[Solution] Whatsapp Messages CodeChef Solution | CodeChef Problem Solution 2022

[Solution] Whatsapp Messages CodeChef Solution | CodeChef Problem Solution 2022

Chef recently installed Whatsapp on his mobile device. Currently, he has no unread messages.

Every hour, he receives X$X$ messages and he is able to read Y$Y$ messages out of them. After some time Chef notices that he has several unread messages.

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Can you tell him exactly how many unread messages Chef has after Z$Z$ hours have passed?

Input Format

• The first line of input will contain a single integer T$T$, denoting the number of test cases. The description of the test cases follows.
• Each test case consists of a single line containing three space-separated integers X,Y,$X,Y,$ and Z$, denoting the number of messages Chef receives every hour, the number \

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• of messages he reads every hour, the and number of hours that have passed, respectively.

Output Format

• For each test case, output on a new line a single integer denoting the number of unread messages after Z$Z$ hours.

Constraints

• 1≤T≤2⋅104$1\le T\le 2\cdot {10}^4$
• 1≤Y≤X≤50$1\le Y\le X\le 50$
• 1≤Z≤10