This technology give some probability to museum that we can make 3-star artifacts.
Before we research done,we have
1-star: a% to appear, 2-star: (100-a)% to appear
When we research done, we have
1-star: (a-5)% to appear,2-star: (100-a)% to appear,3-star:5% to appear,the total size is 100,not...