Pat the cat

In the game, there are four levels and four kinds of cats in the game for you to pat, patting different cat takes different effect. And every level has different rules as following.Level one : Need 550 points to continue. No.1 cat will sub score by 20. No.2 cat will add score by 10. No.3 cat will add score by 50. No.4 cat will add time by 5s.Level two : Need 1350 points to continue. Notice that the No.1 cat will sub score by 50 and sub time by 5.Level three : Need 1800 points to continue. Notice that the No.1 cat will sub score by 50 and sub time by 5. The No.4 cat will add time by 3s.Level four : Need 2000 points to pass the whole game. Notice that the No.1 cat will sub score by 80 and sub time by 7. The No.4 cat will add time by 2s.