function Main(input) {
  const data = input.trim().split("\n")

  let A = data[0].split("")
  let B = data[1].split("")
  const L = A.length
  let count = 0
  for (let i = 0; i < L; i++) {
    for (let j = 0; j < L; j++) {
      if (A[i] === B[j]) {
        count++
        B[j] = null
        break
      }
    }
  }
  if (count === L) {
    console.log("YES")
  } else {
    console.log("NO")
  }
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"))