from collections import Counter

def main():
    N = int(input())
    Y = tuple(map(int, input().split()))

    if N == 1:
        print(Y[0])
        return
    elif N == 2:
        print(max(Y) - min(Y))
        return
    else:
        c = Counter(Y).most_common()
        if len(c) == 2:
            ref = c[0][0]
        else:
            ref = sorted(c)[1:-1][0][0]

    dist = 0
    for i, j in c:
        dist += abs(ref - i) * j
    print(dist)

main()