// yukicoder Lv.1 No.32 貯金箱の憂鬱
use proconio::input;

fn main() {
    input! {
        l: i32,
        m: i32,
        n: i32,
    }

    let mut total_money = l * 100 + m * 25 + n * 1;
    let mut coin = 0;
    if total_money > 0 {
        total_money %= 1000;
        coin += total_money / 100;
        total_money %= 100;
        coin += total_money / 25;
        total_money %= 25;
        coin += total_money / 1;
        total_money %= 1;
    }
    println!("{}", coin);
}