Lehmät

use std::io::stdin;

fn main() {
    let mut buf = String::with_capacity(2);
    stdin().read_line(&mut buf).unwrap();
    
    let (n, _m): (i32, i32) = {
        let mut iter = buf.split_whitespace();
        let n = iter.next().unwrap();
        let m = iter.next().unwrap();

        (n.parse().unwrap(), m.parse().unwrap())
    };

    let mut is_in = false;
    let mut cows = 0;
    for _ in 0..n {
        buf.clear();
        stdin().read_line(&mut buf).unwrap();
        for c in buf.chars() {
            match c {
                '\n' => is_in = false,
                '.' => {}
                '@' => {
                    if is_in {
                        cows += 1;
                    }
                }
                '*' => {
                    is_in = !is_in;
                }
                _ => {}
            }
        }
    }

    println!("{}", cows);
}

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 1, 2

Verdict: ACCEPTED

Test 4

Group: 1, 2

Verdict: WRONG ANSWER

Test 5

Group: 1, 2

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: WRONG ANSWER