#include <bits/stdc++.h>
#define eb emplace_back
#define ll long long
#define pii pair<int, int>
#define pli pair<ll, int>
#define pcc pair<char, char>
#define tpl tuple<int, int, int, int>
#define tli tuple<ll, int, int>
#define oo INT_MAX >> 1
using namespace std;

const string fn("rmq");

ifstream in(fn + ".in");
ofstream out(fn + ".out");

#define cin in
#define cout out

int rmq[18][100005], Log[100005];

int query(int l, int r)
{
    int k = Log[r - l + 1];
    return min(rmq[k][l + (1 << k) - 1], rmq[k][r]);
}

int main()
{
    int n, q;
    cin >> n >> q >> rmq[0][1];
    Log[1] = 0;

    for (int i = 2; i <= n; i++)
    {
        cin >> rmq[0][i];
        Log[i] = Log[i / 2] + 1;
    }

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

    while (q--)
    {
        int l, r;
        cin >> l >> r;
        cout << query(l, r) << '\n';
    }
    return 0;
}