import java.io.*; import java.util.*; public class Main { public static void main(String[] args) throws Exception { Scanner sc = new Scanner(); long a = sc.nextLong(); long b = sc.nextLong(); int c = sc.nextInt(); long[] counts = new long[c]; Arrays.fill(counts, a / c); for (int i = 1; i <= a % c; i++) { counts[i]++; } long ans = 0; for (int i = 1; i < c; i++) { ans += pow(i, b, c) * counts[i] % c; ans %= c; } System.out.println(ans); } static long pow(long x, long p, int m) { if (p == 0) { return 1; } else if (p % 2 == 0) { return pow(x * x % m, p / 2, m); } else { return pow(x, p - 1, m) * x % m; } } } class Scanner { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(""); public Scanner() throws Exception { } public int nextInt() throws Exception { return Integer.parseInt(next()); } public long nextLong() throws Exception { return Long.parseLong(next()); } public double nextDouble() throws Exception { return Double.parseDouble(next()); } public String next() throws Exception { while (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } return st.nextToken(); } }