#include <bits/stdc++.h> using namespace std; int main() { string a,b; int tmp[26],ans[26]; while(cin>>a>>b){ int flag=0; memset(ans,0,sizeof(ans)); memset(tmp,0,sizeof(tmp)); for(int i=0;i<a.size();i++){ tmp[(a[i]-'a')]++; } for(int i=0;i<b.size();i++){ if(tmp[(b[i]-'a')]!=0){ ans[(b[i]-'a')]++; } } for(int i=0;i<26;i++){ if(ans[i]!=0){ cout<<(char)('a'+i); flag=1; } } if(flag) cout<<endl; } return 0; } |
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