A, B, C = map(int, input().split())

res = 0

for i in range(1, min(A, C) + 1):
    res += pow(i, B, C)
    res %= C

if A < C:
    print(res)
    exit()

res *= A // C
res %= C
A %= C

for i in range(1, A):
    res += pow(i, B, C)
    res %= C

print(res)