use std::io;

fn main() {
    let mut input = String::new();
    io::stdin().read_line(&mut input).unwrap();
    let l: u32 = input.trim().parse().unwrap();
    input = String::new();

    io::stdin().read_line(&mut input).unwrap();
    let m: u32 = input.trim().parse().unwrap();
    input = String::new();

    io::stdin().read_line(&mut input).unwrap();
    let n: u32 = input.trim().parse().unwrap();
    
    let mut total = 100 * l + 25 * m + 1 * n;
    
    let mut quantity = 0;
    total %= 1000; //1000円札に両替後の残り金額
    
    quantity += total / 100;
    total %= 100;
    
    quantity += total / 25;
    total %= 25;

    quantity += total;

    println!("{}", quantity);
    
}