{"problem":{"name":"Apple","description":{"content":"A fruit store sells apples.   You may perform the following operations as many times as you want in any order: *   Buy one apple for $X$ yen (the currency in Japan). *   Buy three apples for $Y$ yen.","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc265_a"},"statements":[{"statement_type":"Markdown","content":"A fruit store sells apples.  \nYou may perform the following operations as many times as you want in any order:\n\n*   Buy one apple for $X$ yen (the currency in Japan).\n*   Buy three apples for $Y$ yen.\n\nHow much yen do you need to pay to obtain **exactly** $N$ apples?\n\n## Constraints\n\n*   $1 \\leq X \\leq Y \\leq 100$\n*   $1 \\leq N \\leq 100$\n*   All values in input are integers.\n\n## Input\n\nInput is given from Standard Input in the following format:\n\n$X$ $Y$ $N$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc265_a","tags":[],"sample_group":[["10 25 10","85\n\nBuy three apples for $25$ yen three times and one apple for $10$ yen, and you will obtain exactly $10$ apples for a total of $85$ yen.  \nYou cannot obtain exactly $10$ apples for a lower cost, so the answer is $85$ yen."],["10 40 10","100\n\nIt is optimal to buy an apple for $10$ yen $10$ times."],["100 100 2","200\n\nThe only way to obtain **exactly** $2$ apples is to buy an apple for $100$ yen twice."],["100 100 100","3400"]],"created_at":"2026-03-03 11:01:14"}}