#### Жишээ тэстүүд

##### Оролт
2 4
7 9

##### Гаралт
2

##### Оролт
3 8
17 15 19

##### Гаралт
5

##### Оролт
2 2
99 100

##### Гаралт
20


## Тэмдэглэл

In the first test case the optimal strategy is as follows. Petya has to improve the first skill to 10 by spending 3 improvement units, and the second skill to 10, by spending one improvement unit. Thus, Petya spends all his improvement units and the total rating of the character becomes equal to $lfloor frac{100}{10} rfloor + lfloor frac{100}{10} rfloor = 10 + 10 =$ 20.

In the second test the optimal strategy for Petya is to improve the first skill to 20 (by spending 3 improvement units) and to improve the third skill to 20 (in this case by spending 1 improvement units). Thus, Petya is left with 4 improvement units and he will be able to increase the second skill to 19 (which does not change the overall rating, so Petya does not necessarily have to do it). Therefore, the highest possible total rating in this example is .

In the third test case the optimal strategy for Petya is to increase the first skill to 100 by spending 1 improvement unit. Thereafter, both skills of the character will be equal to 100, so Petya will not be able to spend the remaining improvement unit. So the answer is equal to .