function Main(input) {
  const data = input.split("\n")
  let count = 0
  let L = Number(data[0]), M = Number(data[1]), N = Number(data[2])
  M += ~~(N / 25)
  count += N % 25
  L += ~~(M / 4)
  count += M % 4
  count += L % 10
  console.log(count)
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"))