A, B, C = gets.split(" ").map{|s| s.to_i}

def mod_exp(b, e, m)
	result = 1
	while e > 0 do
		result = (result * b) % m if (e & 1) == 1
		e >>= 1
		b = (b * b) % m
	end
	result
end

r = [0]

max = C < A ? C : A

1.upto(max) {|i|
	r << r[-1] + mod_exp(i, B, C)
}

n, m = A / C, A % C

puts (n * r[-1] + r[m]) % C