func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, m;     cin >> n >> m;     string lan1, lan2;     map<string, string> link;     for (int i = 0; i < m; ++i) {       cin >> lan1 >> lan2;       link[lan1] = lan2;     }     for (int j = 0; j < n; ++j) {       cin >> lan1;       if (lan1.size() <= link[lan1].size())         cout << lan1 <<    ;       else         cout << link[lan1] <<    ;     }     return 0;   }   