A,B,C = map(int,input().split())
Q = A//C
R = A%C
a = 0
for i in range(1,C):
    a = (a+pow(i,B,C))%C
ans = (Q*a)%C
for i in range(1,R+1):
    ans = (ans+pow(i,B,C))%C
print(ans)