#include<bits/stdc++.h>
using namespace std;
string s1,s2;
string deal(string s){
	string ans="";
	for(int i=0,len=s.size();i<len;i++){
		if(isupper(s[i])) ans=ans+char(s[i]+32);
		else if(islower(s[i])) ans=ans+s[i];
	}
	return ans;
}
int main()
{
	getline(cin,s1);
	getline(cin,s2);
	s1=deal(s1);
	s2=deal(s2);
	if(s1==s2) cout<<"YES";
	else cout<<"NO";
    return 0;
}