func_code_string: #include <bits/stdc++.h>   using namespace std;   class strocks {    public:     string strocksguy() {}   };   int main() {     strocks strocks;     iostream::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     long long n, m;     cin >> n >> m;     string s, d;     unordered_map<string, string> master;     for (long long i = 0; i < m; i++) {       cin >> s >> d;       if (s.size() > d.size()) {         master.insert(make_pair(s, d));       } else         master.insert(make_pair(d, s));     }     for (long long i = 0; i < n; i++) {       cin >> s;       if (master.find(s) != master.end())         cout << master.at(s) <<    ;       else         cout << s <<    ;     }     return 0;   }   