Capital One interview questions

Online Assesment: There were 3 questions of which one was something like finding minimum possible sum with OR, second one was related to BFS on graph and third one was Falling apples which was related to dp. Each question had 5 test cases. I had got 14 out off the 15 cases. After the oa, 46 students were shortlisted. Round 1: This was another oa with 2 questions which were to be answered in 45 mins and had a weightage of 50 marks each. The oa was on hackerearth and answers were to be typed in a textbox. First question was based on dp in grids (MaxGold problem). There was only one example given in question and we had to type only the function in the textbox. Second question was a system design question which was similar to system design of google calender (calender design question). This question had 3 sub-questions: What are some non-functional requirements and reason it out? What is the DB schema for the question? Write pseudo-code for sending invites to guests given startTime and endTime. After this round, 22 people were shortlisted.