import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long a = sc.nextLong();
        long b = sc.nextLong();
        int c = sc.nextInt();
        long div = a / c % c;
        long mod = a % c;
        long ans = 0;
        for (int i = 1; i < c; i++) {
            if (i <= mod) {
                ans += powMod(i, b, c) * (div + 1) % c;
            } else {
                ans += powMod(i, b, c) * div % c;
            }
            ans %= c;
        }
        System.out.println(ans);
   }
   
   static long powMod(long x, long y, long mod) {
       if (y == 0) {
           return 1;
       } else if (y % 2 == 0) {
           return powMod(x * x % mod, y / 2, mod);
       } else {
           return powMod(x, y - 1, mod) * x % mod;
       }
   }
}