#include <fstream>
#define NRMAX 100001

using namespace std;

ifstream f("rmq.in");
ofstream g("rmq.out");

long ss[20][NRMAX],pp[NRMAX],n,m;

void read();
void solve();
void write();
int minim(long,long);

int main()
{
	read();
	solve();
	write();
	f.close();g.close();
	return 0;
}

void read()
{
	f>>n>>m;pp[0]=-1;
	for (int i=1;i<=n;i++)
		f>>ss[0][i],pp[i]=pp[i/2]+1;
}

void solve()
{
	for (int i=1;i<=pp[n];i++)
		for (int j=1;j+(1<<i)-1<=n;j++)
			ss[i][j]=minim(ss[i-1][j],ss[i-1][j+(1<<(i-1))]);
}

void write()
{
	for (int i=1;i<=m;i++)
	{
		int a,b,np=1<<pp[b-a-1];
		f>>a>>b;
		int dis=b-a-np;
		g<<minim(ss[np][a],ss[np][a+dis])<<'\n';
	}
}

int minim(long a,long b)
{
	if (a<b && a!=0) return a;
	return b;
}