#include<iostream>
using namespace std;
int book256;
int main(){
string s1,s2;
cin>>s1>>s2;
for(int i=0;i<s1.length();i++){
books1\[i]++;
}
int result=0;
for(int i=0;i<s2.length();i++){
if(books2\[i]>0){
books2\[i]--;
}else{
result++;
}
}
if(result!=0){
cout<<"No"<<" "<<result;
}else{
cout<<"Yes"<<" "<<s1.length()-s2.length();
}
return 0;
}