Submission #151701

#	Time	Username	Problem	Language	Result	Execution time	Memory
151701		leatherman	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	64 / 100	3009 ms	29868 KiB

sortbooks

#include <bits/stdc++.h>

#define fi first
#define se second
#define m_p make_pair

using namespace std;
const int N = 4e6 + 200;

pair<pair<int, int>, int> b[N];
pair<int, int> v[N];
int t[4 * N],a[N],n,Q,limit,l,r,x,q[N],step,pos,val;
bool ans[N];
void upd(int v,int tl,int tr)
{
    if(tl == tr)
    {
        t[v] = val + a[tl];
        return;
    }
    int tm = (tl + tr) >> 1;
    if(pos <= tm) upd(v << 1, tl, tm);
    else upd(v << 1 | 1, tm + 1, tr);
    t[v] = max(t[v << 1], t[v << 1 | 1]);
}
int get(int v,int tl,int tr)
{
    if(tr < l || tl > r) return 0;
    if(tl >= l && tr <= r) return t[v];
    int tm = (tl + tr) >> 1;
    return max(get(v << 1, tl, tm), get(v << 1 | 1, tm + 1, tr));
}
void make(int l,int r)
{
    int x,Pos;
    for(int i = r; i >= l; i--)
    {
        x = a[i];
        while(step > 0 && x > v[step].fi)
        {
            Pos = v[step].se;
            pos = Pos;
            val = x;
            upd(1, 1, n);
            step--;
        }
        v[++step] = {x, i};
    }
}
bool comp(int i,int j)
{
    return (b[i].fi.fi > b[j].fi.fi) || (b[i].fi.fi == b[j].fi.fi && (m_p(b[i].fi.se, b[i].se) < m_p(b[j].fi.se, b[j].se)));
}
int main()
{
    ios_base::sync_with_stdio();cin.tie(0);cout.tie(0);
    cin>>n>>Q;
    for(int i = 1; i <= n; i++) cin>>a[i];
    limit = n;
    for(int i = 1; i <= Q; i++)
    {
        cin>>l>>r>>x;
        b[i] = {{l, r}, x};
        q[i] = i;
    }
    stable_sort(q + 1, q + Q + 1, comp);
    for(int i,j = 1; j <= Q; j++)
    {
        i = q[j];
        l = b[i].fi.fi;
        r = b[i].fi.se;
        if(limit >= l)
        {
            make(l, limit);
            limit = l - 1;
        }
        x = get(1, 1, n);
        ans[i] = (x <= b[i].se);
    }
    for(int i = 1; i <= Q; i++) cout<<ans[i]<<"\n";
    return 0;
}

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