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

fn dfs(offset: usize, dists: &Vec<Vec<usize>>, memo: &mut Vec<Option<usize>>) -> usize {
    if dists.len() == offset {
        return 1;
    }
    let n = dists[offset].len();
    if let Some(x) = memo[offset] {
        return x;
    }
    let mut ret = 1usize;
    for i in 1..=n/2 {
        if dists[offset][n-i] == i {
            ret += dfs(offset+i, dists, memo);
            ret %= MOD;
        }
    }
    memo[offset] = Some(ret);
    ret
}

fn zalgorithm(s: &str) -> Vec<usize> {
    let n = s.len();
    let svec = s.chars().collect::<Vec<_>>();
    let mut ret = vec![0usize; n];
    ret[0] = n;
    let mut i = 1usize;
    let mut j = 0usize;
    while i < n {
        while i+j < n && svec[j] == svec[i+j] {
            j += 1;
        }
        ret[i] = j;

        if j == 0 {
            i += 1;
            continue;
        }
        let mut k = 1usize;
        while k < j && k + ret[k] < j {
            ret[i+k] = ret[k];
            k += 1;
        }
        i += k;
        j -= k;
    }
    ret
}

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

    let n = s.len();
    let mut dists = vec![];
    for i in 0..=n/2-(n+1)%2 {
        dists.push(zalgorithm(&s[i..n-i]));
    }
    let mut dp = vec![None; n];
    println!("{}", dfs(0, &dists, &mut dp));
}