def Findclosest(W, x):
    wm = W[0]
    r = distance(wm, x)
    
    i = 0
    i_n = i
    
    for w in W:
        if distance(w, x) < r:
            r = distance(w, x)
            wm = w
            i_n = i
        i = i + 1
    
    return (wm, i_n)