# DCP-277: Boshir Mishtanno Back to All Problems

Easy Math > Basic Math

"***Boshir Mishtanno***" is a famous sweet's shop in *Shikaripara Bazar*. Younus Madbor is a great man lives in neighbouring village. He came to the shop with his grandson Muhammad to buy some sweets. Muhammad likes sweets a lot, so he told his grandpa to buy a full dish of sweets. On an empty dish **"R"** sweets can be placed in a single column and **"C"** sweets in a single row. The dish is rectangular and Muhammad wants the maximum number of sweets can be placed on it. So a sweet can be placed on another sweets when possible as showed in the figure. ![Figure][1] Now, your task is to calculate the total cost of sweets that Younus Madbor had to expend if the cost of a sweet is **15** taka. Input: ------ Input starts with an integer **T (1<=100)**, denoting the number of test cases. Each case contains two integers **R** and **C** separated by a single space **(1 ≤ R, C ≤ 1000).** Output: ------- For each case of input, output the case number followed by the total cost. See sample input and output for more clarification. Sample Input ------------ 3 3 3 4 2 4 4 Sample Output ------------- Case 1: 210 Case 2: 165 Case 3: 450 [1]: https://s3-ap-southeast-1.amazonaws.com/devskillimagestorage/questionimages/74144737-c04b-c49d-83f1-08d45dae8785_bb3be9456fbd417ca4a6fe62cb4e4c1d_W200xH155.png

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