Submission #151538

#	Time	Username	Problem	Language	Result	Execution time	Memory
151538		andrew	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	64 / 100	3023 ms	29804 KiB

sortbooks

#include <bits/stdc++.h>

#pragma GCC optimize("-O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")

#define fi first
#define se second
#define p_b push_back
#define pll pair<ll,ll>
#define pii pair<int,int>
#define m_p make_pair
#define all(x) x.begin(),x.end()
#define sqr(x) (x)*(x)
#define pw(x) (1ll << x)

using namespace std;
typedef int ll;
typedef long double ld;
const ll MAXN = 1123456;
const ll N = 1e6 + 5;
mt19937_64 rnd(chrono::system_clock::now().time_since_epoch().count());

template <typename T> void vout(T s){cout << s << endl;exit(0);}
vector<pair<ll, ll> > v;
pair<pair<ll, ll>, ll> b[N];
vector<ll> q;
ll t[4 * N],a[N],n,Q,limit,l,r,x,k,ans[N];
void upd(ll v,ll tl,ll tr,ll pos,ll val)
{
    if(tl == tr)
    {
        t[v] = val + a[tl];
        return;
    }
    ll tm = (tl + tr) / 2;
    if(pos <= tm) upd(2 * v, tl, tm, pos, val);
    else upd(2 * v + 1, tm + 1, tr, pos, val);
    t[v] = max(t[2 * v], t[2 * v + 1]);
}
ll get(ll v,ll tl,ll tr,ll l,ll r)
{
    if(l > r) return 0;
    if(tl == l && tr == r) return t[v];
    ll tm = (tl + tr) / 2;
    return max(get(2 * v, tl, tm, l, min(r, tm)), get(2 * v + 1, tm + 1, tr, max(l, tm + 1), r));
}
void make(ll l,ll r)
{
    for(int i = r; i >= l; i--)
    {
        ll x = a[i],pos;
        while(!v.empty() && x > v.back().fi)
        {
            pos = v.back().se;
            upd(1, 1, n, pos, x);
            v.pop_back();
        }
        v.push_back({x, i});
    }
}
bool comp(ll i,ll j)
{
    return b[i].fi.fi > b[j].fi.fi;
}
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.push_back(i);
    }
    sort(all(q), comp);
    for(auto i : q)
    {
        l = b[i].fi.fi;
        r = b[i].fi.se;
        k = b[i].se;
        if(limit >= l)
        {
            make(l, limit);
            limit = l - 1;
        }
        x = get(1, 1, n, l, r);
        ans[i] = (x <= k);
    }
    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