func_code_string: #include <bits/stdc++.h>   using namespace std;   int m, n;   int main() {     int n;     string vic1, vic2, tmp1, tmp2;     cin >> vic1 >> vic2;     cin >> n;     cout << vic1 <<     << vic2 << endl;     for (int i = 0; i < n; ++i) {       cin >> tmp1 >> tmp2;       if (vic1 == tmp1)         vic1 = tmp2;       else         vic2 = tmp2;       cout << vic1 <<     << vic2 << endl;     }     return 0;   }   