use proconio::{input, marker::Usize1};

fn main() {
    input! {
        n: usize,
        m: usize,
        t: i64,
        a: [Usize1; m],
    }

    let mut sum = vec![0; n];
    a.iter().for_each(|&i| sum[i] += 1);

    loop {
        let &maxsum = sum.iter().max().unwrap();
        let &minsum = sum.iter().min().unwrap();
        let maxi = (0..n).find(|&i| sum[i] == maxsum).unwrap();
        let mini = (0..n).find(|&i| sum[i] == minsum).unwrap();
        if sum[maxi] - 1 < sum[mini] + t {
            break;
        }
        sum[maxi] -= 1;
        sum[mini] += t;
    }

    println!("{}", sum.iter().max().unwrap());
}