oj.uz

답안 #1014797

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1014797 2024-07-05T14:36:04 Z alexdd Bitaro's travel (JOI23_travel) C++17
15 / 100
 3000 ms 6112 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
    {
        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

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 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 1 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 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 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 1 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 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 16 ms 5976 KB Output is correct
18 Correct 159 ms 5980 KB Output is correct
19 Correct 18 ms 5980 KB Output is correct
20 Correct 20 ms 6008 KB Output is correct
21 Correct 436 ms 5916 KB Output is correct
22 Correct 56 ms 5972 KB Output is correct
23 Correct 17 ms 6112 KB Output is correct
24 Correct 506 ms 6112 KB Output is correct
25 Correct 203 ms 6108 KB Output is correct
26 Correct 244 ms 5972 KB Output is correct
27 Correct 293 ms 6104 KB Output is correct
28 Correct 301 ms 6108 KB Output is correct
29 Correct 270 ms 5928 KB Output is correct
30 Correct 268 ms 5980 KB Output is correct
31 Correct 261 ms 5980 KB Output is correct

Subtask #3
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Execution timed out 3096 ms 5980 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 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 1 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 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 16 ms 5976 KB Output is correct
18 Correct 159 ms 5980 KB Output is correct
19 Correct 18 ms 5980 KB Output is correct
20 Correct 20 ms 6008 KB Output is correct
21 Correct 436 ms 5916 KB Output is correct
22 Correct 56 ms 5972 KB Output is correct
23 Correct 17 ms 6112 KB Output is correct
24 Correct 506 ms 6112 KB Output is correct
25 Correct 203 ms 6108 KB Output is correct
26 Correct 244 ms 5972 KB Output is correct
27 Correct 293 ms 6104 KB Output is correct
28 Correct 301 ms 6108 KB Output is correct
29 Correct 270 ms 5928 KB Output is correct
30 Correct 268 ms 5980 KB Output is correct
31 Correct 261 ms 5980 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Execution timed out 3096 ms 5980 KB Time limit exceeded
39 Halted 0 ms 0 KB -