31 lines
768 B
Plaintext
31 lines
768 B
Plaintext
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program sieve;
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const
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size = 8190;
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type
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flagType = array[ 0..size ] of boolean;
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var
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i, k, prime, count, iter : integer;
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flags : flagType;
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begin
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for iter := 1 to 10 do begin
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count := 0;
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for i := 0 to size do flags[ i ] := true;
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for i := 0 to size do begin
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if flags[ i ] then begin
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prime := i + i + 3;
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k := i + prime;
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while k <= size do begin
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flags[ k ] := false;
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k := k + prime;
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end;
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count := count + 1;
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end;
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end;
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end;
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writeln( 'count of primes: ', count );
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end.
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