print((function (M)
	M.cdef 'int scanf(const char*, ...);'
	local C,c,a,n = M.C,M.new("char[1]"),{}
	C.scanf("%d",c) n=c[0] for i=1,n do a[i]=n+1-i end
	C.scanf("%d",c) for _=1,c[0] do
		C.scanf("%d",c) local t=a[n+1-c[0]]
		for i=n+1-c[0],n-1 do a[i]=a[i+1] end a[n]=t
	end
	return a[n]
end)(require'ffi'))