use std::io::{Read,self};

fn main(){
    let mut buf = String::new();
    io::stdin().read_to_string(&mut buf).unwrap();
    let mut input = buf.split_ascii_whitespace();

    let n:usize = input.next().unwrap().parse().unwrap();
    let m:usize = input.next().unwrap().parse().unwrap();
    
    let mut results:Vec<Vec<String>> = vec![vec![];n];
    for i in 0..n{
        let result = input.next().unwrap().parse::<String>().unwrap();
        for j in result.chars(){
            results[i].push(j.to_string());
        }
        results[i].push(input.next().unwrap().parse::<String>().unwrap());
    }
    
    let mut down = 0;
    for i in 0..n{
        let mut wa = false;
        if results[i][m].parse::<usize>().unwrap() < 1200{
            continue;
        }else{
            for j in 0..4{
                if results[i][j].parse::<char>().unwrap() == 'x'{
                    wa = true;
                    break;
                }
            }
        }
        
        if wa {
            down += 1;
            //println!("down")
        }else{
            //println!("ok")
        }
    }
    
    println!("{}", down)
}