Program Begin27;
Var
A, Res: Real;
Begin
WriteLn('Введите A');
ReadLn(A);
Res := Sqr(A);
WriteLn('A^2 = ', Res);
Res := Sqr(A) * Sqr(A);
WriteLn('A^4 = ', Res);
Res := Res * Sqr(A) * Sqr(A);
WriteLn('A^8 = ', Res);
ReadLn;
End.