// Arhiva educationala - Range minimum Query

var
	n, m, i, k, x, y, l, b : longint;
	log : array[0..100000] of byte;
    min : array[0..18,1..100000] of longint;
    f, g: text;

function minim (a, b : longint) : longint;
begin
if (a < b) then minim := a else  minim := b;
end;

begin
assign	(f, 'rmq.in');		assign	(g, 'rmq.out');
reset	(f);				rewrite	(g);
readln	(f, n, m);

for i := 1 to n do readln (f, min[0, i]);

for i := 2 to n do log[i] := log[i shr 1] + 1;

for k := 1 to log[n] do
	for i := 1 to n - (1 shl k) + 1 do
		begin
		min [k, i] := min[k-1, i];
        b := min[k-1, i + (1 shl (k-1))];
		if (min [k, i] > b) then
			min [k, i] := b;
		end;

for i := 1 to m do
	begin
	readln	(f, x, y);
	l := log[y - x + 1];	
	b := min[l, y + 1 - (1 shl l)];
	if (min[l, x] < b) then
		writeln	(g, min[l, x])
	else
		writeln	(g, b);
	end;	
close	(f);				close	(g);
end.