#include <fstream>
#include <vector>
using namespace std;

ifstream f("rmq.in");
ofstream g("rmq.out");
int N, M, x, y, a[100001][20], putere[100001], l_interval, p;

int main()
{
    f >> N >> M;
    for(int i=0; i<N; i++)
        f >> a[i][0];

    for(int i=1; (1<<i) <=N; i++)
    {
        for(int j=0; j + (1<<i)-1 < N; ++j)
            a[j][i] = min(a[j][i-1], a[j + (1<<(i-1))][i - 1]);
    }

    putere[1] = 0; //creez vectorul de suma de puteri ale lui 2
    for(int i=2; i<=N; i++)
        putere[i] = putere[i/2] + 1;

    for(int i=1; i<=M; i++)
    {
        f >> x >> y;
        x--; y--;
        l_interval = y - (x-1);
        p = putere[l_interval];
        g << min(a[x][p], a[x + l_interval - (1<<p)][p]) << "\n";
    }
}