#include<fstream>
using namespace std;
int n, m, i, j, x, y, p, v[100003], d[17][100003];
ifstream in("rmq.in");
ofstream out("rmq.out");
int main()
{
    in>>n>>m;
    for(i=2; i<=n; i++)
        v[i]=1+v[i/2];
    for(i=1; i<=n; i++)
        in>>d[0][i];
    for(i=1; (1<<i)<=n; i++)
    {
        for(j=1; j<=n; j++)
        {
            d[i][j]=min(d[i-1][j], d[i-1][j+(1<<(i-1))]);
        }
    }
    for(i=1; i<=m; i++)
    {
        in>>x>>y;
        p=v[y-x];
        out<<min(d[p][x], d[p][y-(1<<p)+1])<<"\n";
    }
    return 0;
}