function Main(input){
  var d = input.split("\n");
  var a = d[0].split(".");
  var b = d[1].split(".");
  var c=0,d=0;
  for(var i=0; i<3; i++){
    var e = 3-i;
    e*=e;
    if(a[i]>b[i]){
      c+=e;
    } else if(a[i]<b[i]){
      d+=e;
    }
  }
  if(c>=d){
    console.log("YES");
  } else {
    console.log("NO");
  }
}

Main(require("fs").readFileSync("/dev/stdin","utf-8"));