oj.uz

Submission #1072785

# Submission time Handle Problem Language Result Execution time Memory
1072785 2024-08-24T04:49:36 Z 12345678 Tortoise (CEOI21_tortoise) C++17
18 / 100
 9 ms 1112 KB 
#include <bits/stdc++.h>

using namespace std;

const int nx=305;

int n, a[nx], l[nx], r[nx], lst=-1, dp[nx][nx], res, cnt;

int cost(int a, int b)
{
    int mn=1e9;
    if (l[a]!=-1) mn=min(mn, abs(a-l[a])+abs(b-l[a]));
    if (r[a]!=-1) mn=min(mn, abs(a-r[a])+abs(b-r[a]));
    return mn;
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n;
    for (int i=1; i<=n; i++) cin>>a[i];
    for (int i=1; i<=n; i++)
    {
        if (a[i]==-1) lst=i;
        if (a[i]==1) l[i]=lst, cnt++;
    }
    lst=-1;
    for (int i=n; i>=1; i--)
    {
        if (a[i]==-1) lst=i;
        if (a[i]==1) r[i]=lst;
    }
    for (int i=1; i<=n; i++)
    {
        if (a[i]==1)
        {
            for (int j=1; j<=n; j++) dp[i][j]=1e9;
            dp[i][1]=i-1;
            for (int j=1; j<i; j++)
            {
                if (a[j]==1)
                {
                    for (int k=1; k<=i; k++)
                    {
                        //if (i==3&&j==2&&k==2) cout<<"debug "<<dp[j][k]<<' '<<cost(j, i)<<'\n';
                        //if (i==3&&k+1==3) cout<<"j "<<j<<' '<<dp[j][k]+cost(j, i)<<' '<<2*(i-1)<<'\n';
                        if (dp[j][k]+cost(j, i)<=2*(i-1)) dp[i][k+1]=min(dp[i][k+1], dp[j][k]+cost(j, i));
                    }
                }
            }
            //cout<<"dp "<<i<<" : ";
            for (int j=1; j<=i; j++) 
            {
                //if (dp[i][j]==1e9) cout<<-1<<' ';
                //else cout<<dp[i][j]<<' ';
                if (dp[i][j]<1e9) res=max(res, j);
            }
            //cout<<'\n';
        }
    }
    cout<<cnt-res;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 464 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 464 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 468 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 360 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 464 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 464 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 468 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 360 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 3 ms 604 KB Output is correct
28 Correct 9 ms 696 KB Output is correct
29 Correct 5 ms 676 KB Output is correct
30 Correct 3 ms 600 KB Output is correct
31 Correct 4 ms 604 KB Output is correct
32 Correct 2 ms 604 KB Output is correct
33 Correct 4 ms 604 KB Output is correct
34 Correct 4 ms 600 KB Output is correct
35 Correct 3 ms 600 KB Output is correct
36 Correct 3 ms 604 KB Output is correct
37 Correct 4 ms 1112 KB Output is correct
38 Correct 3 ms 604 KB Output is correct
39 Correct 4 ms 604 KB Output is correct
40 Correct 3 ms 604 KB Output is correct
41 Correct 3 ms 600 KB Output is correct

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 464 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 464 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 468 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 360 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 3 ms 604 KB Output is correct
28 Correct 9 ms 696 KB Output is correct
29 Correct 5 ms 676 KB Output is correct
30 Correct 3 ms 600 KB Output is correct
31 Correct 4 ms 604 KB Output is correct
32 Correct 2 ms 604 KB Output is correct
33 Correct 4 ms 604 KB Output is correct
34 Correct 4 ms 600 KB Output is correct
35 Correct 3 ms 600 KB Output is correct
36 Correct 3 ms 604 KB Output is correct
37 Correct 4 ms 1112 KB Output is correct
38 Correct 3 ms 604 KB Output is correct
39 Correct 4 ms 604 KB Output is correct
40 Correct 3 ms 604 KB Output is correct
41 Correct 3 ms 600 KB Output is correct
42 Incorrect 0 ms 348 KB Output isn't correct
43 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 464 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 464 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 468 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 360 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 3 ms 604 KB Output is correct
28 Correct 9 ms 696 KB Output is correct
29 Correct 5 ms 676 KB Output is correct
30 Correct 3 ms 600 KB Output is correct
31 Correct 4 ms 604 KB Output is correct
32 Correct 2 ms 604 KB Output is correct
33 Correct 4 ms 604 KB Output is correct
34 Correct 4 ms 600 KB Output is correct
35 Correct 3 ms 600 KB Output is correct
36 Correct 3 ms 604 KB Output is correct
37 Correct 4 ms 1112 KB Output is correct
38 Correct 3 ms 604 KB Output is correct
39 Correct 4 ms 604 KB Output is correct
40 Correct 3 ms 604 KB Output is correct
41 Correct 3 ms 600 KB Output is correct
42 Incorrect 0 ms 348 KB Output isn't correct
43 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 464 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 464 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 468 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 360 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 3 ms 604 KB Output is correct
28 Correct 9 ms 696 KB Output is correct
29 Correct 5 ms 676 KB Output is correct
30 Correct 3 ms 600 KB Output is correct
31 Correct 4 ms 604 KB Output is correct
32 Correct 2 ms 604 KB Output is correct
33 Correct 4 ms 604 KB Output is correct
34 Correct 4 ms 600 KB Output is correct
35 Correct 3 ms 600 KB Output is correct
36 Correct 3 ms 604 KB Output is correct
37 Correct 4 ms 1112 KB Output is correct
38 Correct 3 ms 604 KB Output is correct
39 Correct 4 ms 604 KB Output is correct
40 Correct 3 ms 604 KB Output is correct
41 Correct 3 ms 600 KB Output is correct
42 Incorrect 0 ms 348 KB Output isn't correct
43 Halted 0 ms 0 KB -