#include <bits/stdc++.h>
using namespace std;
int main() {
string s;
cin>>s;
int n,a;
a=s.size();
cin>>n;
while(n--)
{
char x;
cin>>x;
if(x==s[0])
s.erase(0,1);
for(int i=0;i<s.size();i++)
{
if(s[i]==x)
s.erase(i,1);
}
if(x==s[s.size()-1])
s.erase(s.size()-1,1);
}
cout<<s;
return 0;
}
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