deploy: 73e5c69

Author: yanglbme

en/lc/1880/index.html

@@ -86073,7 +86073,7 @@ <h3 id="solution-1-dynamic-programming">Solution 1: Dynamic Programming</h3>
 <p>Where <span class="arithmatex">\(\lceil x\rceil\)</span> represents rounding <span class="arithmatex">\(x\)</span> up. It should be noted that since we need to ensure that exactly <span class="arithmatex">\(j\)</span> rest times are skipped, we must have <span class="arithmatex">\(j\le i\)</span>; moreover, if <span class="arithmatex">\(j=0\)</span>, no rest time can be skipped.</p>
 <p>Due to the possible precision error brought by floating-point operations and rounding up, we introduce a constant <span class="arithmatex">\(eps = 10^{-8}\)</span> to represent a very small positive real number. We subtract <span class="arithmatex">\(eps\)</span> before rounding the floating-point number, and finally, when comparing <span class="arithmatex">\(f[n][j]\)</span> and <span class="arithmatex">\(hoursBefore\)</span>, we need to add <span class="arithmatex">\(eps\)</span>.</p>
 <p>The time complexity is <span class="arithmatex">\(O(n^2)\)</span>, and the space complexity is <span class="arithmatex">\(O(n^2)\)</span>, where <span class="arithmatex">\(n\)</span> is the number of roads.</p>
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@@ -86124,38 +86124,6 @@ <h3 id="solution-1-dynamic-programming">Solution 1: Dynamic Programming</h3>
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-<span class="normal">15</span></pre></div></td><td class="code"><div><pre><span></span><code><span class="k">class</span><span class="w"> </span><span class="nc">Solution</span><span class="p">:</span>
-    <span class="k">def</span><span class="w"> </span><span class="nf">minSkips</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dist</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="nb">int</span><span class="p">],</span> <span class="n">speed</span><span class="p">:</span> <span class="nb">int</span><span class="p">,</span> <span class="n">hoursBefore</span><span class="p">:</span> <span class="nb">int</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">int</span><span class="p">:</span>
-        <span class="n">n</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">dist</span><span class="p">)</span>
-        <span class="n">f</span> <span class="o">=</span> <span class="p">[[</span><span class="n">inf</span><span class="p">]</span> <span class="o">*</span> <span class="p">(</span><span class="n">n</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span> <span class="k">for</span> <span class="n">_</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">n</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)]</span>
-        <span class="n">f</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="mi">0</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span>
-        <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">x</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">dist</span><span class="p">,</span> <span class="mi">1</span><span class="p">):</span>
-            <span class="k">for</span> <span class="n">j</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">i</span> <span class="o">+</span> <span class="mi">1</span><span class="p">):</span>
-                <span class="k">if</span> <span class="n">j</span> <span class="o">&lt;</span> <span class="n">i</span><span class="p">:</span>
-                    <span class="n">f</span><span class="p">[</span><span class="n">i</span><span class="p">][</span><span class="n">j</span><span class="p">]</span> <span class="o">=</span> <span class="nb">min</span><span class="p">(</span><span class="n">f</span><span class="p">[</span><span class="n">i</span><span class="p">][</span><span class="n">j</span><span class="p">],</span> <span class="p">((</span><span class="n">f</span><span class="p">[</span><span class="n">i</span> <span class="o">-</span> <span class="mi">1</span><span class="p">][</span><span class="n">j</span><span class="p">]</span> <span class="o">+</span> <span class="n">x</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span> <span class="o">//</span> <span class="n">speed</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span> <span class="o">*</span> <span class="n">speed</span><span class="p">)</span>
-                <span class="k">if</span> <span class="n">j</span><span class="p">:</span>
-                    <span class="n">f</span><span class="p">[</span><span class="n">i</span><span class="p">][</span><span class="n">j</span><span class="p">]</span> <span class="o">=</span> <span class="nb">min</span><span class="p">(</span><span class="n">f</span><span class="p">[</span><span class="n">i</span><span class="p">][</span><span class="n">j</span><span class="p">],</span> <span class="n">f</span><span class="p">[</span><span class="n">i</span> <span class="o">-</span> <span class="mi">1</span><span class="p">][</span><span class="n">j</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">+</span> <span class="n">x</span><span class="p">)</span>
-        <span class="k">for</span> <span class="n">j</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">n</span> <span class="o">+</span> <span class="mi">1</span><span class="p">):</span>
-            <span class="k">if</span> <span class="n">f</span><span class="p">[</span><span class="n">n</span><span class="p">][</span><span class="n">j</span><span class="p">]</span> <span class="o">&lt;=</span> <span class="n">hoursBefore</span> <span class="o">*</span> <span class="n">speed</span><span class="p">:</span>
-                <span class="k">return</span> <span class="n">j</span>
-        <span class="k">return</span> <span class="o">-</span><span class="mi">1</span>
-</code></pre></div></td></tr></table></div>
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