use std::io::{self, Read};

#[derive(Debug)]
struct Input {
    l: i32,
    m: i32,
    n: i32,
}

fn next_token(cin_lock: &mut io::StdinLock) -> String {
    cin_lock.by_ref().bytes().map(|c| c.unwrap() as char)
        .skip_while(|c| c.is_whitespace())
        .take_while(|c| !c.is_whitespace())
        .collect::<String>()
}

fn read_input(cin_lock: &mut io::StdinLock) -> Input {
    Input {
        l: next_token(cin_lock).parse().unwrap(),
        m: next_token(cin_lock).parse().unwrap(),
        n: next_token(cin_lock).parse().unwrap(),
    }
}

fn solve(input: &Input, _cin_lock: &mut io::StdinLock) {
    struct Result {
        p: i32,
        l: i32,
        m: i32,
        n: i32,
    }

    impl Result {
        fn number_of_coins(&self) -> i32 {
            self.l + self.m + self.n
        }
    }

    let mut r = Result { p: 0, l: input.l, m: input.m, n: input.n };

    r.m += r.n / 25;
    r.n = r.n % 25;

    r.l += r.m / 4;
    r.m = r.m % 4;

    r.p += r.l / 10;
    r.l = r.l % 10;

    println!("{}", r.number_of_coins());
}

fn main() {
    let cin = io::stdin();
    let mut cin_lock = cin.lock();

    let input = read_input(&mut cin_lock);
    solve(&input, &mut cin_lock);
}