def twoArrays(k, A, B):
    # Write your code here
    first = sorted(A)
    second = sorted(B,reverse= True)
    checkFalse = False
    for idx in range(len(first)):
        recordA = first[idx] 
        recordB = second[idx]
        sumRecord = recordA+recordB
        if sumRecord <k:
            checkFalse = True
            break
    if checkFalse:
        print("NO")
        return "NO"
    else: 
        print ("YES")
        return "YES"