1538G · Gift Set

Problem: Polycarp has $x$ of red and $y$ of blue candies. Using them, he wants to make gift sets. Each gift set contains either $a$ red candies and $b$ blue candies, or $a$ blue candies and $b$ red candies. Any candy can belong to at most one gift set.

Help Polycarp to find the largest number of gift sets he can create.

For example, if $x = 10$, $y = 12$, $a = 5$, and $b = 2$, then Polycarp can make three gift sets:

• In the first set there will be $5$ red candies and $2$ blue candies;
• In the second set there will be $5$ blue candies and $2$ red candies;
• In the third set will be $5$ blue candies and $2$ red candies.

Note that in this example there is one red candy that Polycarp does not use in any gift set.

Input Format: The first line contains an integer $t$ ($1 \le t \le 10^4$). Then $t$ test cases follow.

Each test case consists of a single string containing four integers $x$, $y$, $a$, and $b$ ($1 \le x, y, a, b \le 10^9$).

Output Format: For each test case, output one number — the maximum number of gift sets that Polycarp can make.