//μ's forever
#include <bits/stdc++.h>
//#define getchar nc
using namespace std;
inline char nc(){
    static char buf[100000],*p1=buf,*p2=buf;
    return p1==p2&&(p2=(p1=buf)+fread(buf,1,100000,stdin),p1==p2)?EOF:*p1++;
}
inline int read()
{
    register int x=0,f=1;register char ch=getchar();
    while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
    while(ch>='0'&&ch<='9')x=(x<<3)+(x<<1)+ch-'0',ch=getchar();
    return x*f;
}
inline void write(register int x)
{
    if(!x)putchar('0');if(x<0)x=-x,putchar('-');
    static int sta[20];register int tot=0;
    while(x)sta[tot++]=x%10,x/=10;
    while(tot)putchar(sta[--tot]+48);
}
int p,k,t;
int power(int a,int b){
    int res=1;
    while(b){
        if(b&1) res=1ll*res*a%p;
        a=1ll*a*a%p,b>>=1;
    }
    return res;
}
int main()
{
    p=read(),k=read(),t=read();
    int val=power(p-k,t);
    printf("%d",val);
    return 0;
}