func_code_string: #include <bits/stdc++.h>   using namespace std;   const int MOD = 1e9 + 7;   const int INF = 1e9 + 7;   const int base = 1e9;   const int MAX = 1e5;   const double EPS = 1e-9;   const double PI = acos(-1.);   int main() {     char x;     string s1, s2, res;     vector<char> v(10000);     int c1, c2, cnt = 0, i = 0;     cin >> s1 >> s2;     if ((s1.length() - 1 + s2.length()) % 2 == 1) {       cout <<  Impossible ;       return 0;     }     for (int i = 0; i < s1.length(); i++) {       if (s1.substr(i, 1) ==  | ) {         c1 = cnt;         cnt = 0;       } else {         cnt++;       }     }     c2 = cnt;     if (max(c1, c2) > (s1.length() - 1 + s2.length()) / 2) {       cout <<  Impossible ;       return 0;     }     if (c1 > c2) {       res.append(s2, 0, (s2.length() - (c1 - c2)) / 2);       res.append(s1);       res.append(s2, (s2.length() - (c1 - c2)) / 2,                  (s2.length() + (c1 - c2)) / 2);     } else {       res.append(s2, 0, (s2.length() + (c2 - c1)) / 2);       res.append(s1);       res.append(s2, (s2.length() + (c2 - c1)) / 2,                  (s2.length() - (c2 - c1)) / 2);     }     cout << res;     return 0;   }   