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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#137895#6343. Bitaro's travelRafi22#0 208ms62500kbC++143.3kb2023-08-10 18:43:582024-07-04 01:32:05

Judging History

你现在查看的是最新测评结果

  • [2024-07-04 01:32:05]
  • 评测
  • 测评结果:0
  • 用时:208ms
  • 内存:62500kb
  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-08-10 18:43:58]
  • 提交

answer

#include <bits/stdc++.h>

#define int long long
#define ll long long
#define ld long double
//#define endl '\n'
#define st first
#define nd second
#define pb push_back
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()
using namespace std;
int inf=1000000000000000007;
int mod=1000000007;
int mod1=998244353;

const int N=200007,L=18;

int mn[N][L];
int mx[N][L];
int lg[N];

int get_mn(int l,int r)
{
    int k=lg[r-l+1];
    return min(mn[l][k],mn[r-(1<<k)+1][k]);
}
int get_mx(int l,int r)
{
    int k=lg[r-l+1];
    return max(mx[l][k],mx[r-(1<<k)+1][k]);
}

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin>>n;
    vector<int>a(n+2);
    a[0]=-inf;
    for(int i=1;i<=n;i++) cin>>a[i];
    a[n+1]=inf;
    for(int i=1;i<=n+1;i++)
    {
        mn[i][0]=2*a[i-1]-a[i];
        mx[i][0]=2*a[i]-a[i-1];
    }
    for(int j=1;j<L;j++)
    {
        for(int i=1;i+(1<<j)-1<=n+1;i++)
        {
            mn[i][j]=min(mn[i][j-1],mn[i+(1<<(j-1))][j-1]);
            mx[i][j]=max(mx[i][j-1],mx[i+(1<<(j-1))][j-1]);
        }
    }
    for(int i=2;i<=n+1;i++) lg[i]=lg[i/2]+1;
    int q;
    cin>>q;
    while(q--)
    {
        int x,ans=0;
        cin>>x;
        int l=lower_bound(all(a),x)-a.begin();
        ans+=min(a[l]-x,x-a[l-1]);
        if(a[l]-x>=x-a[l-1]) l--;
        int r=l;
        bool side=0;
        while(l>1||r<n)
        {
            if(l==1)
            {
                if(side) ans+=a[n]-a[r];
                else ans+=a[n]-a[l];
                break;
            }
            if(r==n)
            {
                if(side) ans+=a[r]-a[1];
                else ans+=a[l]-a[1];
                break;
            }
            if(side)
            {
                int L=r+1,R=n+1,sr,i;
                while(L<=R)
                {
                    sr=(L+R)/2;
                    if(get_mn(r+1,sr)<=a[l-1])
                    {
                        i=sr;
                        R=sr-1;
                    }
                    else L=sr+1;
                }
               /* for(int i=r+1;i<=n+1;i++)
                {
                    if(2*a[i-1]-a[i]<=a[l-1])
                    {
                        break;
                    }
                }*/
                ans+=a[i-1]-a[r];
                ans+=a[i-1]-a[l-1];
                r=i-1;
                l--;
            }
            else
            {
                int L=0,R=l-1,sr,i;
                while(L<=R)
                {
                    sr=(L+R)/2;
                    if(get_mx(L+1,l)>a[r+1])
                    {
                        i=sr;
                        L=sr+1;
                    }
                    else R=sr-1;
                }
               /* for(int i=l-1;i>=0;i--)
                {
                    if(2*a[i+1]-a[i]>a[r+1])
                    {

                        break;
                    }
                }*/
                ans+=a[l]-a[i+1];
                ans+=a[r+1]-a[i+1];
                l=i+1;
                r++;
            }
            side^=1;
        }
        cout<<ans<<endl;
    }


    return 0;
}
/*
5
0 5 6 7 9
1
7
*/



Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 0
Wrong Answer
time: 1ms
memory: 7680kb

input:

2000
154914587 154914588 154914591 154914592 154914594 154914596 154914598 154914599 154914601 154914603 154914608 154914610 154914612 154914615 154914618 154914619 154914621 154914622 154914626 154914627 154914631 154914633 154914636 154914638 154914640 154914641 154914642 154914644 154914645 15491...

output:

1619812619

result:

wrong answer 1st numbers differ - expected: '809906250', found: '1619812619'

Subtask #2:

score: 0
Skipped

Dependency #1:

0%

Subtask #3:

score: 0
Wrong Answer

Test #31:

score: 0
Wrong Answer
time: 208ms
memory: 62500kb

input:

200000
9 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181...

output:

200107
999999991
202154
400098
379455
400098
400098
381369
400098
265794
363817
400097
342292
260613
302587
400097
400098
281789
345769
400097
218270
400098
400098
400097
400097
332977
400097
224651
400098
259560
206246
231269
400097
371811
400098
382486
202443
400098
359464
400098
354417
400098
400...

result:

wrong answer 4th numbers differ - expected: '346046', found: '400098'

Subtask #4:

score: 0
Skipped

Dependency #1:

0%