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program druhy;
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{$N+}
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uses crt,mojeunit;
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var
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   a,b,c  : integer;
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   koren1,koren2 : double;
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type
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   koreny = record
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       x1 : double;
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       x2 : double;
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   end;
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{procedure vyres(a,b,c: integer; var x1,x2 : double);
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var
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   diskr : double;
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begin
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   diskr:= b*b -4 * a * c;
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   if (diskr < 0) then
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   begin
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      writeln ('Rovnice nema realne reseni');
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      exit;
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   end;
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   if(diskr = 0) then
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   begin
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      x1:= -b/2*a;
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      writeln('rovnice ma jeden koren : ', x1)
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   end
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   else begin
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        x1:= (-b+sqrt(diskr))/2;
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        x2:= (-b-sqrt(diskr))/2;
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        writeln('Rovnice ma dva koreny ',x1,' ',x2)
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   end;
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end;}
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begin
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   clrscr;
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{   writeln ('zadejte tri koreny rovnice:');
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   readln(a);
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   readln(b);
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   readln(c);
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   vyres(a,b,c, koren1, koren2);
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  } readln;
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end.