What is the "theoretical qualifying possibility" of the national football team?

If you want to qualify, you must meet some conditions. In addition to your own victory, you have to look at the faces of others.

It is very unlikely that these conditions can be realized at the same time. I'm sorry I can't calculate the specific value, but it must be greater than 0.

Not engaged in scientific research, there is no need to be so rigorous, so it is described as "theoretically possible", which fans generally understand.