package _1161; import java.io.BufferedReader; import java.io.EOFException; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import java.io.UncheckedIOException; import java.lang.reflect.Array; import java.util.ArrayDeque; import java.util.Arrays; import java.util.Deque; import java.util.Objects; import java.util.regex.Pattern; import java.util.stream.Collectors; public class Main { public void exec() { long a = stdin.nextLong(); long b = stdin.nextLong(); long c = stdin.nextLong(); long ans = 0; for (int x = 1; x < c; x++) { ans += f(a-x+1, c) * MathUtils.modPow(x, b, c); ans %= c; } stdout.println(ans); } private long f(long x, long y) { if (x < 0) { return 0; } if (x % y == 0) { return x / y; } else { return x / y + 1; } } public static class MathUtils { private MathUtils() {} public static long modPow(long x, long y, long mod) { long z = 1; while (y > 0) { if (y % 2 == 0) { x = (x * x) % mod; y /= 2; } else { z = (z * x) % mod; y--; } } return z; } public static long modInv(long x, long mod) { return modPow(x, mod - 2, mod); } public static long pow(long x, long y) { long z = 1; while (y > 0) { if (y % 2 == 0) { x = (x * x); y /= 2; } else { z = (z * x); y--; } } return z; } } private static final Stdin stdin = new Stdin(); private static final Stdout stdout = new Stdout(); public static void main(String[] args) { try { new Main().exec(); } finally { stdout.flush(); } } public static class Stdin { private BufferedReader stdin; private Deque tokens; private Pattern delim; public Stdin() { stdin = new BufferedReader(new InputStreamReader(System.in)); tokens = new ArrayDeque<>(); delim = Pattern.compile(" "); } public String nextString() { try { if (tokens.isEmpty()) { String line = stdin.readLine(); if (line == null) { throw new UncheckedIOException(new EOFException()); } delim.splitAsStream(line).forEach(tokens::addLast); } return tokens.pollFirst(); } catch (IOException e) { throw new UncheckedIOException(e); } } public int nextInt() { return Integer.parseInt(nextString()); } public double nextDouble() { return Double.parseDouble(nextString()); } public long nextLong() { return Long.parseLong(nextString()); } public String[] nextStringArray(int n) { String[] a = new String[n]; for (int i = 0; i < n; i++) a[i] = nextString(); return a; } public int[] nextIntArray(int n) { int[] a = new int[n]; for (int i = 0; i < n; i++) a[i] = nextInt(); return a; } public double[] nextDoubleArray(int n) { double[] a = new double[n]; for (int i = 0; i < n; i++) a[i] = nextDouble(); return a; } public long[] nextLongArray(int n) { long[] a = new long[n]; for (int i = 0; i < n; i++) a[i] = nextLong(); return a; } } public static class Stdout { private PrintWriter stdout; public Stdout() { stdout = new PrintWriter(System.out, false); } public void printf(String format, Object ... args) { String line = String.format(format, args); if (line.endsWith(System.lineSeparator())) { stdout.print(line); } else { stdout.println(line); } } public void println(Object ... objs) { String line = Arrays.stream(objs).map(Objects::toString).collect(Collectors.joining(" ")); stdout.println(line); } public void debug(Object ... objs) { String line = Arrays.stream(objs).map(this::deepToString).collect(Collectors.joining(" ")); stdout.printf("DEBUG: %s%n", line); } private String deepToString(Object o) { if (o == null) { return "null"; } // 配列の場合 if (o.getClass().isArray()) { int len = Array.getLength(o); String[] tokens = new String[len]; for (int i = 0; i < len; i++) { tokens[i] = deepToString(Array.get(o, i)); } return "{" + String.join(",", tokens) + "}"; } return Objects.toString(o); } private void flush() { stdout.flush(); } } }