Submission #1122174

#TimeUsernameProblemLanguageResultExecution timeMemory
1122174LuvidiHedgehog Daniyar and Algorithms (IZhO19_sortbooks)C++17
100 / 100
1218 ms102096 KiB
#include <bits/stdc++.h> using namespace std; #define ll long long #define pll pair<ll, ll> #define pii pair<int, int> #define fs first #define sc second #define pb push_back const int maxn=1e6; int seg[4*maxn],lzy[4*maxn]; void prop(int v){ seg[2*v+1]=max(seg[2*v+1],lzy[v]); seg[2*v+2]=max(seg[2*v+2],lzy[v]); lzy[2*v+1]=max(lzy[2*v+1],lzy[v]); lzy[2*v+2]=max(lzy[2*v+2],lzy[v]); } int upd(int v,int l,int r,int l2,int r2,int x){ if(l>r2||r<l2)return 0; if(l2<=l&&r<=r2){ lzy[v]=max(lzy[v],x); return seg[v]=max(seg[v],x); } prop(v); int m=(l+r)/2; return seg[v]=max(upd(2*v+1,l,m,l2,r2,x),upd(2*v+2,m+1,r,l2,r2,x)); } int query(int v,int l,int r,int idx){ if(idx<l||idx>r)return 0; if(l==r)return seg[v]; prop(v); int m=(l+r)/2; return max(query(2*v+1,l,m,idx),query(2*v+2,m+1,r,idx)); } void solve() { int n,q; cin>>n>>q; int a[n]; for(int i=0;i<n;i++)cin>>a[i]; bool ans[q]; vector<pair<pii,int>> qry[n]; for(int i=0;i<q;i++){ int l,r,k; cin>>l>>r>>k; qry[--r].pb({{--l,k},i}); } vector<int> st; for(int i=0;i<n;i++){ while(!st.empty()&&a[st.back()]<=a[i])st.pop_back(); if(!st.empty()){ int l,r=st.back(); if(st.size()>1)l=st[st.size()-2]; else l=0; upd(0,0,n-1,l,r,a[r]+a[i]); } st.pb(i); for(auto[p,idx]:qry[i]){ auto[l,k]=p; ans[idx]=query(0,0,n-1,l)<=k; } } for(bool b:ans)cout<<b<<'\n'; } int main() { #ifdef FPO freopen("in","r",stdin); freopen("out","w",stdout); #endif ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); solve(); }
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