package main

import (
    "fmt"
)

func main(){
    var l, m, n int
    fmt.Scan(&l)
    fmt.Scan(&m)
    fmt.Scan(&n)
    
    ntom := n / 25
    m += ntom
    n -= ntom * 25

    mtol := m / 4
    l += mtol
    m -= mtol * 4
    
    lto := l / 10
    l -= lto * 10
    
    fmt.Println(l + m + n)
}