AFunc1

##
function SumRange(a,b: integer): integer;
begin
 for var i := a to b do Result += i
end;

var (a1,b1) := readinteger2;
var (a2,b2) := readinteger2;
var (a3,b3) := readinteger2;
println(SumRange(a1,b1));
println(SumRange(a2,b2));
println(SumRange(a3,b3));