func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long int t;     cin >> t;     while (t > 0) {       string s1, s2;       cin >> s1 >> s2;       long long int f = 0;       if (s1.length() > s2.length()) {         cout <<  NO  << endl;         f = -1;       } else {         long long int i = 0, j = 0;         while (i < s1.length() || j < s2.length()) {           if (s2[j] == s1[i] && s2[j + 1] == s1[i + 1]) {             j++;             i++;           } else if (s2[j] == s1[i])             j++;           else if (s2[j] == s1[i + 1] && j > 0)             i++;           else {             cout <<  NO  << endl;             f = -1;             break;           }         }         if (f != -1) cout <<  YES  << endl;       }       t--;     }   }   