program first;
var
   i,j,k,p,z : real;
begin
   writeln('Input i');
   readln(i);
   writeln('Input j');
   readln(j);
   writeln('Input k');
   readln(k);
   P:=1.5-(I*I-J*J)/i/j/k;
   z:=(p-k)/sqrt(abs(sin(pi/6)));
   writeln('P=  ',p:4:2);
   writeln('Z=  ',z:4:2);
end.