{"blocks": [{"key": "b2982123", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "3030b14b", "text": "Given a large password file, build a program to read the required password(s) while minimizing memory usage. How would you optimize the space so that only the needed content is loaded? Given a mathematical expression as a string, write code to evaluate it using a depth-first-search (DFS) approach.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}