與正確輸出不相符(line:1)
您的答案為: 100 things taken 50 at a time is 100891344545564193334812497256 exa ...略
正確答案為: 100 things taken 50 at a time is 12824127363633732944 exactly.

C(100,50)=100*99*98*……*51/(50*49*48*……*1)

=(100/50)*(99/49)*……(76/26)*(75/25)*(74/24)*……*(51/1)

>2^25*3^25