Problem B: [Python入门语法]组合数计算
Memory Limit:128 MB
Time Limit:1 S
Judge Style:Text Compare
Creator:
Submit:686
Solved:17
Description
C = K!/(R!*(K-R)!)(K > R > 0),输入R、K,求C
Input
输入共2行,2个正整数,R和K
Output
输出C
Sample Input Copy
3
5
Sample Output Copy
10