homewoke

import java.util.*;
class work{
public static void main (String args[]){
 
Scanner reader=new Scanner (System.in);
 
int mul=1;
 
while(reader.hasNextInt()){
 
int x=reader.nextInt();
 
mul=mul*x;
 
}
 
System.out.printf("%d个数的积为%f\n",mul);
 
}
 
}