Submission #335030

#	Time	Username	Problem	Language	Result	Execution time	Memory
335030		ivan_tudor	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	100 / 100	1860 ms	96620 KiB

sortbooks

#include<bits/stdc++.h>
using namespace std;
const int N =  1e6 + 5;
int aint[4*N];
void build(int nod,int l,int r){
  if(l == r){
    aint[nod] = INT_MIN;
    return;
  }
  int mid = (l + r)/2;
  build(2*nod, l, mid);
  build(2*nod + 1, mid+1, r);
  aint[nod] = INT_MIN;
}
void update(int nod, int l, int r, int upoz,int val){
  if(upoz < l || upoz > r)
    return;
  if(l == r){
    aint[nod] = val;
    return;
  }
  int mid = (l + r)/2;
  update(2*nod, l, mid, upoz, val);
  update(2*nod + 1, mid+1, r, upoz, val);
  aint[nod] = max(aint[2*nod], aint[2*nod + 1]);
}
int query(int nod,int l,int r, int ql, int qr){
  if(r < ql || l > qr)
    return INT_MIN;
  if(ql <=l && r <= qr)
    return aint[nod];
  int mid = (l + r)/2;
  int ls = query(2*nod, l, mid, ql, qr);
  int rs = query(2*nod + 1, mid+1, r, ql, qr);
  return max(ls, rs);
}
struct qry{
  int poz, w;
  int id;
};
int v[N];
int ans[N];
vector<qry> qu[N];
int st[N];
int main()
{
  //freopen(".in","r",stdin);
  ios::sync_with_stdio(false);
  cin.tie(0),cout.tie(0);
  int n, q;
  cin>>n>>q;
  for(int i=1;i<=n;i++){
    cin>>v[i];
  }
  build(1, 1, n);
  for(int i = 1; i<=q;i ++){
    int l, r, w;
    cin>>l>>r>>w;
    qu[r].push_back({l, w, i});
  }
  int vf =0;
  for(int i=1;i<=n;i++){
    while(vf > 0 && v[st[vf]] <= v[i])
      vf--;
    if(vf){
      update(1, 1, n, st[vf], v[i] + v[st[vf]]);
    }
    st[++vf] = i;
    for(auto x:qu[i]){
      if(query(1, 1, n, x.poz, i) > x.w)
        ans[x.id] = 0;
      else
        ans[x.id] = 1;
    }
  }
  for(int i=1;i<=q;i++)
    cout<<ans[i]<<"\n";
  return 0;
}

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