public String isOne(String[] words) {
		for(int i = 0;i < words.length;i++){
			for(int j = 0;j < words.length;j++){
				if(i!=j && words[j].startsWith(words[i])){
					//System.out.println(words[i]+" "+words[j]);
					return "No, "+i;
				}
			}
		}
		return "Yes";
	}