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2024-03-10 20:32:51 +03:00

19 lines
354 B
ObjectPascal

function IsPrime(x: integer): boolean;
begin
var sqx := Round(Sqrt(x));
var i := 2;
while (i <= sqx) and (x mod i <> 0) do
i += 1;
Result := i > sqx;
end;
var n := 3000000;
begin
writeln(Range(2,n).Where(IsPrime).Count);
writeln(Milliseconds);
writeln(Range(2,n).AsParallel.Where(IsPrime).Count);
writeln(MillisecondsDelta);
end.