f(){
	((v>0&v<=n&u>0&u<=n&&!h[v*n+u]++))&&{
		echo $[{v,u}]
		read r
		((r&&(s[k++]=v,s[k++]=u)))
	}
}
Black=1
read n m
v=1 u=1 f
for((;k;)){
	((x=s[--k],y=s[--k]))
	v=y+1 u=x f
	v=y u=x+1 f
	v=y u=x-1 f
	v=y-1 u=x f
}
res=(Yes No)
echo ${res[!h[n*n+n]]}