print((function (f, g, m)
	local a = f()
	if a==true then return "YES" end
	for _=2,m do if g(a) then return "YES" end end
	return "NO"	
end)(function ()
	local a = {0}
	for e in io.stdin:read("*l"):gmatch("%d+") do
		if e=="777" then return true end
		e=tonumber(e) table.insert(a,e) a[1]=a[1]+e
	end
	return a
end, function (a)
	local i = 2
	for e in io.stdin:read("*l"):gmatch("%-?%d+") do e=tonumber(e) a[1],a[i],i=a[1]+e,a[i]+e,i+1 end
	if a[1]<777 then return false end
	for i=2,#a do local t=0 for j=i,#a do t=t+a[j]
		if t==777 then return true end
		if t>777 then break end
	end end
	return false
end, tonumber(io.stdin:read("*l"):match("%d+%s(%d+)"))))