C++ Solution : Append_And_Delete | _______ Link

string appendAndDelete(string s, string t, int k) 
{
    int n = s.size(), m = t.size(), i = 0 , j = 0; ;
    if (n + m <= k)  return "Yes";
     
    while(i<n and j<m and s[i]==t[j]) i++,j++; 
    
    
    int gap = (n - i) + (m - j);
    
    if (gap <= k and (k - gap) % 2 == 0)  
       return "Yes";

    return "No";
}

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