Add project

README.md

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+# RepoBee demo task-1
+
+Welcome to the instructions for task-1! Complete the exercises listed below and
+submit the results by pushing them to your repository.
+
+### Exercise 1
+
+Write a program `hello.py` that prints "Hello, world!" to standard output.
+
+### Exercise 2
+
+Write another program `add.py` that prompts the user for two numbers and prints
+the sum of those numbers to standard output.