【题目描述】
小伟报名参加中央电视台的智力大冲浪节目。本次挑战赛吸引了众多参赛者，主持人为了表彰大家的勇气，先奖励每个参赛者m元。先不要太高兴！因为这些钱还不一定都是你的。接下来主持人宣布了比赛规则：
首先，比赛时间分为n个时段(n≤500)，它又给出了很多小游戏，每个小游戏都必须在规定期限ti前完成(1≤ti≤n)。如果一个游戏没能在规定期限前完成，则要从奖励费m元中扣去一部分钱wi，wi为自然数，不同的游戏扣去的钱是不一样的。
,【Descr iption】 Xiaowei subject enrolled in the intellectual CCTV shows great surfing. The Challenge attracted a large number of participants, in order to host the U.S. in recognition of courage, to reward participants m each element. Should not be too pleased! Not necessarily because they are paying the money for you. Then the host announced the game rules: First of all, the game is divided into n time periods (n ≤ 500), it gives a lot of small games, each game must be completed before the ti period (1 ≤ ti ≤ n). If a game is not completed before the set time period, the element m from the incentive fee deduct the money as part of wi, wi for the natural number, different deduction of the Games is not the same as money.