解决必关

#include<bits/stdc++.h>
using namespace std;
string s,s1;
int main(){
	cin>>s>>s1;
	char c=s1[s1.length()-1];
	int t=0;
	while (s[t]!=c) t++;
	cout<<c;
	for (int i=t-1;i>=0;i--)cout<<s[i];
	for (int i=s.length()-1;i>t;i--) cout<<s[i];
	return 0;
}