import java.util.*;

class Main {
    static final long MOD=1000000007;
    static final long P=1000000009;
    static long[]h,dp,p;
    static final long b=31;
    static long c(int x,int y){
        long t=h[y];
        t+=h[x]*(P-p[y-x])%P;
        return t%P;
    }
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String s=scan.next();
        int n=s.length();
        int[]a=new int[n];
        for(int i=0;i<n;++i)a[i]=s.charAt(i)-'a';
        h=new long[n+1];
        p=new long[n+1];
        for(int i=0;i<n;++i)
            h[i+1]=(b*h[i]+a[i])%P;
        p[0]=1;
        for(int i=0;i<n;++i)
            p[i+1]=p[i]*b%P;
        dp=new long[n+1];
        dp[0]=1;
        for(int i=1;i<=n/2;++i){
            long t=0;
            for(int j=0;j<=i;++j){
                if(c(j,i)==c(n-i,n-j))t=(t+dp[j])%P;
            }
            dp[i]=t;
        }
        long t=0;
        for(int i=0;i<=n/2;++i)
            t=(t+dp[i])%P;
        //System.err.println(Arrays.toString(dp));
        System.out.println(t);
    }
}