oj.uz

Submission #553839

# Submission time Handle Problem Language Result Execution time Memory
553839 2022-04-27T07:19:18 Z andrei_boaca Group Photo (JOI21_ho_t3) C++17
100 / 100
 990 ms 67832 KB 
#include <bits/stdc++.h>
//#pragma GCC optimize("fast-math")
using namespace std;
typedef long long ll;
int v[5005],n,dp[5005],nrinv[5005][5005],poz[5005],aib[5005],curpoz[5005];
int lsb(int x)
{
    return x&(-x);
}
void update(int poz,int val)
{
    for(int i=poz;i<=n;i+=lsb(i))
        aib[i]+=val;
}
int suma(int poz)
{
    int rez=0;
    for(int i=poz;i>=1;i-=lsb(i))
        rez+=aib[i];
    return rez;
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>v[i];
        poz[v[i]]=i;
    }
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=n;j++)
            aib[j]=0;
        int inv=0;
        for(int j=i;j<=n;j++)
        {
            int p=poz[j];
            inv+=suma(p);
            update(p,+1);
            nrinv[i][j]=inv;
        }
    }
    for(int k=n;k>=1;k--)
    {
        if(k==n)
        {
            dp[k]=0;
            continue;
        }
        /*vector<int> p;
        for(int i=1;i<=n;i++)
            if(v[i]<=k)
                p.push_back(v[i]);*/
        for(int i=1;i<=n;i++)
            aib[i]=0;
        int lg=0;
        for(int i=1;i<=n;i++)
            if(v[i]>=k)
            {
                lg++;
                curpoz[v[i]]=lg;
                update(lg,+1);
            }
        dp[k]=2e9;
        int need=0;
        for(int i=n;i>=k;i--)
        {
            int val=need+nrinv[k][i]+dp[i+1];
            dp[k]=min(dp[k],val);
            int st=suma(curpoz[i]-1);
            st=curpoz[i]-1-st;
            need-=st;
            int dr=suma(lg)-suma(curpoz[i]);
            need+=dr;
            update(curpoz[i],-1);
        }
    }
    cout<<dp[1];
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 352 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 352 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 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 0 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 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 0 ms 340 KB Output is correct
2 Correct 0 ms 352 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 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 0 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 3 ms 1108 KB Output is correct
22 Correct 2 ms 1108 KB Output is correct
23 Correct 2 ms 1108 KB Output is correct
24 Correct 2 ms 1108 KB Output is correct
25 Correct 2 ms 1108 KB Output is correct
26 Correct 2 ms 1108 KB Output is correct
27 Correct 2 ms 1108 KB Output is correct
28 Correct 2 ms 1108 KB Output is correct
29 Correct 2 ms 1224 KB Output is correct
30 Correct 2 ms 1108 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 352 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 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 0 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 3 ms 1108 KB Output is correct
22 Correct 2 ms 1108 KB Output is correct
23 Correct 2 ms 1108 KB Output is correct
24 Correct 2 ms 1108 KB Output is correct
25 Correct 2 ms 1108 KB Output is correct
26 Correct 2 ms 1108 KB Output is correct
27 Correct 2 ms 1108 KB Output is correct
28 Correct 2 ms 1108 KB Output is correct
29 Correct 2 ms 1224 KB Output is correct
30 Correct 2 ms 1108 KB Output is correct
31 Correct 24 ms 4820 KB Output is correct
32 Correct 23 ms 4836 KB Output is correct
33 Correct 23 ms 4828 KB Output is correct
34 Correct 21 ms 4836 KB Output is correct
35 Correct 23 ms 4836 KB Output is correct
36 Correct 22 ms 4820 KB Output is correct
37 Correct 22 ms 4820 KB Output is correct
38 Correct 22 ms 4840 KB Output is correct
39 Correct 22 ms 4820 KB Output is correct
40 Correct 22 ms 4784 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 352 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 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 0 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 3 ms 1108 KB Output is correct
22 Correct 2 ms 1108 KB Output is correct
23 Correct 2 ms 1108 KB Output is correct
24 Correct 2 ms 1108 KB Output is correct
25 Correct 2 ms 1108 KB Output is correct
26 Correct 2 ms 1108 KB Output is correct
27 Correct 2 ms 1108 KB Output is correct
28 Correct 2 ms 1108 KB Output is correct
29 Correct 2 ms 1224 KB Output is correct
30 Correct 2 ms 1108 KB Output is correct
31 Correct 24 ms 4820 KB Output is correct
32 Correct 23 ms 4836 KB Output is correct
33 Correct 23 ms 4828 KB Output is correct
34 Correct 21 ms 4836 KB Output is correct
35 Correct 23 ms 4836 KB Output is correct
36 Correct 22 ms 4820 KB Output is correct
37 Correct 22 ms 4820 KB Output is correct
38 Correct 22 ms 4840 KB Output is correct
39 Correct 22 ms 4820 KB Output is correct
40 Correct 22 ms 4784 KB Output is correct
41 Correct 989 ms 67348 KB Output is correct
42 Correct 974 ms 67380 KB Output is correct
43 Correct 981 ms 67472 KB Output is correct
44 Correct 974 ms 67532 KB Output is correct
45 Correct 990 ms 67464 KB Output is correct
46 Correct 986 ms 67492 KB Output is correct
47 Correct 990 ms 67488 KB Output is correct
48 Correct 976 ms 67632 KB Output is correct
49 Correct 984 ms 67508 KB Output is correct
50 Correct 976 ms 67532 KB Output is correct
51 Correct 984 ms 67832 KB Output is correct
52 Correct 974 ms 67512 KB Output is correct
53 Correct 962 ms 67464 KB Output is correct
54 Correct 986 ms 67388 KB Output is correct
55 Correct 969 ms 67552 KB Output is correct