{"problem":{"name":"Tak and Hotels (ABC Edit)","description":{"content":"There is a hotel with the following accommodation fee: *   $X$ yen (the currency of Japan) per night, for the first $K$ nights *   $Y$ yen per night, for the $(K+1)$\\-th and subsequent nights Tak is","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc044_a"},"statements":[{"statement_type":"Markdown","content":"There is a hotel with the following accommodation fee:\n\n*   $X$ yen (the currency of Japan) per night, for the first $K$ nights\n*   $Y$ yen per night, for the $(K+1)$\\-th and subsequent nights\n\nTak is staying at this hotel for $N$ consecutive nights. Find his total accommodation fee.\n\n## Constraints\n\n*   $1 \\leq N, K \\leq 10000$\n*   $1 \\leq Y < X \\leq 10000$\n*   $N,\\,K,\\,X,\\,Y$ are integers.\n\n## Input\n\nThe input is given from Standard Input in the following format:\n\n$N$\n$K$\n$X$\n$Y$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc044_a","tags":[],"sample_group":[["5\n3\n10000\n9000","48000\n\nThe accommodation fee is as follows:\n\n*   $10000$ yen for the $1$\\-st night\n*   $10000$ yen for the $2$\\-nd night\n*   $10000$ yen for the $3$\\-rd night\n*   $9000$ yen for the $4$\\-th night\n*   $9000$ yen for the $5$\\-th night\n\nThus, the total is $48000$ yen."],["2\n3\n10000\n9000","20000"]],"created_at":"2026-03-03 11:01:13"}}