Output is correct
53 Correct 840 ms 196432 KB Output is correct
54 Correct 857 ms 196448 KB Output is correct
55 Correct 891 ms 196448 KB Output is correct