Submission #1111641

#TimeUsernameProblemLanguageResultExecution timeMemory
1111641nikolashamiHedgehog Daniyar and Algorithms (IZhO19_sortbooks)C++17
0 / 100
2126 ms238664 KiB
#include <bits/stdc++.h> using namespace std; const int N=1e6+4; vector<int>st[4*N]; int mx[4*N],a[N],cur,ans,n,q; void build(int node=1,int tl=0,int tr=n-1){ if(tl==tr){ mx[node]=0; st[node]={a[tr]}; return; } int mid=(tl+tr)/2; build(node*2,tl,mid); build(node*2+1,mid+1,tr); st[node].resize((int)st[node*2].size()+(int)st[node*2+1].size()); merge(st[node*2].begin(),st[node*2].end(),st[node*2+1].begin(),st[node*2+1].end(),st[node].begin()); mx[node]=max(mx[node*2],mx[node*2+1]); int levi=st[node*2].back(); auto it=upper_bound(st[node*2+1].begin(),st[node*2+1].end(),levi-1); if(it!=st[node*2+1].begin()) it=prev(it); if(*it<levi) mx[node]=max(mx[node],*it+levi); } void qry(int l,int r,int node=1,int tl=0,int tr=n-1){ if(tl>=l&&tr<=r){ ans=max(ans,mx[node]); auto it=upper_bound(st[node].begin(),st[node].end(),cur-1); if(it!=st[node].begin()) it=prev(it); if(*it<cur) ans=max(ans,*it+cur); cur=max(cur,st[node].back()); return; } int mid=(tl+tr)/2; if(mid>=l)qry(l,r,2*node,tl,mid); if(mid<=r-1)qry(l,r,2*node+1,mid+1,tr); } signed main(){ ios::sync_with_stdio(0); cin.tie(0); cin>>n>>q; for(int i=0;i<n;++i) cin>>a[i]; build(); while(q--){ int l,r,k; cin>>l>>r>>k; cur=0,ans=0; qry(l,r); cout<<(ans<=k)<<'\n'; } }
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