#include <bits/stdc++.h>
using namespace std;
int main(){
    string s1,s2;
    if(!(cin>>s1>>s2)) return 0;
    cout<<s1.size()+s2.size()<<"\n";
    cout<<abs((int)s1.size()-(int)s2.size())<<"\n";
    string t = s2; reverse(t.begin(), t.end());
    cout<<s1 + t <<"\n";
    cout<<s1[0] << s2[0] << s2.back() << s1.back() <<"\n";
    string a1 = s1.substr(0, s1.size()/2), a2 = s1.substr(s1.size()/2);
    string b1 = s2.substr(0, s2.size()/2), b2 = s2.substr(s2.size()/2);
    reverse(b1.begin(), b1.end());
    reverse(a2.begin(), a2.end());
    cout<< a1 + b2 + b1 + a2;
}
 

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