from utils.write import _WriteBufferStack as BufWriter
var writer = BufWriter[4096](sys.stdout)

from utils.write import _WriteBufferStack as BufWriter
var writer = BufWriter[4096](sys.stdout)

use std::io::stdin;
use std::io::BufRead;
use std::io::BufReader;

struct Record {
    pub name: String,
    pub count: usize,
}

impl Record {
    pub fn new(name: String, count: usize) -> Record {
        Record { name, count }
    }
}

fn create_record(line: &str) -> Record {
    let mut iter = line.split('\t').peekable();
    let name = iter.peek().unwrap().to_string();
    let count = iter.filter(|s| s.contains("bc")).count();
    Record::new(name, count)
}

fn main() {
    let mut records = vec![];
    let mut buffer = String::new();
    let stdin = stdin();
    let mut input = BufReader::new(stdin.lock());
    while let Ok(bytes_read) = input.read_line(&mut buffer) {
        if bytes_read == 0 {
            break;
        }
        buffer.make_ascii_lowercase();
        records.push(create_record(&buffer));
        buffer.clear();
    }
    let count: usize = records.iter().map(|r| r.count).sum();
    println!("{}", count);
}

use std::io::stdin;
use std::io::BufRead;
use std::io::BufReader;

struct Record {
    pub name: String,
    pub count: usize,
}

impl Record {
    pub fn new(name: String, count: usize) -> Record {
        Record { name, count }
    }
}

fn create_record(line: &str) -> Record {
    let mut iter = line.split('\t').peekable();
    let name = iter.peek().unwrap().to_string();
    let count = iter.filter(|s| s.contains("bc")).count();
    Record::new(name, count)
}

fn main() {
    let mut records = vec![];
    let mut buffer = String::new();
    let stdin = stdin();
    let mut input = BufReader::new(stdin.lock());
    while let Ok(bytes_read) = input.read_line(&mut buffer) {
        if bytes_read == 0 {
            break;
        }
        buffer.make_ascii_lowercase();
        records.push(create_record(&buffer));
        buffer.clear();
    }
    let count: usize = records.iter().map(|r| r.count).sum();
    println!("{}", count);
}

# 128 KiB: http://git.savannah.gnu.org/gitweb/?p=coreutils.git;a=blob;f=src/ioblksize.h;h=266c209f48fc07cb4527139a2548b6398b75f740;hb=HEAD#l23
alias BUF_SIZE: Int = 1024 * 125

# 128 KiB: http://git.savannah.gnu.org/gitweb/?p=coreutils.git;a=blob;f=src/ioblksize.h;h=266c209f48fc07cb4527139a2548b6398b75f740;hb=HEAD#l23
alias BUF_SIZE: Int = 1024 * 125