#include<bits/stdc++.h>
using namespace std;
int f[100010][40];
inline int read()
{
	int x=0,f=1;char ch=getchar();
	while (ch<'0'||ch>'9'){if (ch=='-') f=-1;ch=getchar();}
	while (ch>='0'&&ch<='9'){x=x*10+ch-48;ch=getchar();}
	return x*f;
}
int main() 
{
	int n,m;
	n=read();
	m=read();
	for(int i=1;i<=n;i++)
	{
		f[i][0]=read();
	}
	for(int j=1;j<=log2(n);j++)
	{
		for(int i=1;i<=n-(1<<j)+1;i++)
		{
			f[i][j]=max(f[i][j-1],f[i+(1<<(j-1))][j-1]);
		}
	}
	for(int i=1;i<=m;i++)
	{
		int x,y;
		x=read();
		y=read();
		int mid=log2(y-x+1);
		cout<<max(f[x][mid],f[y-(1<<mid)+1][mid])<<endl;
	}
	return 0;
}