Input format: The input data will be composed of a few lines, and each line will have a command key and corresponding arguments. This is a list of command keys and their arguments. Key 1 Arguments numi num2 2 2 numi num2 Explanation Example Sum of two integer numbers. 1 100 200 // Your program should read the two numbers (100 and 200). Then it should display 300 on the screen. Calculate the difference of 2 15 25 two integer numbers. // Your program should display 10 // because the difference between // 15 and 25. // Note that the difference of two // numbers always zero or positive // number. 9 No argument Quit // Your program should quit. In this homework, you can assume that all input data is valid. For example, you can always assume that there will be two valid integer arguments for the command key 1. Sample Run 0: Assume that the user typed the following three lines 1 1 2 1 -5 -9 9 This is the correct output of your program. 3 -14