Web考前掙扎. 圓方樹這麼早就出現了嘛。。。 要求每個點必須被經過的次數 所以就是路徑上的割點/端點++ 由於圓方樹上所有非葉子圓點都是割點 所以就是樹上差分就可以辣。 Web28 Mar 2024 · JZOJ3225[BJOI2013]load. 仙人掌的圆方树. upd 2024.4.9 咕了好久,我终于来填坑了!! 好像上面那个叫广义圆方树,这个才是正统圆方树来着,我又学错顺序了?? 仙人掌. 无向仙人掌是指一条边至多在一个简单环中的无向图. 构建
JOI Open Contest 2013 - ioi-jp.org
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压力[BJOI2013] AK-dream #101 - Github
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