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CCF 2017-03-1 分蛋糕.html
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2019-08-12
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<span class="page-pv"><i class="fa fa-file-o"></i> 阅读量
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476
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1
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<h2 id="CCF-2017-03-1-分蛋糕"><a href="#CCF-2017-03-1-分蛋糕" class="headerlink" title="CCF 2017-03-1 分蛋糕"></a>CCF 2017-03-1 分蛋糕</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> 小明今天生日，他有<em>n</em>块蛋糕要分给朋友们吃，这<em>n</em>块蛋糕（编号为1到<em>n</em>）的重量分别为<em>a</em>1, <em>a</em>2, …, <em>an</em>。小明想分给每个朋友至少重量为<em>k</em>的蛋糕。小明的朋友们已经排好队准备领蛋糕，对于每个朋友，小明总是先将自己手中编号最小的蛋糕分给他，当这个朋友所分得蛋糕的重量不到<em>k</em>时，再继续将剩下的蛋糕中编号最小的给他，直到小明的蛋糕分完或者这个朋友分到的蛋糕的总重量大于等于<em>k</em>。<br> 请问当小明的蛋糕分完时，总共有多少个朋友分到了蛋糕。</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> 输入的第一行包含了两个整数<em>n</em>, <em>k</em>，意义如上所述。<br> 第二行包含<em>n</em>个正整数，依次表示<em>a</em>1, <em>a</em>2, …, <em>an</em>。</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> 输出一个整数，表示有多少个朋友分到了蛋糕。</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><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">6 9</span><br><span class="line">2 6 5 6 3 5</span><br></pre></td></tr></table></figure>
<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><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">3</span><br></pre></td></tr></table></figure>
<h4 id="样例说明"><a href="#样例说明" class="headerlink" title="样例说明"></a>样例说明</h4><p> 第一个朋友分到了前3块蛋糕，第二个朋友分到了第4、5块蛋糕，第三个朋友分到了最后一块蛋糕。</p>
<h4 id="评测用例规模与约定"><a href="#评测用例规模与约定" class="headerlink" title="评测用例规模与约定"></a>评测用例规模与约定</h4><p> 对于所有评测用例，1 ≤ <em>n</em> ≤ 1000，1 ≤ <em>k</em> ≤ 10000，1 ≤ <em>ai</em> ≤ 1000。</p>
<h3 id="思路"><a href="#思路" class="headerlink" title="思路"></a>思路</h3><p>不是难题，甚至可以不用数组，直接在输入的时候进行一步判断，sum代表当个人拿到的蛋糕，num代表人数，最后需要判断一下sum是否为0.</p>
<h3 id="代码"><a href="#代码" class="headerlink" title="代码"></a>代码</h3><figure class="highlight c++"><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><span class="line">26</span><br><span class="line">27</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">#<span class="meta-keyword">include</span><span class="meta-string"><iostream></span></span></span><br><span class="line"><span class="keyword">using</span> <span class="keyword">namespace</span> <span class="built_in">std</span>;</span><br><span class="line"></span><br><span class="line"><span class="function"><span class="keyword">int</span> <span class="title">main</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">int</span> n,k;</span><br><span class="line"> <span class="built_in">cin</span>>>n>>k;</span><br><span class="line"> <span class="keyword">int</span> a;</span><br><span class="line"> <span class="keyword">int</span> num=<span class="number">0</span>;</span><br><span class="line"> <span class="keyword">int</span> sum=<span class="number">0</span>;</span><br><span class="line"> <span class="keyword">for</span>(<span class="keyword">int</span> i=<span class="number">0</span>;i<n;i++)</span><br><span class="line"> {</span><br><span class="line"> <span class="built_in">cin</span>>>a;</span><br><span class="line"> sum+=a;</span><br><span class="line"> <span class="keyword">if</span>(sum>=k)</span><br><span class="line"> {</span><br><span class="line"> num++;</span><br><span class="line"> sum=<span class="number">0</span>;</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">if</span>(sum><span class="number">0</span>)</span><br><span class="line"> {</span><br><span class="line"> num++;</span><br><span class="line"> }</span><br><span class="line"> <span class="built_in">cout</span><<num;</span><br><span class="line"> <span class="keyword">return</span> <span class="number">0</span>;</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-2017-03-1-分蛋糕"><span class="nav-number">1.</span> <span class="nav-text">CCF 2017-03-1 分蛋糕</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="#样例说明"><span class="nav-number">1.1.6.</span> <span class="nav-text">样例说明</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#评测用例规模与约定"><span class="nav-number">1.1.7.</span> <span class="nav-text">评测用例规模与约定</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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