import java.io.*;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;

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 div = a / c % c;
        long mod = a % c;
        long ans = IntStream.range(1, c).mapToLong(i -> pow(i, b, c) * (i <= mod ? div + 1 : div) % c)
            .reduce(0, (x, y) -> (x + y) % c);
        System.out.println(ans);
    }
    
    static long pow(long x, long p, int mod) {
        if (p == 0) {
            return 1;
        } else if (p % 2 == 0) {
            return pow(x * x % mod, p / 2, mod);
        } else {
            return pow(x, p - 1, mod) * x % mod;
        }
    }
}
class Scanner {
    BufferedReader br;
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() {
        try {
            br = new BufferedReader(new InputStreamReader(System.in));
        } catch (Exception e) {
            
        }
    }
    
    public int nextInt() {
        return Integer.parseInt(next());
    }
    
    public long nextLong() {
        return Long.parseLong(next());
    }
    
    public double nextDouble() {
        return Double.parseDouble(next());
    }
    
    public String next() {
        try {
            while (!st.hasMoreTokens()) {
                st = new StringTokenizer(br.readLine());
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            return st.nextToken();
        }
    }
    
}