if (a && b || c && d || e) // wtf? Don't make me guess what you intended!
if ((a && b) || (c && d) || e) // clear
if (a && (b || c) && (d || e)) // as clear, but a very different condition
if (a && (b || (c && (d || e)))) // a different condition
if ((((a && b) || c) && d) || e) // another different condition