📄 question_5.htm
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<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:
"Times New Roman"'>{</span><span lang=EN-US style='mso-bidi-font-size:10.5pt'>int
c=4;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>while(c==4){<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>if(*ip<=0)return 0;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>--(*ip);<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>c=<u><span style="mso-spacerun:
yes"> </span>(1)<span style="mso-spacerun: yes"> </span></u>;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>color</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>[</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>*ip</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>]</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>=-1;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:
"Times New Roman"'>}<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>return c;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>}<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>/*</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>检查区域</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>i</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>,对</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>c</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>种颜色的可用性</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>*/<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>int color0k(int i,int c,int</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>[][</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>N</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>]</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>,int color</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>[]<span
lang=EN-US>}<o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:
"Times New Roman"'>{</span><span lang=EN-US style='mso-bidi-font-size:10.5pt'>int
j;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>for(j=0;j<i;j++)<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>if(<u><span style="mso-spacerun:
yes"> </span>(2)<span style="mso-spacerun: yes"> </span></u>)<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>return 0;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>return 1;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>}<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>/*</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>为区域</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>i</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>选一种可着的颜色</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>*/<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>int select(int i,int c,int adj</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>[][</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>N</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>]</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>,int color</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>[]</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>)<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:
"Times New Roman"'>{</span><span lang=EN-US style='mso-bidi-font-size:10.5pt'>int
k;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>for(k=c;k<=4;k++)<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>if(colorOK(<u><span
style="mso-spacerun: yes"> </span>(3)<span style="mso-spacerun:
yes"> </span></u>))<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>return k;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>return 0;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>}<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>int coloring(int adj</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>[][</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>N</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>]</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>)/*</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>寻找各种着色方案</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>*/<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>{int color</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>[</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>N</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>]</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>,i,c,cnt;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>for(i=0;i<N;i++)color</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>[</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>i</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>]</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>=-1;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>i=c=0;cnt=0;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>while<u><span style="mso-spacerun:
yes"> </span>(1)<span style="mso-spacerun: yes"> </span></u></span><span
lang=EN-US style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:
"Times New Roman"'>{<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>if((c=<u><span
style="mso-spacerun: yes"> </span>(4)<span style="mso-spacerun:
yes"> </span></u>)==0){<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>c=back(&i,color);<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>if(c==0)return cnt;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>}else{<u><span
style="mso-spacerun: yes"> </span>(5)<span style="mso-spacerun:
yes"> </span></u>;i++;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>if(i==N){<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>output(color);<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>++cnt;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>c=back(&i,color);<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>}else c=0;<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>}<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>}<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>}<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>void main()<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:
"Times New Roman"'>{</span><span lang=EN-US style='mso-bidi-font-size:10.5pt'>int
adj</span><span style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:
"Times New Roman"'>[</span><span lang=EN-US style='mso-bidi-font-size:10.5pt'>N</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>][</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>N</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>]</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>=<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>{{0</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>,</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>1</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>,</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>0</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>,</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>1</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>,</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>1</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>,</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>1</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>,</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>1</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>,</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>1</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>,</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>1</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>,</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>1},<o:p></o:p></span></p>
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