Hello everyone,

I was trying to solve 451 D question. and which turn out to be an easy question due to given constrain of distinct times for each alarm clocks (Please refer to question if you don't understand).

Now I had doubt. What if there could be repetitive values for alarm clocks timings. is it possible to solve this problem with greedy approach ?

If Yes/no , can you please provide proof method.

Thank you (GL & HF)