oj.uz

Submission #1014795

# Submission time Handle Problem Language Result Execution time Memory
1014795 2024-07-05T14:35:40 Z alexdd Bitaro's travel (JOI23_travel) C++17
15 / 100
 3000 ms 8028 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long
int n;
int a[200005];
int aint[530005];
void build(int nod, int st, int dr)
{
    if(st==dr)
    {
        aint[nod] = 2*a[st]-a[st-1];
        return;
    }
    int mij=(st+dr)/2;
    build(nod*2,st,mij);
    build(nod*2+1,mij+1,dr);
    aint[nod] = max(aint[nod*2], aint[nod*2+1]);
}
int qry(int nod, int st, int dr, int le, int ri)
{
    if(le>ri)
        return -1;
    if(le==st && dr==ri)
        return aint[nod];
    int mij=(st+dr)/2;
    return max(qry(nod*2,st,mij,le,min(mij,ri)),
               qry(nod*2+1,mij+1,dr,max(mij+1,le),ri));
}

int solve(int le, int ri, int poz)
{
    if(le==1 && ri==n)
        return 0;
    if(le>1 && (ri==n || poz-a[le-1] <= a[ri+1]-poz))///merge spre stanga
    {
        return solve(le-1,ri,a[le-1]) + poz-a[le-1];
        int st=2,dr=le,ans=le;
        while(st<=dr)
        {
            int mij=(st+dr)/2;
            if(qry(1,1,n,mij,le) <= a[ri+1])
            {
                ans=mij;
                dr=mij-1;
            }
            else
                st=mij+1;
        }
        return solve(ans-1,ri,a[ans-1]) + poz-a[ans-1];
    }
    else///merge spre dreapta
    {
        return solve(le,ri+1,a[ri+1]) + a[ri+1]-poz;
    }
}
///a[x]-a[x-1] <= a[ri]-a[x]
///2*a[x]-a[x-1] <= a[ri]
signed main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
    }
    build(1,1,n);
    int q,s;
    cin>>q;
    while(q--)
    {
        cin>>s;
        if(s<=a[1])
            cout<<solve(1,1,a[1])+(a[1]-s)<<"\n";
        else if(s>=a[n])
            cout<<solve(n,n,a[n])+(s-a[n])<<"\n";
        else
        {
            int st=1,dr=n-1,ans=n;
            while(st<=dr)
            {
                int mij=(st+dr)/2;
                if(a[mij]>=s)
                {
                    ans=mij;
                    dr=mij-1;
                }
                else
                    st=mij+1;
            }
            if(ans==1 || a[ans]-s < s-a[ans-1]) cout<<solve(ans,ans,a[ans])+(a[ans]-s)<<"\n";
            else cout<<solve(ans-1,ans-1,a[ans-1])+(s-a[ans-1])<<"\n";
        }
    }
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 476 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 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 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 476 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 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 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 18 ms 8024 KB Output is correct
18 Correct 18 ms 8016 KB Output is correct
19 Correct 18 ms 8016 KB Output is correct
20 Correct 17 ms 8024 KB Output is correct
21 Correct 24 ms 8024 KB Output is correct
22 Correct 17 ms 8024 KB Output is correct
23 Correct 17 ms 8000 KB Output is correct
24 Correct 17 ms 8028 KB Output is correct
25 Correct 24 ms 7908 KB Output is correct
26 Correct 22 ms 8020 KB Output is correct
27 Correct 17 ms 8028 KB Output is correct
28 Correct 17 ms 7992 KB Output is correct
29 Correct 17 ms 7772 KB Output is correct
30 Correct 17 ms 7912 KB Output is correct
31 Correct 18 ms 7920 KB Output is correct

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 464 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 464 KB Output is correct
7 Execution timed out 3045 ms 7640 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 476 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 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 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 18 ms 8024 KB Output is correct
18 Correct 18 ms 8016 KB Output is correct
19 Correct 18 ms 8016 KB Output is correct
20 Correct 17 ms 8024 KB Output is correct
21 Correct 24 ms 8024 KB Output is correct
22 Correct 17 ms 8024 KB Output is correct
23 Correct 17 ms 8000 KB Output is correct
24 Correct 17 ms 8028 KB Output is correct
25 Correct 24 ms 7908 KB Output is correct
26 Correct 22 ms 8020 KB Output is correct
27 Correct 17 ms 8028 KB Output is correct
28 Correct 17 ms 7992 KB Output is correct
29 Correct 17 ms 7772 KB Output is correct
30 Correct 17 ms 7912 KB Output is correct
31 Correct 18 ms 7920 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 464 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 464 KB Output is correct
38 Execution timed out 3045 ms 7640 KB Time limit exceeded
39 Halted 0 ms 0 KB -