#include <bits/stdc++.h>

using namespace std;

const int MAXN = 100005;

int v[MAXN], dp[18][MAXN], logar[MAXN];

int main()
{
    ifstream fin("rmq.in");
    ofstream fout("rmq.out");
    int n, m;
    fin >> n >> m;
    for(int i = 1; i <= n; ++i)
        fin >> v[i];
    logar[1] = 0;
    for(int i = 2; i <= n; ++i)
        logar[i] = logar[i / 2] + 1;
    for(int i = 0; i <= logar[n] + 1; ++i)
        for(int j = 0; j <= n + 1; ++j)
            dp[i][j] = 1e9;
    v[n + 1] = 1e9;
    for(int i = 1; i <= n; ++i)
        dp[0][i] = min(v[i], v[i + 1]);
    for(int i = 1; i <= logar[n]; ++i){
        for(int j = 1; j <= n; ++j)
            dp[i][j] = min(dp[i - 1][j + (1 << (i - 1))], dp[i - 1][j]);
    }
    while(m){
        int x, y;
        fin >> x >> y;
        int logdif = logar[y - x + 1];
        fout << min(dp[logdif][x], dp[logdif][y - (1 << logdif)]) << "\n";
        m--;
    }
    return 0;
}