#include <fstream>
#define DIM 100011
using namespace std;
ifstream f("rmq.in");
ofstream g("rmq.out");
int n,m;
int p[DIM],a[21][DIM];

int main(void){
    register int i,j,jv,x,y,b;

    f>>n>>m;
    p[1]=0;
    f>>a[0][1];
    for(i=2;i<=n;i++) f>>a[0][i],p[i]=1+p[i/2];

    for(i=1;(1<<i)<=n;i++){
        for(j=1;j<=n;j++){
            jv=j+(1<<(i-1));
            a[i][j]=a[i-1][j];
            if(jv<=n && a[i-1][jv]<a[i][j])
                a[i][j]=a[i-1][jv];
        }
    }

    for(i=1;i<=m;i++){
        f>>x>>y;
        b=p[y-x+1];
        jv=y-(1<<b)+1;
        g<<min(a[b][x],a[b][jv])<<"\n";
    }
    f.close();
    g.close();
    return 0;
}