package main

import "fmt"

func abs(a int) int {
	if a >= 0 {
		return a
	}
	return -a
}

func main() {
	var a, b int
	fmt.Scan(&a, &b)
	if (a + 1) <= b {
		fmt.Println("YES")
	} else {
		fmt.Println("NO")
	}
	fmt.Println(abs((a + 1) - b))
}