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

vector <vector <int> > rmq;
vector <int> bmp;
int n, m;

ifstream fin ("rmq.in");
ofstream fout ("rmq.out");

#define min(a,b) ((a < b) ? a : b)

int main() {
	fin >> n >> m;
	bmp.resize(n+1);
	for (int i = 2; i <= n; ++i)
		bmp[i] = bmp[i/2] + 1;
	rmq.resize(bmp[n]+1);
	for (vector <vector <int> > :: iterator it = rmq.begin(); it != rmq.end(); ++it)
		(*it).resize(n+1);
	for (int i = 1; i <= n; ++i)
		fin >> rmq[0][i];
	for (int i = 1; (1 << i) <= n; ++i)
		for (int j = 1; j <= n - (1 << i) + 1; ++j) 
			rmq[i][j] = min(rmq[i-1][j], rmq[i-1][j + (1 << (i - 1))]);
	for (int i = 1; i <= m; ++i) {
		int x, y;
		fin >> x >> y;
		int pow = bmp[y-x+1], dif = y - x + 1 - (1 << pow);
		fout << min(rmq[pow][x], rmq[pow][x+dif]) << "\n";
	}
}