题解 | #汽水瓶#
汽水瓶
https://www.nowcoder.com/practice/fe298c55694f4ed39e256170ff2c205f
using System;
public class Program
{
public static void Main()
{
string line;
while ((line = System.Console.ReadLine ()) != null)
{
int num=int.Parse(line);
if(num==0) break;
int res=0;int yu=0;
while(num>2)
{
res+=num/3; //10/3 4/3 3/3
num=num/3+num%3; //3+1 1+1 1+0
if(num==2) num++;//这可以借瓶子 就离大谱
}
Console.WriteLine(res);
}
}
}