Code Solution: Kill the Monster solution|educational codeforces round 122 (rated for div 2)

C. Kill the Monster

Monocarp is playing a computer game. In this game, his character fights different monsters.

A fight between a character and a monster goes as follows. Suppose the character initially has health $h_{C}$ and attack $d_{C}$ ; the monster initially has health $h_{M}$ and attack $d_{M}$ . The fight consists of several steps:

the character attacks the monster, decreasing the monster's health by $d_{C}$ ;
the monster attacks the character, decreasing the character's health by $d_{M}$ ;
the character attacks the monster, decreasing the monster's health by $d_{C}$ ;
the monster attacks the character, decreasing the character's health by $d_{M}$ ;
and so on, until the end of the fight.

The fight ends when someone's health becomes non-positive (i. e. $0$ or less). If the monster's health becomes non-positive, the character wins, otherwise the monster wins.

Monocarp's character currently has health equal to $h_{C}$ and attack equal to $d_{C}$ . He wants to slay a monster with health equal to $h_{M}$ and attack equal to $d_{M}$ . Before the fight, Monocarp can spend up to $k$ coins to upgrade his character's weapon and/or armor; each upgrade costs exactly one coin, each weapon upgrade increases the character's attack by $w$ , and each armor upgrade increases the character's health by $a$ .

Can Monocarp's character slay the monster if Monocarp spends coins on upgrades optimally?

Input

The first line contains one integer $t$ ( $1 \leq t \leq 5 \cdot 10^{4}$ ) — the number of test cases. Each test case consists of three lines:

The first line contains two integers $h_{C}$ and $d_{C}$ ( $1 \leq h_{C} \leq 10^{15}$ ; $1 \leq d_{C} \leq 10^{9}$ ) — the character's health and attack;

The second line contains two integers $h_{M}$ and $d_{M}$ ( $1 \leq h_{M} \leq 10^{15}$ ; $1 \leq d_{M} \leq 10^{9}$ ) — the monster's health and attack;

The third line contains three integers $k$ , $w$ and $a$ ( $0 \leq k \leq 2 \cdot 10^{5}$ ; $0 \leq w \leq 10^{4}$ ; $0 \leq a \leq 10^{10}$ ) — the maximum number of coins that Monocarp can spend, the amount added to the character's attack with each weapon upgrade, and the amount added to the character's health with each armor upgrade, respectively.

The sum of $k$ over all test cases does not exceed $2 \cdot 10^{5}$ .

Output

For each test case, print YES if it is possible to slay the monster by optimally choosing the upgrades. Otherwise, print

Note

In the first example, Polycarp can spend one coin to upgrade weapon (damage will be equal to $5$ ), then health during battle will change as follows: $(h_{C}, h_{M}) = (25, 9) \to (25, 4) \to (5, 4) \to (5, - 1)$ . The battle ended with Polycarp's victory.