Event Scheduling Conflict

You are managing a series of events with specific time slots. Each event either establishes a conflict relation with another event or checks if two events are in conflict. Implement a program that processes a list of actions. Each action is either 'C x y' for a check between events x and y, or 'E x y' for declaring that events x and y cannot happen at the same time. Your program should output 'YES' for each 'C x y' action if they are in conflict, otherwise output 'NO'. Input format: - The first line contains an integer n (1 ≤ n ≤ 10^5), the number of actions. - The next n lines each contain a string followed by two integers. The first string is either 'E' or 'C', where integers represent events (1 ≤ x, y ≤ 10^6). Output format: - For each 'C x y' action, output 'YES' or 'NO' in a new line. Example: Input: 5 E 1 2 E 2 3 C 1 3 C 1 4 E 4 5 C 1 5 Output: YES NO YES