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<div class="title">RabbitsAndPheasantsSat.java</div> </div>
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<a href="RabbitsAndPheasantsSat_8java.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2010-2018 Google LLC</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// You may obtain a copy of the License at</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// limitations under the License.</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="keyword">import</span> <a class="code" href="namespacecom.html">com</a>.<a class="code" href="namespacecom_1_1google.html">google</a>.<a class="code" href="namespacecom_1_1google_1_1ortools.html">ortools</a>.<a class="code" href="namespacecom_1_1google_1_1ortools_1_1sat.html">sat</a>.<a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1CpModel.html">CpModel</a>;</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">import</span> <a class="code" href="namespacecom.html">com</a>.<a class="code" href="namespacecom_1_1google.html">google</a>.<a class="code" href="namespacecom_1_1google_1_1ortools.html">ortools</a>.<a class="code" href="namespacecom_1_1google_1_1ortools_1_1sat.html">sat</a>.<a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1CpSolver.html">CpSolver</a>;</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">import</span> <a class="code" href="namespacecom.html">com</a>.<a class="code" href="namespacecom_1_1google.html">google</a>.<a class="code" href="namespacecom_1_1google_1_1ortools.html">ortools</a>.<a class="code" href="namespacecom_1_1google_1_1ortools_1_1sat.html">sat</a>.<a class="code" href="enumcom_1_1google_1_1ortools_1_1sat_1_1CpSolverStatus.html">CpSolverStatus</a>;</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">import</span> <a class="code" href="namespacecom.html">com</a>.<a class="code" href="namespacecom_1_1google.html">google</a>.<a class="code" href="namespacecom_1_1google_1_1ortools.html">ortools</a>.<a class="code" href="namespacecom_1_1google_1_1ortools_1_1sat.html">sat</a>.<a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1IntVar.html">IntVar</a>;</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">import</span> <a class="code" href="namespacecom.html">com</a>.<a class="code" href="namespacecom_1_1google.html">google</a>.<a class="code" href="namespacecom_1_1google_1_1ortools.html">ortools</a>.<a class="code" href="namespacecom_1_1google_1_1ortools_1_1sat.html">sat</a>.<a class="code" href="interfacecom_1_1google_1_1ortools_1_1sat_1_1LinearExpr.html">LinearExpr</a>;</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="classRabbitsAndPheasantsSat.html"> 24</a></span> <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="classRabbitsAndPheasantsSat.html">RabbitsAndPheasantsSat</a> {</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keyword">static</span> {</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  System.loadLibrary(<span class="stringliteral">"jniortools"</span>);</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  }</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="classRabbitsAndPheasantsSat.html#af1e3a13d7cb329a3a050f1be325d6125"> 29</a></span>  <span class="keyword">public</span> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classRabbitsAndPheasantsSat.html#af1e3a13d7cb329a3a050f1be325d6125">main</a>(String[] args) <span class="keywordflow">throws</span> Exception {</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="comment">// Creates the model.</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1CpModel.html">CpModel</a> model = <span class="keyword">new</span> <a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1CpModel.html">CpModel</a>();</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="comment">// Creates the variables.</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1IntVar.html">IntVar</a> r = model.<a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1CpModel.html#a78e6aa0bcdec9be8fc0d39c46b94d851">newIntVar</a>(0, 100, <span class="stringliteral">"r"</span>);</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1IntVar.html">IntVar</a> p = model.<a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1CpModel.html#a78e6aa0bcdec9be8fc0d39c46b94d851">newIntVar</a>(0, 100, <span class="stringliteral">"p"</span>);</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="comment">// 20 heads.</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  model.<a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1CpModel.html#a0868f8bc35ae63fb326d569e50df1dea">addEquality</a>(<a class="code" href="interfacecom_1_1google_1_1ortools_1_1sat_1_1LinearExpr.html">LinearExpr</a>.<a class="code" href="interfacecom_1_1google_1_1ortools_1_1sat_1_1LinearExpr.html#a91bf9e3c160333c55934d430c4b6a763">sum</a>(<span class="keyword">new</span> <a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1IntVar.html">IntVar</a>[] {r, p}), 20);</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="comment">// 56 legs.</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  model.<a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1CpModel.html#a0868f8bc35ae63fb326d569e50df1dea">addEquality</a>(<a class="code" href="interfacecom_1_1google_1_1ortools_1_1sat_1_1LinearExpr.html">LinearExpr</a>.<a class="code" href="interfacecom_1_1google_1_1ortools_1_1sat_1_1LinearExpr.html#a3d9212f8954f9eab6a2c29fd7d5155cc">scalProd</a>(<span class="keyword">new</span> <a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1IntVar.html">IntVar</a>[] {r, p}, <span class="keyword">new</span> <span class="keywordtype">long</span>[] {4, 2}), 56);</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="comment">// Creates a solver and solves the model.</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1CpSolver.html">CpSolver</a> solver = <span class="keyword">new</span> <a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1CpSolver.html">CpSolver</a>();</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <a class="code" href="enumcom_1_1google_1_1ortools_1_1sat_1_1CpSolverStatus.html">CpSolverStatus</a> status = solver.<a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1CpSolver.html#aad90759e27de74339bfb97c3f31bc509">solve</a>(model);</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">if</span> (status == <a class="code" href="enumcom_1_1google_1_1ortools_1_1sat_1_1CpSolverStatus.html">CpSolverStatus</a>.<a class="code" href="enumcom_1_1google_1_1ortools_1_1sat_1_1CpSolverStatus.html#ad8e0d730a50b9197cbf2c80e5b946ea7">FEASIBLE</a>) {</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  System.out.println(solver.<a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1CpSolver.html#afec653ca08cdff3ec58642c199bbdb55">value</a>(r) + <span class="stringliteral">" rabbits, and "</span> + solver.<a class="code" href="classcom_1_1google_1_1ortools_1_1sat_1_1CpSolver.html#afec653ca08cdff3ec58642c199bbdb55">value</a>(p) + <span class="stringliteral">" pheasants"</span>);</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  }</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  }</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> }</div><div class="ttc" id="namespacecom_1_1google_1_1ortools_1_1sat_html"><div class="ttname"><a href="namespacecom_1_1google_1_1ortools_1_1sat.html">com.google.ortools.sat</a></div><div class="ttdef"><b>Definition:</b> <a href="AllDifferentConstraintProto_8java_source.html#l00004">AllDifferentConstraintProto.java:4</a></div></div>
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<div class="ttc" id="interfacecom_1_1google_1_1ortools_1_1sat_1_1LinearExpr_html"><div class="ttname"><a href="interfacecom_1_1google_1_1ortools_1_1sat_1_1LinearExpr.html">com.google.ortools.sat.LinearExpr</a></div><div class="ttdoc">A linear expression interface that can be parsed.</div><div class="ttdef"><b>Definition:</b> <a href="LinearExpr_8java_source.html#l00017">LinearExpr.java:17</a></div></div>
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<div class="ttc" id="classcom_1_1google_1_1ortools_1_1sat_1_1CpModel_html_a0868f8bc35ae63fb326d569e50df1dea"><div class="ttname"><a href="classcom_1_1google_1_1ortools_1_1sat_1_1CpModel.html#a0868f8bc35ae63fb326d569e50df1dea">com.google.ortools.sat.CpModel.addEquality</a></div><div class="ttdeci">Constraint addEquality(LinearExpr expr, long value)</div><div class="ttdoc">Adds.</div><div class="ttdef"><b>Definition:</b> <a href="CpModel_8java_source.html#l00153">CpModel.java:153</a></div></div>
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<div class="ttc" id="classRabbitsAndPheasantsSat_html"><div class="ttname"><a href="classRabbitsAndPheasantsSat.html">RabbitsAndPheasantsSat</a></div><div class="ttdoc">In a field of rabbits and pheasants, there are 20 heads and 56 legs.</div><div class="ttdef"><b>Definition:</b> <a href="RabbitsAndPheasantsSat_8java_source.html#l00024">RabbitsAndPheasantsSat.java:24</a></div></div>
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<div class="ttc" id="classcom_1_1google_1_1ortools_1_1sat_1_1CpSolver_html"><div class="ttname"><a href="classcom_1_1google_1_1ortools_1_1sat_1_1CpSolver.html">com.google.ortools.sat.CpSolver</a></div><div class="ttdoc">Wrapper around the SAT solver.</div><div class="ttdef"><b>Definition:</b> <a href="CpSolver_8java_source.html#l00026">CpSolver.java:26</a></div></div>
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<div class="ttc" id="classcom_1_1google_1_1ortools_1_1sat_1_1CpModel_html_a78e6aa0bcdec9be8fc0d39c46b94d851"><div class="ttname"><a href="classcom_1_1google_1_1ortools_1_1sat_1_1CpModel.html#a78e6aa0bcdec9be8fc0d39c46b94d851">com.google.ortools.sat.CpModel.newIntVar</a></div><div class="ttdeci">IntVar newIntVar(long lb, long ub, String name)</div><div class="ttdoc">Creates an integer variable with domain [lb, ub].</div><div class="ttdef"><b>Definition:</b> <a href="CpModel_8java_source.html#l00069">CpModel.java:69</a></div></div>
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<div class="ttc" id="namespacecom_html"><div class="ttname"><a href="namespacecom.html">com</a></div></div>
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<div class="ttc" id="classcom_1_1google_1_1ortools_1_1sat_1_1CpSolver_html_afec653ca08cdff3ec58642c199bbdb55"><div class="ttname"><a href="classcom_1_1google_1_1ortools_1_1sat_1_1CpSolver.html#afec653ca08cdff3ec58642c199bbdb55">com.google.ortools.sat.CpSolver.value</a></div><div class="ttdeci">long value(IntVar var)</div><div class="ttdoc">Returns the value of a variable in the last solution found.</div><div class="ttdef"><b>Definition:</b> <a href="CpSolver_8java_source.html#l00079">CpSolver.java:79</a></div></div>
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<div class="ttc" id="enumcom_1_1google_1_1ortools_1_1sat_1_1CpSolverStatus_html"><div class="ttname"><a href="enumcom_1_1google_1_1ortools_1_1sat_1_1CpSolverStatus.html">com.google.ortools.sat.CpSolverStatus</a></div><div class="ttdef"><b>Definition:</b> <a href="CpSolverStatus_8java_source.html#l00013">CpSolverStatus.java:13</a></div></div>
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<div class="ttc" id="namespacecom_1_1google_1_1ortools_html"><div class="ttname"><a href="namespacecom_1_1google_1_1ortools.html">com.google.ortools</a></div></div>
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<div class="ttc" id="classcom_1_1google_1_1ortools_1_1sat_1_1IntVar_html"><div class="ttname"><a href="classcom_1_1google_1_1ortools_1_1sat_1_1IntVar.html">com.google.ortools.sat.IntVar</a></div><div class="ttdoc">An integer variable.</div><div class="ttdef"><b>Definition:</b> <a href="com_2google_2ortools_2sat_2IntVar_8java_source.html#l00021">com/google/ortools/sat/IntVar.java:21</a></div></div>
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<div class="ttc" id="classcom_1_1google_1_1ortools_1_1sat_1_1CpModel_html"><div class="ttname"><a href="classcom_1_1google_1_1ortools_1_1sat_1_1CpModel.html">com.google.ortools.sat.CpModel</a></div><div class="ttdoc">Main modeling class.</div><div class="ttdef"><b>Definition:</b> <a href="CpModel_8java_source.html#l00040">CpModel.java:40</a></div></div>
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<div class="ttc" id="interfacecom_1_1google_1_1ortools_1_1sat_1_1LinearExpr_html_a3d9212f8954f9eab6a2c29fd7d5155cc"><div class="ttname"><a href="interfacecom_1_1google_1_1ortools_1_1sat_1_1LinearExpr.html#a3d9212f8954f9eab6a2c29fd7d5155cc">com.google.ortools.sat.LinearExpr.scalProd</a></div><div class="ttdeci">static LinearExpr scalProd(IntVar[] variables, long[] coefficients)</div><div class="ttdoc">Creates a scalar product.</div><div class="ttdef"><b>Definition:</b> <a href="LinearExpr_8java_source.html#l00033">LinearExpr.java:33</a></div></div>
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<div class="ttc" id="enumcom_1_1google_1_1ortools_1_1sat_1_1CpSolverStatus_html_ad8e0d730a50b9197cbf2c80e5b946ea7"><div class="ttname"><a href="enumcom_1_1google_1_1ortools_1_1sat_1_1CpSolverStatus.html#ad8e0d730a50b9197cbf2c80e5b946ea7">com.google.ortools.sat.CpSolverStatus.FEASIBLE</a></div><div class="ttdeci">FEASIBLE</div><div class="ttdef"><b>Definition:</b> <a href="CpSolverStatus_8java_source.html#l00041">CpSolverStatus.java:41</a></div></div>
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<div class="ttc" id="namespacecom_1_1google_html"><div class="ttname"><a href="namespacecom_1_1google.html">com.google</a></div></div>
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<div class="ttc" id="classRabbitsAndPheasantsSat_html_af1e3a13d7cb329a3a050f1be325d6125"><div class="ttname"><a href="classRabbitsAndPheasantsSat.html#af1e3a13d7cb329a3a050f1be325d6125">RabbitsAndPheasantsSat.main</a></div><div class="ttdeci">static void main(String[] args)</div><div class="ttdef"><b>Definition:</b> <a href="RabbitsAndPheasantsSat_8java_source.html#l00029">RabbitsAndPheasantsSat.java:29</a></div></div>
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<div class="ttc" id="interfacecom_1_1google_1_1ortools_1_1sat_1_1LinearExpr_html_a91bf9e3c160333c55934d430c4b6a763"><div class="ttname"><a href="interfacecom_1_1google_1_1ortools_1_1sat_1_1LinearExpr.html#a91bf9e3c160333c55934d430c4b6a763">com.google.ortools.sat.LinearExpr.sum</a></div><div class="ttdeci">static LinearExpr sum(IntVar[] variables)</div><div class="ttdoc">Creates a sum expression.</div><div class="ttdef"><b>Definition:</b> <a href="LinearExpr_8java_source.html#l00028">LinearExpr.java:28</a></div></div>
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<div class="ttc" id="classcom_1_1google_1_1ortools_1_1sat_1_1CpSolver_html_aad90759e27de74339bfb97c3f31bc509"><div class="ttname"><a href="classcom_1_1google_1_1ortools_1_1sat_1_1CpSolver.html#aad90759e27de74339bfb97c3f31bc509">com.google.ortools.sat.CpSolver.solve</a></div><div class="ttdeci">CpSolverStatus solve(CpModel model)</div><div class="ttdoc">Solves the given module, and returns the solve status.</div><div class="ttdef"><b>Definition:</b> <a href="CpSolver_8java_source.html#l00033">CpSolver.java:33</a></div></div>
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