Problem A: n! 的精确值

Problem A: n! 的精确值

Time Limit: 1 Sec  Memory Limit: 128 MB
Submit: 31  Solved: 13
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Description

输入 n，输出 n! 的精确值，n!=1×2×3×…×n，1<n<250

Input



Sample Input Copy 

100

Sample Output Copy 

93326215443944152681699238856266700490715968264381621468592963895217599993229915608941463976156518286253697920827223758251185210916864000000000000000000000000
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