#include <bits/stdc++.h>
#define rep(i,n) for(int i=(0);i<(n);i++)

using namespace std;

typedef long long ll;

template<class T> bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T> bool chmin(T &a, const T &b) { if (a>b) { a=b; return 1; } return 0; }

ll powmod(ll a, ll b, ll MOD){
	if(b == 0) return 1;
	if(b & 1) {
		return a * powmod(a, b - 1, MOD) % MOD;
	} else {
		ll d = powmod(a, b / 2, MOD) % MOD;
		return d * d % MOD;
	}
}

int main(){
	cin.tie(0);
	ios::sync_with_stdio(false);

	ll a, b, c;
	cin >> a >> b >> c;

	ll q = a / c, r = a % c;

	ll ans = 0;
	for(ll i = 0; i < c; i++){
		ans += powmod(i, b, c);
		ans %= c;
	}

	ans *= q;
	ans %= c;

	rep(i, r+1){
		ans += powmod(q * c + i, b, c);
		ans %= c;
	}

	cout << ans << endl;
}