fn main() {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    let s = s.trim().chars().map(|c| c as usize - '0' as usize).collect::<Vec<_>>();

    let n = s.len();
    let summary = (0..n).map(|i| s[i] * (i+1)).sum::<usize>();
    let cnt = (0..n).filter(|&i| s[i] == 1).count();
    let mut dp = vec![vec![vec![0usize; summary+1]; cnt+1]; n+1];
    dp[0][0][0] = 1;
    for i in 0..n {
        for j in 0..=cnt {
            for k in 0..=summary {
                dp[i+1][j][k] += dp[i][j][k];
                if j+1 <= cnt && k+i+1 <= summary {
                    dp[i+1][j+1][k+i+1] += dp[i][j][k];
                }
            }
        }
    }
    println!("{}", dp[n][cnt][summary]);
}