汽水瓶

亦凉 2022-08-05 12:06 182阅读 0赞

<table style="margin:0px; padding:0px; list-style-type:none; border-spacing:0px; border-collapse:collapse; max-width:100%; background-color:rgb(219,222,223); font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif; width:968px; border:0px; empty-cells:show; color:rgb(51,51,51); font-size:14px; line-height:20px"> 
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   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; border-right-style:solid; border-right-width:1px; border-right-color:rgb(238,238,238); font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> 描述:&nbsp;</td> 
   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> <p style="margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px; list-style-type:none"> <span style="margin:0px; padding:0px; list-style-type:none">有这样一道智力题：“某商店规定：三个空汽水瓶可以换一瓶汽水。小张手上有十个空汽水瓶，她最多可以换多少瓶汽水喝？”答案是5瓶，方法如下：先用9个空瓶子换3瓶汽水，喝掉3瓶满的，喝完以后4个空瓶子，用3个再换一瓶，喝掉这瓶满的，这时候剩2个空瓶子。然后你让老板先借给你一瓶汽水，喝掉这瓶满的，喝完以后用3个空瓶子换一瓶满的还给老板。如果小张手上有n个空汽水瓶，最多可以换多少瓶汽水喝？</span><br style="margin:0px; padding:0px; list-style-type:none"> </p> &nbsp;</td> 
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   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; border-right-style:solid; border-right-width:1px; border-right-color:rgb(238,238,238); font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> 知识点:</td> 
   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> &nbsp;循环&nbsp;</td> 
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   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; border-right-style:solid; border-right-width:1px; border-right-color:rgb(238,238,238); font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> 题目来源:</td> 
   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> &nbsp;内部整理&nbsp;</td> 
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   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; border-right-style:solid; border-right-width:1px; border-right-color:rgb(238,238,238); font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> 练习阶段:</td> 
   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> &nbsp;中级&nbsp;</td> 
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   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; border-right-style:solid; border-right-width:1px; border-right-color:rgb(238,238,238); font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> 运行时间限制:</td> 
   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> 无限制</td> 
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   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; border-right-style:solid; border-right-width:1px; border-right-color:rgb(238,238,238); font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> 内存限制:</td> 
   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> 无限制</td> 
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   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; border-right-style:solid; border-right-width:1px; border-right-color:rgb(238,238,238); font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> 输入:</td> 
   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> &nbsp; <p style="margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px; list-style-type:none"> <span style="margin:0px; padding:0px; list-style-type:none">输入文件最多包含10组测试数据，每个数据占一行，仅包含一个正整数n（1&lt;=n&lt;=100），表示小张手上的空汽水瓶数。n=0表示输入结束，你的程序不应当处理这一行。</span><br style="margin:0px; padding:0px; list-style-type:none"> </p> &nbsp;</td> 
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   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; border-right-style:solid; border-right-width:1px; border-right-color:rgb(238,238,238); font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> 输出:</td> 
   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> &nbsp; <p style="margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px; list-style-type:none"> <span style="margin:0px; padding:0px; list-style-type:none">对于每组测试数据，输出一行，表示最多可以喝的汽水瓶数。如果一瓶也喝不到，输出0。</span><br style="margin:0px; padding:0px; list-style-type:none"> </p> &nbsp;</td> 
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   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; border-right-style:solid; border-right-width:1px; border-right-color:rgb(238,238,238); font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> 样例输入:</td> 
   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> <pre style="margin-top:0px; margin-bottom:10px; padding:9.5px; list-style-type:none; white-space:pre-wrap; word-wrap:break-word; line-height:1.42857143; overflow:auto; font-family:Menlo,Monaco,Consolas,'Courier New',monospace; font-size:13px; word-break:break-all; background-color:rgb(245,245,245); border:1px solid rgb(204,204,204)">3
10
81
0

</pre> </td> 
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   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; border-right-style:solid; border-right-width:1px; border-right-color:rgb(238,238,238); font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> 样例输出:</td> 
   <td style="margin:0px; padding:6px 3px 3px; list-style-type:none; word-break:break-all; word-wrap:break-word; font-family:'Microsoft YaHei',Arial,Helvetica,sans-serif!important; font-size:14px; border-bottom-style:solid; border-bottom-width:1px; border-bottom-color:rgb(238,238,238)"> <pre style="margin-top:0px; margin-bottom:10px; padding:9.5px; list-style-type:none; white-space:pre-wrap; word-wrap:break-word; line-height:1.42857143; overflow:auto; font-family:Menlo,Monaco,Consolas,'Courier New',monospace; font-size:13px; word-break:break-all; background-color:rgb(245,245,245); border:1px solid rgb(204,204,204)">1
5
40

</pre> </td> 
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两种方式处理，注意下面代码中输入不确定的n个数以0结束输入的方法：

//方法一：找到规律就这么简单n/2
    void fun1() {
    	int n;
    	//注意这里输入不确定个整数，以0结束的输入方式
    	while (cin >> n, n) {
    		if (n < 0)
    			break;
    		cout << n / 2 << endl;
    	}
    }
    
    //方法二：
    int fun2(int n) {
    	int remainder = 0;
    	int divisor = 0;
    	int count = 0;
    	while (n / 3) {
    		divisor = n / 3;
    		remainder = n % 3;
    		count += divisor;
    		n = divisor + remainder;
    	}
    	//如果最后还剩两个空瓶子，可以向老板借一个
    	//空瓶子再买一瓶
    	if (n % 3 == 2)
    		count += 1;
    	return count;
    }
    int main() {
    	//fun1();
    	int n;
    	while (cin >> n) {
    		if (n != 0) {
    			cout << fun2() << endl;
    		}
    		else
    			break;
    	}
    	return 0;
    }