import std.stdio, std.conv, std.string, std.bigint;
import std.math, std.random, std.datetime;
import std.array, std.range, std.algorithm, std.container, std.format;
string read(){ static string[] ss; while(!ss.length) ss = readln.chomp.split; string res = ss[0]; ss.popFront; return res; }

void main(){
	int a = read.to!int;
	int b = read.to!int;
	
	auto ans = "NO";
	if(a < b) ans = "YES";
	
	ans.writeln;
	if(a >= b) (a + 1 - b).writeln;
	else (b - a - 1).writeln;
	
}