program Pithagoras;
var a,b,c:real;
begin
   writeln(' Pithgoras tetel:');
   writeln('    Ket befogobol kiszamolom az atfogot.');
   write(' a=');   readln(a);
   write(' b=');   readln(b);
   c:=sqrt(a*a+b*b);
   writeln('         Az atfogo: c=',c:3:5);
end.