It's expensive to get 1st place in Ino's flower event $1 = 1 Flower you'll need a certain amount of flowers to even be put on the leaderboard I think it's 300? I can't remember I think it changes but if you do get first place you get to choose really good ninjas out of the reward, if you were to do this event I recommend waiting until the last day to see if anyone else is doing it and see if you can afford it.