买桃问题

int eat, taohe;
Console.Write("请输入金额(元)：");
int input = int.Parse(Console.ReadLine());
eat =input / 3;
taohe = eat;
while (taohe >= 3)
{
int huanqu= taohe / 3;
int shenyu = taohe % 3;
eat += huanqu;
taohe = huanqu + shenyu;
}

Console.Write("最多可以吃到"+eat+"个桃子");