#include <bits/stdc++.h>
#define DB double
#define LL long long

#define MST(a, b) memset((a), (b), sizeof(a))
#define MRK() cout << "Mark" << endl;
#define WRT(x) cout << #x << " = " << (x) << endl;

#define MAXN 1010000
#define MAXM 2010000
#define MOD 998244353  // 1000000007
#define INF 0x3f3f3f3f
#define LLINF 0x3f3f3f3f3f3f3f3f
#define EPS 1e-5

#define _ 0
using namespace std;

LL n, q, p;

int main() {
    cin >> n >> q >> p;
    q = (q % p + p) % p;
    LL ans = 0, x = 1;
    for (int i = 0; i < n; i++) {
        ans = (ans + x) % p;
        x = x * q % p;
    }
    cout << ans % p << endl;
    return ~~(0 ^ _ ^ 0);
}