use std::io::{stdin, Read, StdinLock};
use std::str::FromStr;

struct Input {
    l: usize,
    m: usize,
    n: usize,
}

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

fn solve(input: Input) {
    let sum = input.l * 100 + input.m * 25 + input.n;
    let n100 = (sum % 1000) / 100;
    let n25 = (sum % 1000 % 100) / 25;
    let n1 = sum % 1000 % 100 % 25;

    println!("{}", n100 + n25 + n1);
}

fn next_token<T: FromStr>(cin_lock: &mut StdinLock) -> T {
    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>()
        .parse::<T>()
        .ok()
        .unwrap()
}

fn main() {
    let cin = stdin();
    let mut cin_lock = cin.lock();
    let input = read_input(&mut cin_lock);
    solve(input);
}