use std::io::stdin;
pub fn main() {
    let (l, m, n): (usize, usize, usize) = {
        let getnum = || {
            let mut s = String::new();
            let _ = stdin().read_line(&mut s);
            s.trim().parse::<usize>().unwrap()
        };
        (getnum(), getnum(), getnum())
    };
    let sum = l * 100 + m * 25 + n;
    let m = sum % 1000;
    let (y100, m) = (m / 100, m % 100);
    let (y25, y1) = (m / 25, m % 25);
    println!("{}", y100 + y25 + y1);
}