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Submission #993706

# Submission time Handle Problem Language Result Execution time Memory
993706 2024-06-06T10:29:32 Z simona1230 Tortoise (CEOI21_tortoise) C++17
0 / 100
 1 ms 2392 KB 
#include <bits/stdc++.h>

using namespace std;

void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
int n,a[1001];

void read()
{
    cin>>n;
    for(int i=1;i<=n;i++)
        cin>>a[i];
}

int dp[1001][3001];
void solve()
{
    for(int i=0;i<=n;i++)
    {
        for(int j=0;j<=2*n;j++)
        {
            dp[i][j]=-1e9;
        }
    }

    int sum=0;
    for(int i=1;i<=n;i++)
    {
        if(a[i]==1)dp[i][i]=1,sum++;
    }

    int ans=0;
    dp[0][0]=0;
    for(int i=1;i<=n;i++)
    {
        for(int j=i;j<=2*i;j++)
        {
            for(int pr=1;pr<i;pr++)
            {
                if(a[pr]!=1)continue;

                for(int d=1;d<=n;d++)
                {
                    if(a[d]!=-1)continue;

                    int f=j-(abs(d-i)+abs(d-pr));
                    if(f>=0)dp[i][j]=max(dp[i][j],dp[pr][f]+1);
                }
            }

            //cout<<i<<" "<<j<<" "<<dp[i][j]<<endl;
            ans=max(ans,dp[i][j]);
        }
    }

    cout<<sum-ans<<endl;
}

int main()
{
    speed();
    read();
    solve();
    return 0;
}

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 2392 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 2392 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 2392 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 2392 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 2392 KB Output isn't correct
2 Halted 0 ms 0 KB -