use std::io::*;
use std::str::*;

fn read<T: FromStr>(sl: &mut StdinLock) -> Option<T> {
    let s = sl.by_ref().bytes().map(|c| c.unwrap() as char)
        .skip_while(|c| c.is_whitespace())
        .take_while(|c| !c.is_whitespace())
        .collect::<String>();

    s.parse::<T>().ok()
}

fn run(sl: &mut StdinLock) {
    let l = read::<i32>(sl).unwrap();
    let m = read::<i32>(sl).unwrap();
    let n = read::<i32>(sl).unwrap();

    let an = n / 25;
    let en = n % 25;

    let am = (m+an) / 4;
    let em = (m+an) % 4;

    let el = (l+am) % 10;
    println!("{}", el + em + en);
}

fn main() {
    let s = stdin();
    let mut sl = s.lock();
    run(&mut sl);
}