N = int(input())
P = list(map(int, input().split()))
P = list(map(lambda x : x - 1, P))
D = [0] * N
for i in range(N):
    D[P[i]] = i
ans = 0
for i in range(N):
    v = P[i]
    ans += v - i
    # print("ans", i, v, P, D)
    for j in range(v, i, -1):
        P[D[j]], P[D[j - 1]] = P[D[j - 1]], P[D[j]]
        D[j], D[j - 1] = D[j - 1], D[j]

print(ans)