10252 Common Permutation-XLtXdFFB.txt

#include<iostream>
#include<set>
#include<cstdio>
#include<cctype>
#include<vector>
#include<algorithm>
#include<fstream>
using namespace std;
int main()
{
    string str,s;
    while(getline(cin,str)){
        getline(cin,s);
        vector<char>v;
        int len1 = str.size();
        int len2 = s.size();
        for(int i=0; i<len1; i++){
            for(int j=0; j<len2; j++){
                if(str[i]==s[j]){
                    s[j] = '=';
                    v.push_back(str[i]);
                    break;
                }
            }
        }
        sort(v.begin(),v.end());
        vector <char > :: iterator i;
        for(i = v.begin(); i!=v.end(); i++)
            cout<< *i;
        cout<<endl;
    }
    return 0;
}