function main(input) {
  input = input.trim();
  const a = input.split("").map(Number);

  if(a[0]==a[1] || a[1]==a[2] || a[2]==a[0]){
    console.log("Yes");
  }else{
    console.log("No");
  }
    
}
main(require("fs").readFileSync("/dev/stdin", "utf8"));