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use std::io::{BufRead};
pub fn main() {
let args: Vec<String> = std::env::args().collect();
if args.len() != 2 { panic!("Need exactly 1 argument"); }
let num_days: usize = args[1].parse().expect("Need number of days as argument");
let mut stdin = std::io::stdin();
let mut handle = stdin.lock();
let input: String = {
let mut buf = String::new();
handle.read_line(&mut buf).unwrap();
String::from(buf.trim_end())
};
// counts[i] is the number of fish that breed on days that are divisible by i.
let mut counts: [usize; 7] = [0; 7];
let mut newborn_counts: [usize; 9] = [0; 9];
input.split(',').map(|x| x.parse::<usize>().expect("Malformed input")).for_each(|x| counts[x % 7] += 1);
for i in 0..num_days {
let tmp = newborn_counts[i % 9];
newborn_counts[i % 9] += counts[i % 7];
counts[i % 7] += tmp;
}
println!("After {} days there are {} fishiess", num_days, counts.into_iter().sum::<usize>() + newborn_counts.into_iter().sum::<usize>());
}
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