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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#608487#9250. Max GCD_CLY_TL 42ms52948kbC++141.6kb2024-10-03 22:12:082024-10-03 22:12:09

Judging History

你现在查看的是最新测评结果

  • [2024-10-03 22:12:09]
  • 评测
  • 测评结果:TL
  • 用时:42ms
  • 内存:52948kb
  • [2024-10-03 22:12:08]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
inline long long read(){
    long long x=0; char ch; bool f=0;
    while(((ch=getchar())<'0'||ch>'9')&&ch!='-') ;
    if(ch=='-') f=1;
    else x=ch^48;
    while((ch=getchar())>='0'&&ch<='9') x=(x<<1)+(x<<3)+(ch^48);
    return f?-x:x;
}
const int N=1e6+5;
int n,a[N],q;
vector<int> v[N];
int p[N];
vector<pair<int,int> > V[N];
struct tree{
	int mx;
}t[N<<2];
#define ls (p<<1)
#define rs (p<<1|1)
void up(int p){
	t[p].mx=max(t[ls].mx,t[rs].mx);
}
void cg(int p,int w,int l,int r,int d){
	if(l==r){
		t[p].mx=max(t[p].mx,d); return;
	}
	int mid=(l+r)/2;
	if(w<=mid) cg(ls,w,l,mid,d);
	else cg(rs,w,mid+1,r,d);
	up(p);
}
int ask(int p,int st,int en,int l,int r){
	if(st<=l&&r<=en) return t[p].mx;
	int mid=(l+r)/2,v=0;
	if(st<=mid) v=ask(ls,st,en,l,mid);
	if(mid<en) v=max(v,ask(rs,st,en,mid+1,r));
	return v;
}
int ans[N];
int main(){
//	freopen("t2.in","r",stdin);
//	freopen("t2.out","w",stdout);
	n=read(),q=read();
	for(int i=1;i<=n;i++) a[i]=read(),v[a[i]].push_back(i);
	for(int d=1;d<=1e6;d++){
		int c=0;
		for(int i=d;i<=1e6;i+=d){
			for(int ps:v[i]) p[++c]=ps;
		}
		sort(p+1,p+1+c);
		for(int i=1;i<c-1;i++){
			int x=p[i],y=p[i+1];
			int l=i+2,r=c;
			while(l<=r){
				int mid=(l+r)/2;
				if(p[mid]-y>=y-x) r=mid-1;
				else l=mid+1;
			}
			if(l<=c) V[p[l]].push_back({x,d});
		}
	}
	for(int i=1;i<=q;i++){
		int l=read(),r=read();
		V[r].push_back({l,-i});
	}
	for(int i=1;i<=n;i++){
		for(auto [x,d]:V[i]){
			if(d>0) cg(1,x,1,n,d);
			else ans[-d]=ask(1,x,i,1,n);
		}
	}
	for(int i=1;i<=q;i++) printf("%d\n",ans[i]);
	return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 42ms
memory: 52948kb

input:

8 8
8 24 4 6 6 7 3 3
1 5
2 6
3 7
5 8
4 8
1 3
2 5
3 8

output:

4
2
3
1
3
4
2
3

result:

ok 8 tokens

Test #2:

score: -100
Time Limit Exceeded

input:

150000 100000
982800 554400 665280 982800 997920 720720 786240 831600 997920 982800 786240 982800 942480 831600 887040 665280 831600 960960 786240 982800 786240 942480 665280 831600 942480 665280 982800 960960 960960 997920 720720 960960 960960 665280 982800 665280 982800 942480 786240 997920 554400...

output:


result: