lessons/课程/插图/02-强连通与双连通/03-圆方树-01-原图到圆方树.svg

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  <rect width="980" height="330" fill="white"/><text x="38" y="32" class="t" font-weight="bold">原图的重叠块</text>
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  <g class="n"><circle cx="100" cy="105" r="21"/><circle cx="65" cy="230" r="21"/><circle cx="330" cy="105" r="21"/><circle cx="370" cy="235" r="21"/></g><circle cx="210" cy="175" r="24" class="cut"/>
  <g class="t" text-anchor="middle"><text x="100" y="111">A</text><text x="65" y="236">B</text><text x="210" y="181">C</text><text x="330" y="111">D</text><text x="370" y="241">E</text></g>
  <text x="55" y="295" class="s">C 同属 ABC 与 CDE</text>
  <path d="M440 164 H515" class="a" fill="none"/><path d="M515 164 l-14 -8 v16z" fill="#16a34a"/><text x="445" y="142" class="s">把成员关系外置</text>
  <text x="570" y="32" class="t" font-weight="bold">圆方树的块—割点骨架</text>
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  <g class="q"><rect x="705" y="135" width="60" height="60" rx="8"/><rect x="815" y="75" width="60" height="60" rx="8"/></g>
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  <g class="t" text-anchor="middle"><text x="625" y="111">A</text><text x="685" y="256">B</text><text x="735" y="171">C</text><text x="735" y="171" class="s" dy="42">Q1</text><text x="845" y="111">Q2</text><text x="855" y="246">E</text></g>
  <text x="570" y="295" class="s">圆点保留原点；每个方点代表一个点双分量。</text>
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