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CCF 201809-1 卖菜.html
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<h1 class="post-title" itemprop="name headline">CCF 201809-1 卖菜</h1>
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<span class="post-meta-item-text">发表于</span>
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2019-07-17
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<span class="page-pv"><i class="fa fa-file-o"></i> 阅读量
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<span class="post-meta-item-text">字数统计:</span>
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561
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<span class="post-meta-item-text">阅读时长 ≈</span>
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2
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<h2 id="CCF-201809-1-卖菜"><a href="#CCF-201809-1-卖菜" class="headerlink" title="CCF 201809-1 卖菜"></a>CCF 201809-1 卖菜</h2><h3 id="题目"><a href="#题目" class="headerlink" title="题目"></a>题目</h3><h4 id="问题描述"><a href="#问题描述" class="headerlink" title="问题描述"></a>问题描述</h4><p>在一条街上有n个卖菜的商店，按1至n的顺序排成一排，这些商店都卖一种蔬菜。<br>第一天，每个商店都自己定了一个价格。店主们希望自己的菜价和其他商店的一致，第二天，每一家商店都会根据他自己和相邻商店的价格调整自己的价格。具体的，每家商店都会将第二天的菜价设置为自己和相邻商店第一天菜价的平均值（用去尾法取整）。<br>注意，编号为1的商店只有一个相邻的商店2，编号为n的商店只有一个相邻的商店n-1，其他编号为i的商店有两个相邻的商店i-1和i+1。<br>给定第一天各个商店的菜价，请计算第二天每个商店的菜价。</p>
<h4 id="输入格式"><a href="#输入格式" class="headerlink" title="输入格式"></a>输入格式</h4><p>输入的第一行包含一个整数n，表示商店的数量。<br>第二行包含n个整数，依次表示每个商店第一天的菜价。</p>
<h4 id="输出格式"><a href="#输出格式" class="headerlink" title="输出格式"></a>输出格式</h4><p>输出一行，包含n个正整数，依次表示每个商店第二天的菜价。</p>
<h4 id="样例输入"><a href="#样例输入" class="headerlink" title="样例输入"></a>样例输入</h4><pre><code>8
4 1 3 1 6 5 17 9</code></pre><h4 id="样例输出"><a href="#样例输出" class="headerlink" title="样例输出"></a>样例输出</h4><pre><code>2 2 1 3 4 9 10 13</code></pre><h4 id="数据规模和约定"><a href="#数据规模和约定" class="headerlink" title="数据规模和约定"></a>数据规模和约定</h4><p>对于所有评测用例，2 ≤ n ≤ 1000，第一天每个商店的菜价为不超过10000的正整数。</p>
<h3 id="思路："><a href="#思路：" class="headerlink" title="思路："></a>思路：</h3><p>水题，设置数组存放价格，考虑到首尾计算方式不同即可。而且c++本来除法就能去尾，输入输出，行了。</p>
<p>虽然大一就过了ccf，但是还是打算重新刷一遍题，就当写着玩了，会慢慢更题解和思路，但是那种文本处理题八成不会更，太麻烦了。</p>
<h3 id="代码："><a href="#代码：" class="headerlink" title="代码："></a>代码：</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br></pre></td><td class="code"><pre><span class="line">#include<iostream></span><br><span class="line"></span><br><span class="line">using namespace std;</span><br><span class="line"></span><br><span class="line">int main()</span><br><span class="line">{</span><br><span class="line"> int n;</span><br><span class="line"> cin>>n;</span><br><span class="line"> int a[n],b[n]; </span><br><span class="line"> for(int i = 0; i < n; i++)</span><br><span class="line"> {</span><br><span class="line"> cin>>a[i];</span><br><span class="line"> }</span><br><span class="line"> b[0] = (a[0] + a[1])/2;</span><br><span class="line"> b[n-1] = (a[n-2] + a[n-1])/2;</span><br><span class="line"> for(int i = 1; i < n-1; i++)</span><br><span class="line"> {</span><br><span class="line"> b[i] = (a[i-1] + a[i] + a[i+1])/3;</span><br><span class="line"> }</span><br><span class="line"> for(int i = 0; i < n; i++)</span><br><span class="line"> {</span><br><span class="line"> cout<<b[i]<<" ";</span><br><span class="line"> }</span><br><span class="line"> return 0;</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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<div class="post-toc-content"><ol class="nav"><li class="nav-item nav-level-2"><a class="nav-link" href="#CCF-201809-1-卖菜"><span class="nav-number">1.</span> <span class="nav-text">CCF 201809-1 卖菜</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#题目"><span class="nav-number">1.1.</span> <span class="nav-text">题目</span></a><ol class="nav-child"><li class="nav-item nav-level-4"><a class="nav-link" href="#问题描述"><span class="nav-number">1.1.1.</span> <span class="nav-text">问题描述</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#输入格式"><span class="nav-number">1.1.2.</span> <span class="nav-text">输入格式</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#输出格式"><span class="nav-number">1.1.3.</span> <span class="nav-text">输出格式</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#样例输入"><span class="nav-number">1.1.4.</span> <span class="nav-text">样例输入</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#样例输出"><span class="nav-number">1.1.5.</span> <span class="nav-text">样例输出</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#数据规模和约定"><span class="nav-number">1.1.6.</span> <span class="nav-text">数据规模和约定</span></a></li></ol></li><li class="nav-item nav-level-3"><a class="nav-link" href="#思路："><span class="nav-number">1.2.</span> <span class="nav-text">思路：</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#代码："><span class="nav-number">1.3.</span> <span class="nav-text">代码：</span></a></li></ol></li></ol></div>
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