a, b, c = map(int, input().split())

q, r = divmod(a, c)
ans = 0
for i in range(1, c):
    if i <= r:
        ans += (q + 1) * pow(i, b, c) % c
    else:
        ans += q * pow(i, b, c) % c
    ans %= c
print(ans)