aoc2022/d10/part1.awk

BEGIN { x=1 }
function inc() {
	c+=1
	if (index("20,60,100,140,180,220,", c ",")>0) {
		S += x*c
	}
}
{ inc() }
$1 == "addx" {
	inc()
	x+=$2
}
END { print S }