#include<bits/stdc++.h>
using namespace std;
int main(){ //
	string s;
	cin>>s;
	char ch;
	cin>>ch;
	s[s.size()-1]=ch;
	cout<<s;
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main(){ //
	string s;
	char ch;
	cin>>s>>ch;
	s[s.size()-1]=ch;
	cout<<s;
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main(){ //
	string s;
	char ch;
	cin>>s>>ch;
	s[s.size()-1]=ch;
	cout<<s;
    return 0;
}