//https://qoj.ac/contest/1382/problem/7562
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define PI acos(-1)
#define LSB(i) ((i) & -(i))
#define ll long long
#define pb push_back
#define mp make_pair
#define mt make_tuple
#define fi first
#define sc second
#define th third
#define fo fourth
#define pii pair<int,int>
#define pll pair<ll,ll>
#define ldb double
#define INF 1e15
#define MOD 1000000007
#define endl "\n"

#define all(data)       data.begin(),data.end()
#define TYPEMAX(type)   std::numeric_limits<type>::max()
#define TYPEMIN(type)   std::numeric_limits<type>::min()
ll Pow(ll a,ll b,ll mod)
{
    if(b==0) return 1;
    ll x=Pow(a,b/2,mod); x=(x*x)%mod;
    if(b&1) x=(x*a)%mod;
    return x;
}
int main()
{
    ios::sync_with_stdio(false); cin.tie(0);
    ll p,k,t; cin>>p>>k>>t;
    cout<<Pow(p-k,t,p)<<endl;
    return 0;
}