var
	a,b:array[1..1000] of integer;
	pom,i,j,t:INTEGER;
BEGIN
	readln(t);
	for i:=1 to t do
		readln(a[i],b[i]);
	for i:=1 to t do
	begin
		pom:=a[i];
		for j:=1 to b[i]-1 do
			a[i]:=a[i]+(a[i]*pom);
		writeln(a[i]);
	end;
END.