##### Problem statement You are handed `a` apples and `b` oranges by Rohan. He wants to organize the fruits into baskets which he will sell later on. However, there are some rules for these baskets, - each basket must have **exactly** 4 fruits. - each basket should have **at least one** apple and **at least one** orange. Rohan wants to know how many baskets can be created from `a` apples and `b` oranges. Help him find the maximum number of baskets that can be formed. **Example #1** _Input:_ ``` 4 4 ``` _Output:_ ``` 2 ``` _Explanation:_ ```(with 4 apples and 4 oranges, 2 teams of 'apple x2 orange x2' can be formed)``` **Example #2** _Input:_ ``` 9 1 ``` _Output:_ ``` 1 ``` _Explanation:_ ```(with 9 apples and 1 orange, only 1 team of 'apple x3 orange' can be formed)```

Input:
4 4

Output:
2

Input:
9 1

Output:
1

Input:
8 2

Output:
2

Input:
1000000000 1000000000

Output:
500000000

Input:
2 3

Output:
1

Input:
16 13

Output:
7