blob: a3099a1d124e12e840b108cf03fd09f1e0863c6e [file] [log] [blame]
use std::error::Error;
use std::io;
use std::process;
fn run() -> Result<u64, Box<dyn Error>> {
let mut rdr = csv::Reader::from_reader(io::stdin());
let mut count = 0;
for result in rdr.byte_records() {
let record = result?;
if &record[0] == b"us" && &record[3] == b"MA" {
count += 1;
}
}
Ok(count)
}
fn main() {
match run() {
Ok(count) => {
println!("{}", count);
}
Err(err) => {
println!("{}", err);
process::exit(1);
}
}
}