const main = stdin => {
  const input = stdin.trim().split('\n')
  const S = input[0]

  if (S.includes('a') && S.includes('b') && S.includes('c')) {
    console.log('Yes')
  } else {
    console.log('No')
  }
}


// 標準入力
main(require("fs").readFileSync("/dev/stdin", "utf8"))
