# include<iostream> # include<cstdio> using namespace std; int main(){ string a,b; int a1=0,b1=0; cin>>a>>b; int len1=a.size(); int len2=b.size(); for(int i=0;;i++){ if(a[i]=='\0') break; else if(a[i]>='0'&&a[i]<='9') a1++; } for(int i=0;;i++){ if(b[i]=='\0') break; else if(b[i]>='0'&&b[i]<='9') b1++; } if(a1>b1){ for(int i=len2-1;i>=0;i--){ if((b[i]>='a'&&b[i]<='z')||(b[i]>='A'&&b[i]<='Z')) cout<<b[i]; } cout<<a[a1-1]; } else{ for(int i=len1-1;i>=0;i--){ if((a[i]>='a'&&a[i]<='z')||(a[i]>='A'&&a[i]<='Z')) cout<<a[i]; } cout<<b[b1-1]; } return 0; }