const MOD: usize = 1e9 as usize + 7;

fn dfs(s: &str, dp: &mut Vec<Option<usize>>) -> usize {
    if s.len() <= 1 {
        return 1usize;
    }
    if dp[s.len()].is_some() {
        return dp[s.len()].unwrap();
    }
    let mut ret = 1usize;
    let n = s.len();
    for i in 1..=n/2 {
        if s[0..i] == s[n-i..n] {
            ret += dfs(&s[i..n-i], dp);
            ret %= MOD;
        }
    }
    dp[s.len()] = Some(ret);
    ret
}

fn main() {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    let s = s.trim();

    let mut dp = vec![None; s.len()+1];
    println!("{}", dfs(s, &mut dp));
}