Initial commit: C++ courseware

2.Course/2.深入浅出程序设计竞赛（提高篇）/书籍：深入浅出程序设计竞赛（进阶篇）/images/svg/fig-232.svg

@@ -0,0 +1,17 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 420 330" width="420" height="330"><title>斜率优化的几何解释</title><defs><marker id="a" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse"><path d="M0 0L10 5L0 10Z" fill="#416687"/></marker></defs><rect width="100%" height="100%" fill="white"/><g font-family="Microsoft YaHei,Arial,sans-serif" fill="#263c52" stroke-linecap="round">
+<path d="M40 250L390 250" fill="none" stroke="#416687" stroke-width="2" marker-end="url(#a)"/>
+<path d="M40 315L40 15" fill="none" stroke="#416687" stroke-width="2" marker-end="url(#a)"/>
+<text x="22" y="27" text-anchor="middle" dominant-baseline="central" font-size="19">fₖ</text>
+<text x="376" y="277" text-anchor="middle" dominant-baseline="central" font-size="19">S꜀ₖ</text>
+<text x="20" y="257" text-anchor="middle" dominant-baseline="central" font-size="19">O</text>
+<path d="M25 220L330 115" fill="none" stroke="#67859e" stroke-width="2" stroke-dasharray="7 5"/>
+<path d="M25 298L330 45" fill="none" stroke="#67859e" stroke-width="2" stroke-dasharray="7 5"/>
+<circle cx="85" cy="200" r="5" fill="#829fbe" stroke="#416687" stroke-width="2"/>
+<text x="72" y="182" text-anchor="middle" dominant-baseline="central" font-size="20">P1</text>
+<circle cx="145" cy="138" r="5" fill="#829fbe" stroke="#416687" stroke-width="2"/>
+<text x="132" y="120" text-anchor="middle" dominant-baseline="central" font-size="20">P2</text>
+<circle cx="260" cy="103" r="5" fill="#829fbe" stroke="#416687" stroke-width="2"/>
+<text x="247" y="85" text-anchor="middle" dominant-baseline="central" font-size="20">P3</text>
+<text x="356" y="107" text-anchor="middle" dominant-baseline="central" font-size="17">状态 i</text>
+<text x="350" y="38" text-anchor="middle" dominant-baseline="central" font-size="17">状态 i+1</text>
+</g></svg>