题解 | #汽水瓶#
汽水瓶
http://www.nowcoder.com/practice/fe298c55694f4ed39e256170ff2c205f
import java.util.*;
public class Main{
public static void main(String[] arg){
Scanner sc=new Scanner(System.in);
String str="";
while(!("0".equals((str=sc.nextLine())))){
int n = Integer.parseInt(str);
if(n==1){
System.out.println(0);
}else{
System.out.println(n/2);
}
}
}
}
