求10000以内n的阶乘
描述
求10000以内n的阶乘。
输入
只有一行输入,整数n(0<=n<=10000)
输出
一行,即n!的值。
样例
100
样例输出
93326215443944152681699238856266700490715968264381621468592963895217599993229915608941463976156518286253697920827223758251185210916864000000000000000000000000
代码
import java
.util
.*
;
import java
.math
.*
;
public class Main
{
public static void main(String
[] args
)
{
Scanner cin
= new Scanner(System
.in
);
int n
= cin
.nextInt();
BigInteger num
= new BigInteger("1");
for (int i
= 1; i
<= n
; i
++)
num
= num
.multiply(BigInteger
.valueOf(i
));
System
.out
.println(num
.toString());
}
}
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