def poly_hash(s):
    B = 91
    M = 100
    h = 0
    for c in s:
        h = (h * B + ord(c)) % M
    return h


def get_pos(key):
    h = poly_hash(key)
    return h % 10, h


def remove(table, key):
    p, h = get_pos(key)
    for i, e in enumerate(table[p]):
        if e[1] == key:
            table[p].pop(i)
            return e[2]
    return 'KeyError'