use std::io::{stdin, BufRead};
pub fn main() {
    let (l, m, n): (usize, usize, usize) = {
        let stdin = stdin();
        let mut v = stdin.lock().lines().flat_map(|l| l.unwrap().parse());
        (v.next().unwrap(), v.next().unwrap(), v.next().unwrap())
    };
    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);
}