Write a Python code $($using Google Colab$)$ to solve the "Crash Cost Problem" that we discussed in class $($Chapter $6).$

The user will be prompted to upload the data file containing the problem's details.

The code will first calculate the normal completion time and the total cost without crashing any activities.

The code will then prompt the user to enter the modified completion time, i$.$e$.,$ to reduce the completion time by one or more periods.

The program will continue asking the user for new modified times until the user chooses to exit.

You can test your code using the problem we solved in class.