Checkpoint 1 c9 estimate: 7020 minutes Write a program from scratch that uses a map to find all the modes in an input sequence of integers. Remember, a mode is an integer that occurs at least as many times in the sequence as any other integer. Thus, in the sequence 19 83 12 83 65 19 45 12 45 19 45 Ll; the two modes are 19 and 45. Include one commandline argument to provide an input file. Use operator for maps when inserting values. To complete this checkpoint: show a TA your debugged implementation and how it runs correctly on several interesting test cases. Checkpoint 2 69 estimate: 7020 minutes Rewrite your program from checkpoint 1 to use find or insert or both instead of operator. To complete this checkpoint: show a TA your revised and tested program