func main()
	var x: int :: cui@inputInt()
	var y: int :: cui@inputInt()
	const kMax: int :: 100
	var p: int :: x.abs() + y.abs() * 10
	if(p >= kMax)
		do cui@print("NO\n")
		ret
	end if
	
	var pos: []bool :: #[kMax]bool
	do pos[0] :: true
	for(1, 3)
		var posPre: []bool :: ##pos
		for i(0, kMax - 1)
			if(posPre[i])
				var xx: int :: i % 10
				var yy: int :: i / 10
				var dx: []int :: [2, 2, 1, 1, -1, -1, -2, -2]
				var dy: []int :: [1, -1, 2, -2, 2, -2, 1, -1]
				for j(0, 7)
					do pos[(xx + dx[j]).abs() + (yy + dy[j]).abs() * 10] :: true
				end for
			end if
		end for
	end for
	var ans: bool :: pos[p]
	do cui@print(ans ?("YES\n", "NO\n"))
end func