1. https://leetcode.com/problems/string-to-integer-atoi/
2. https://leetcode.com/problems/minimum-remove-to-make-valid-parentheses/

I solved the second one with a non optimal solution very fast and worked out the best solution with the recuitor since there was still a lot of time left. Keep in mind communication is the key and the recuitor is trying to help you. The hr informed me for next ground after couple days.