#include<bits/stdc++.h>
using namespace std;
ifstream f("rmq.in");
ofstream g("rmq.out");

int n, m, rmq[20][100010], v[100010];


int main()
{
    f>>n>>m;

    for(int i=1;i<=n;++i)
        f>>rmq[0][i];

    for(int i=1;(1<<i)<=n;++i)
        for(int j=1;j+(1<<(i-1))<=n;++j)
                rmq[i][j]=min(rmq[i-1][j], rmq[i-1][j+(1<<(i-1))]);

    for(int i=2;i<=n;++i)
        v[i]=1+v[i/2];

    for(int i=1;i<=m;++i)
    {
        int x,y;
        f>>x>>y;
        g<<min(rmq[v[y-x+1]][x], rmq[v[y-x+1]][y-(1<<v[y-x+1])+1])<<'\n';
    }

    return 0;
}