Submission #1156444

#	Time	Username	Problem	Language	Result	Execution time	Memory
1156444		SyedSohaib_123	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++20	77 / 100	918 ms	121548 KiB

sortbooks

#include <bits/stdc++.h>

using namespace std;

#define append push_back
// #define int long long

const int N=1e6+10,LG=21;
int mod=998244353;

int a[N],b[N],tree[N<<2],n,most,mxx;
vector<int>seg[N<<2];
vector<int>v;

void build(int l=1,int r=n,int s=1){
    if(l==r){
        seg[s]={a[l]};
        return;
    }
    int m=(l+r)>>1;
    build(l,m,s*2);
    build(m+1,r,s*2+1);
    tree[s]=max(tree[s*2],tree[s*2+1]);
    if(seg[s*2].back()>seg[s*2+1][0]) tree[s]=max(seg[s*2].back()+*(--lower_bound(seg[s*2+1].begin(),seg[s*2+1].end(),seg[s*2].back())),tree[s]);
    seg[s]=seg[s*2];
    for(auto i:seg[s*2+1]) seg[s].append(i);
    sort(seg[s].begin(),seg[s].end());
}
void get(int a,int b,int l=1,int r=n,int s=1){
    if(r<a or l>b) return;
    if(a<=l and r<=b){
        most=max(most,tree[s]);
        if(mxx>seg[s][0]) most=max(most,mxx+*(--lower_bound(seg[s].begin(),seg[s].end(),mxx)));
        mxx=max(mxx,seg[s].back());
        return;
    }
    int m=(l+r)>>1;
    get(a,b,l,m,s*2);
    get(a,b,m+1,r,s*2+1);
}

void solve(int tst){
    int m;
    cin>>n>>m;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        b[i]=b[i-1];
        b[i]+=a[i]>=a[i-1];
    }
    if(n<=6e5) build();
    while(m--){
        int a,b_,c;
        cin>>a>>b_>>c;
        most=mxx=0;
        if(n<=6e5) get(a,b_),cout<<(most<=c)<<endl;
        else cout<<(b[b_]-b[a]==b_-a)<<endl;
    }
}

signed main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int t = 1;
    // cin >> t;
    for(int i=1;i<=t;i++){
        solve(i);
        // if(i!=t) cout<<endl;
    }
}

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 13 / 13
• Subtask 4: 17 / 17
• Subtask 5: 30 / 30
• Subtask 6: 0 / 23