package cn.queai;
import java.math.BigInteger;
public class Shuai233 {
public static void main(String[] args) {
Shuai233 g = new Shuai233();
g.mul(100);
System.out.println(g.bigMul);
}
BigInteger bigMul = new BigInteger("1");
public int mul(int big) {
if (big == 1) {
return 1;
} else {
BigInteger big2 = new BigInteger(big + "");
bigMul = bigMul.multiply(big2);
return mul(big - 1);
}
}
}