program sideffect(output); var a, z: integer; function sneaky(x: integer): integer; begin z := z-x; sneaky := sqr(x); end; begin z := 10; a := sneaky(z); writeln(a, z); z := 10; a := sneaky(10) * sneaky(z); writeln(a, z); z := 10; a := sneaky(z) * sneaky(10); writeln(a, z); end.