Submission #992788

#	Time	Username	Problem	Language	Result	Execution time	Memory
992788		simona1230	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	13 / 100	1398 ms	15424 KiB

sortbooks

#include <bits/stdc++.h>

using namespace std;

void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}

long long n,m,a[1000001];

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

long long maxx[1000001][32];
long long minn[1000001][32];
long long pw[1000001];

void prec()
{
    long long x=1,y=0;
    while(x<=n)
    {
        pw[x]=y;
        //cout<<x<<" "<<pw[x]<<endl;
        if(x+1==(1<<(y+1)))
            y++;

        x++;
    }
    for(long long i=1;i<=n;i++)
        maxx[i][0]=minn[i][0]=a[i];

    for(long long j=1;j<20;j++)
    {
        for(long long i=1;i<=n;i++)
        {
            minn[i][j]=min(minn[i][j-1],minn[i+(1<<(j-1))][j-1]);
            maxx[i][j]=max(maxx[i][j-1],maxx[i+(1<<(j-1))][j-1]);
        }
    }
}

long long max_(long long l,long long r)
{
    long long len=r-l+1;
    return max(maxx[l][pw[len]],maxx[r-(1<<(pw[len]))+1][pw[len]]);
}


long long min_(long long l,long long r)
{
    long long len=r-l+1;
    return min(minn[l][pw[len]],minn[r-(1<<(pw[len]))+1][pw[len]]);
}

long long mi[1000001];
long long ma[1000001];

void solve()
{
    for(long long i=1;i<=m;i++)
    {
        long long l,r,k;
        cin>>l>>r>>k;
        long long ans=0;

        ma[l]=a[l];
        for(int j=l+1;j<=r;j++)
            ma[j]=max(ma[j-1],a[j]);

        mi[r]=a[r];
        for(int j=r-1;j>=l;j--)
            mi[j]=min(mi[j+1],a[j]);

        for(int j=l;j<=r;j++)
        {
            ans=max(ans,ma[j]-mi[j+1]);
        }
        /*for(long long j=l;j<r;j++)
        {
            //cout<<l<<" "<<j<<" "<<max_(l,j)<<" "<<j+1<<" "<<r<<" "<<min_(j+1,r)<<endl;
            ans=max(ans,max_(l,j)-min_(j+1,r));
        }*/

        if(ans<=k)cout<<1<<endl;
        else cout<<0<<endl;
    }
}

void subt3()
{
    vector<long long> v;
    for(long long i=2;i<=n;i++)
    {
        if(a[i]<a[i-1])v.push_back(i);
    }

    for(long long i=1;i<=m;i++)
    {
        long long l,r,k;
        cin>>l>>r>>k;

        if(v.size()==0)
        {
            cout<<1<<endl;
            continue;
        }

        if(v[v.size()-1]<=l||v[0]>r)
        {
            cout<<0<<endl;
            continue;
        }
        long long lf=0,rt=v.size()-1;
        bool f=0;
        while(lf<=rt)
        {
            long long mid=(lf+rt)/2;
            if(v[mid]<=l)
            {
                lf=mid+1;
            }
            else if(v[mid]>r)
            {
                rt=mid-1;
            }
            else
            {
                f=1;
                break;
            }
        }

        if(f)cout<<0<<endl;
        else cout<<1<<endl;
    }
}

int main()
{
    speed();

    read();

    if(1&&n<=5000&&m<=5000)
    {
        prec();
        solve();
        return 0;
    }

    subt3();


    return 0;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 13 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23