#include <cstdio>
#include <cstring>
#include <iostream>
#include <string>
#include <cmath>
#include <bitset>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <algorithm>
#include <complex>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <cassert>
#include <fstream>
#include <utility>
#include <functional>
#include <time.h>
#include <stack>
#include <array>
#define popcount __builtin_popcount
using namespace std;
typedef long long int ll;
typedef pair<int, int> P;
ll powmod(ll a, ll k, ll MOD){
    ll ap=a, ans=1;
    while(k){
        if(k&1){
            ans*=ap;
            ans%=MOD;
        }
        ap=ap*ap;
        ap%=MOD;
        k>>=1;
    }
    return ans;
}
int main()
{
	ll a, b, c;
	cin>>a>>b>>c;
	int r=a%c;
	ll ans=0;
	for(int i=1; i<=c-1; i++){
		(ans+=powmod(i, b, c))%=c;
	}
	ans=ans*(a/c%c)%c;
	for(int i=1; i<=r; i++) (ans+=powmod(i, b, c))%=c;
	cout<<ans<<endl;
	return 0;
}