#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

inline ll modpow(ll a, ll b, ll mod) {
  ll res = 1;
  while (b) {
    if (b & 1) res = res * a % mod;
    a = a * a % mod;
    b >>= 1;
  }
  return res;
}

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  ll a, b, c;
  cin >> a >> b >> c;
  ll t = 0;
  rep(i, c) t = (t + modpow(i, b, c)) % c;
  ll ans = t * ((a - 1) / c) % c;
  a %= c;
  rep(i, a + 1) ans = (ans + modpow(i, b, c)) % c;
  cout << ans << '\n';
  return 0;
}