Introduction - If you have any usage issues, please Google them yourself
Input several centesimal system performance, the output of the five grade marking system corresponding to the input end result, after the five output respectively the number of section. The five grade marking system performance with the letters A, B, C, D and E said centesimal system performance of 100 ~ 90, 89 ~ 80, 79 ~ 70, 69 ~ sixty, 59 ~ 0