package main

import (
	"bufio"
	"fmt"
	"io"
	"os"
	"strconv"
)

// 未実装
func main() {
	sc := NewScanner(os.Stdin)
	L, _ := sc.NextInt() //100円硬貨
	M, _ := sc.NextInt() //25円硬貨
	N, _ := sc.NextInt() //1円硬貨

	fmt.Println(solve(L, M, N))
}

func solve(l, m, n int) int {
	total := l*100 + m*25 + n

	coins := [...]int{1000, 100, 25}
	sum := 0
	for _, coin := range coins {
		if total >= coin {
			a := total / coin
			if coin != 1000 {
				sum += a
			}
			total -= coin * a
		}
	}
	return sum + total
}

type Scanner struct {
	*bufio.Scanner
}

func NewScanner(r io.Reader) *Scanner {
	return &Scanner{
		bufio.NewScanner(r),
	}
}

func (s *Scanner) Next() (string, error) {
	s.Scanner.Split(bufio.ScanWords)
	return s.nextToken()
}

func (s *Scanner) nextToken() (string, error) {
	sc := s.Scanner
	if sc.Scan() {
		return sc.Text(), nil
	}
	if sc.Err() != nil {
		return "", sc.Err()
	}
	return "", io.EOF
}

func (s *Scanner) NextInt() (int, error) {
	token, err := s.Next()
	if err != nil {
		return 0, err
	}
	return strconv.Atoi(token)
}