<p>Given an array of strings <code>names</code> of size <code>n</code>. You will create <code>n</code> folders in your file system <strong>such that</strong>, at the <code>i<sup>th</sup></code> minute, you will create a folder with the name <code>names[i]</code>.</p> <p>Since two files <strong>cannot</strong> have the same name, if you enter a folder name that was previously used, the system will have a suffix addition to its name in the form of <code>(k)</code>, where, <code>k</code> is the <strong>smallest positive integer</strong> such that the obtained name remains unique.</p> <p>Return <em>an array of strings of length </em><code>n</code> where <code>ans[i]</code> is the actual name the system will assign to the <code>i<sup>th</sup></code> folder when you create it.</p> <p> </p> <p><strong class="example">Example 1:</strong></p> <pre> <strong>Input:</strong> names = ["pes","fifa","gta","pes(2019)"] <strong>Output:</strong> ["pes","fifa","gta","pes(2019)"] <strong>Explanation:</strong> Let's see how the file system creates folder names: "pes" --> not assigned before, remains "pes" "fifa" --> not assigned before, remains "fifa" "gta" --> not assigned before, remains "gta" "pes(2019)" --> not assigned before, remains "pes(2019)" </pre> <p><strong class="example">Example 2:</strong></p> <pre> <strong>Input:</strong> names = ["gta","gta(1)","gta","avalon"] <strong>Output:</strong> ["gta","gta(1)","gta(2)","avalon"] <strong>Explanation:</strong> Let's see how the file system creates folder names: "gta" --> not assigned before, remains "gta" "gta(1)" --> not assigned before, remains "gta(1)" "gta" --> the name is reserved, system adds (k), since "gta(1)" is also reserved, systems put k = 2. it becomes "gta(2)" "avalon" --> not assigned before, remains "avalon" </pre> <p><strong class="example">Example 3:</strong></p> <pre> <strong>Input:</strong> names = ["onepiece","onepiece(1)","onepiece(2)","onepiece(3)","onepiece"] <strong>Output:</strong> ["onepiece","onepiece(1)","onepiece(2)","onepiece(3)","onepiece(4)"] <strong>Explanation:</strong> When the last folder is created, the smallest positive valid k is 4, and it becomes "onepiece(4)". </pre> <p> </p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= names.length <= 5 * 10<sup>4</sup></code></li> <li><code>1 <= names[i].length <= 20</code></li> <li><code>names[i]</code> consists of lowercase English letters, digits, and/or round brackets.</li> </ul>