답안 #553839

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
553839	2022-04-27T07:19:18 Z	andrei_boaca	Group Photo (JOI21_ho_t3)	C++17	100 / 100	990 ms	67832 KB

Main

#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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

답안 #553839

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 7.0 / 7.0

Subtask #3 32.0 / 32.0

Subtask #4 20.0 / 20.0

Subtask #5 36.0 / 36.0

Subtask #1
5.0 / 5.0

Subtask #2
7.0 / 7.0

Subtask #3
32.0 / 32.0

Subtask #4
20.0 / 20.0

Subtask #5
36.0 / 36.0