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var a:set of 0..40;
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n,i,m:longint;
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begin
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a:=[];
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n:=0;
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randomize;
7![]()
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repeat
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m:=random(40);
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if not(m in a) then
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begin
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a:=a+[m];
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inc(n);
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end;
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until n=10;
16![]()
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n:=0;
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for i:=0 to 40 do
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if i in a then
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begin
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write(i:3);
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inc(n);
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if n mod 5=0 then writeln;
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end;
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end.

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