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#include <bits/stdc++.h>
#include "futbol.h"
#include "message.h"

#define forn(i, n) for(int i = 0; i < n; ++i)

using namespace std;

typedef long long ll;
typedef pair<int, int> pint;

ll P = 1;

ll inv(ll a, ll b)
{
    return 1<a ? b - inv(b%a,a)*b/a : 1;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    
    int myId = 0;

    ////
    myId = MyNodeId();
    ////

    if (myId == 0)
    {
        ll N = 0, K = 0;

        ////
        //cin >> N >> K >> P;
        N = GetN(); K = GetK(); P = GetP();
        ////

        ll ans = 1;
        ll bi = 1;

        for (ll i = 1; i <= K; i++)
        {
            bi = ( ( ((N + 1 - i) * inv(i,P)) % P) * bi) % P;
            ans = (ans + bi) % P;
        }

        cout << ans;
    }
    
    return 0;
}