Submission #1184509

#	Time	Username	Problem	Language	Result	Execution time	Memory
1184509		zhamshid	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++20	100 / 100	1391 ms	204444 KiB

sortbooks

#include <bits/stdc++.h>
#define noSuccess t--
#define int long long
#define pb push_back 
#define F first	
#define S second
#define Sattar_is_the_best ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define all(s) s.begin(),s.end()
#define yes "YES\n"
#define no "NO\n"
#define sz size
 
using namespace std;
const int maxn = 2e6;
const int mod = 1e9 + 7;
int n,q,a[maxn],p[maxn],t[maxn];
int l[maxn],r[maxn],k[maxn];
vector<pair<int,int>>Q[maxn];
vector<int>add[maxn];
void upd(int v,int tl,int tr,int pos,int val){
  if(tl==tr){
    t[v]=val;
    return;
  }
  int mid = tl + tr >> 1;
  if(pos<=mid) upd(v+v,tl,mid,pos,val);
  else upd(v+v+1,mid+1,tr,pos,val);
  t[v]=max(t[v+v],t[v+v+1]);
}
int get(int v,int tl,int tr,int l,int r){
  if(tl>r || tr<l) return 0;
  if(l<=tl && tr<=r) return t[v];
  int mid = tl + tr >> 1;
  return max(get(v+v,tl,mid,l,r),get(v+v+1,mid+1,tr,l,r));
}
int ans[maxn];
void tryAgain(){
  cin>>n>>q;
  for(int i=1;i<=n;i++){
    cin>>a[i];
  }
  for(int i=1;i<=q;i++){
    cin>>l[i]>>r[i]>>k[i];
    Q[l[i]].pb({r[i],i});
  }
  stack<int>st;
  for(int i=1;i<=n;i++){
    while(!st.empty() && a[st.top()]<=a[i]){
      st.pop();
    }
    if(st.empty()) p[i]=0;
    else p[i]=st.top();
    // cout<<i<<' '<<p[i]<<'\n';
    st.push(i);
    add[p[i]].pb(i);
  }
  for(int L=n;L>=1;L--){
    for(auto to : add[L]){
      // cout<<L<<' '<<to<<' '<<a[L]<<' '<<a[to]<<' '<<a[L]+a[to]<<'\n';
      upd(1,1,n,to,a[L]+a[to]);
      // cout<<get(1,1,n,L,n)<<'\n';
    }
    for(auto to : Q[L]){
      // cout<<to.S<<'\n';
      // cout<<L<<' '<<to.F<<' '<<get(1,1,n,L,to.F)<<' '<<k[to.S]<<'\n';
      ans[to.S]=(get(1,1,n,L,to.F)<=k[to.S] ? 1 : 0);
    }
  }
  for(int i=1;i<=q;i++){
    cout<<ans[i]<<'\n';
  }
  // cout<<get(1,1,n,1,n);
}
signed main(){
  Sattar_is_the_best
  // freopen("length.in", "r", stdin);
  // freopen("length.out", "w", stdout);
  int t = 1;
  // cin >> t;
  while(noSuccess){
    tryAgain();
  }
}

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