bla

def solve():
    n, x, k = [int(i) for i in input().split(' ')]
    t_arr = [int(i) for i in input().split(' ')]

    Ts = sorted(list(set(t_arr)))[:k]
    len_ts = len(Ts)

    counter = 0
    day = 0

    while True:
        day = Ts[0]
        counter += 1
        if counter == k:
            print(day)
            return

        Ts[0] += x
        i = 0
        while i < len_ts - 1 and Ts[i] >= Ts[i + 1]:
            if Ts[i] == Ts[i + 1]:
                Ts.remove(Ts[i])
                len_ts -= 1
                break

            Ts[i], Ts[i + 1] = Ts[i + 1], Ts[i]
            i += 1




if __name__ == '__main__':
    solve()