import "io"

let f(x, y, z) be
{ let a = x * y;
  let b = y * z;
  let c = a * 2 + y + b * (x + 1);
  resultis c / 5 }

let start() be
{ let a = 1;
  a +:= f(2, 6, 4);
  out("the result is %d\n", a) }