function area(x1,x2,y1,y2,  out) {
	out= (x2-x1)*y1 + (x2- x1) * 0.5 * (y2 - y1)
		return out
}
Pass==2 && FNR==1 {x1=y1=0}
$1==x1 { next }
{ x2=$1; y2=$2
	if (Pass==1) {
		baseline += area(x1,x2,y1,y2)
	} else {
		other += area(x1,x2,y1,y2) }
	x1=$1;y1=$2 }
END      {r=int(100*other /baseline )
		  r = r > 100 ? 100 : r
		  print r
}