import java.io._;

object Main {

	def main(arg:Array[String]) = {
		// val in = scala.io.StdIn.readLine();
    val in = new BufferedReader(new InputStreamReader(System.in))
    val line = in.readLine();
		if(line.contains('a') && line.contains('b') && line.contains('c')) println("Yes");
		else println("No");
	}
}
