8. (10 points) Fill each cell with a number from $1 \sim 5$, such that no number repeats in any row or column. Each “$L$”-shaped large cell spans two rows and two columns, and the number in the circle indicates the sum of the numbers in the two adjacent cells (as shown in the example where numbers $1 \sim 4$ are filled in, and in the middle figure, the four cells from left to right in the 3rd row are $3,4,1,2$). Therefore, the five-digit number formed by the five numbers in the bottom row from left to right is $\qquad$
【Solution】Solution: In Figure 1, the top-left corner $8=3+5$, if 5 is on the left, then the 9 in the 4th row of the first column cannot be determined, so it must be 3 on the left and 5 on the right. Similarly, for the bottom-right corner $4=1+3$, if 1 is on the left, the 4th and 5th rows of the 4th column cannot be determined, so it must be 3 on the left and 1 on the right.

In Figure 2, the sum of the 2nd row and the 6th row in the first column is 3, which can only be 1 and 2. Since the 6th row already has a 1, the 2nd row of the first column is 1, and the 6th row is 2. Similarly, the 1st row of the 6th column is 2, and the 4th row is 3.

In Figure 3, the first row still has the numbers 1 and 4. If 1 is in the 4th column, then 7 cannot be determined, so the 3rd column is 1, and the 4th column is 4. The 2nd row, 4th column is 3, the 4th row, 5th column is 2, and the 4th row, 4th column is 1. Since 4 already exists in the 2nd row, the 6th column, 2nd row is 5, and the 4th row is 5. From this, we can deduce that the 1st column, 4th row is 5, and the 5th row is 4.

In Figure 4, the rest can be filled in using this method, so the answer is 24531.