Consider the following C++ code:

Below are a few sample outputs obtained when this program is executed:

Sample Output 1:

Sample Output 2:

Sample Output 3:

Sample Output 4:

You will observe that there are two problems in the outputs:

1. Output statements from different threads are interleaved.

2. Multiple threads are sometimes printing the same number, and some numbers are not being printed at all.

Explain how you would solve the above problems. If you wish, you may include relevant code snippets in your explanation.