/*====Corycle====*/
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const int inf = 0x3f3f3f3f;
int read() {
    int s = 0, f = 1;
    char c = getchar();
    while (c < '0' || c > '9') {
        if (c == '-')
            f = -1;
        c = getchar();
    }
    while (c >= '0' && c <= '9') {
        s = s * 10 + c - '0';
        c = getchar();
    }
    return s * f;
}
int n, q, ans, mod;
int main() {
    //	freopen("_.in","r",stdin);
    //	freopen("_.out","w",stdout);
    n = read();
    q = read();
    mod = read();
    q = (q % mod + mod) % mod;
    int x = 1;
    for (int i = 1; i <= n; i++) {
        ans = (ans + x) % mod;
        x = 1ll * x * q % mod;
    }
    printf("%d\n", ans);
    return 0;
}