902.领先版本的理解（2 / 2）

PmMvPCkngoDjJyAsJ4KA47Sv6J6u5Z2v6J6u5Yq754aZ6T5jPD5jLzwNnYDigoDjmZTpobLmnIDiPmM8PmMvPA2dgOKfvO+lnea6h+WimemFl+eepee+sueOu+SaiOWgveQuLi4uLi6cgOI+Yzw+Yy88DYKA45OB6a6X6a+Y5o665Iy874mn6J+E5oSa55ec5oC85baE54Gx6I2n54C45Imc5raX5r+h6Yy875mW5oS16ISa56Wd5oe/6JKA6YKP5bm45IiZ6Ya65LCI5Yuc54iP5Za75D5jPD5jLzwNgoDjiafon4TmhJrnvJbnn5TntKnns5jpqqTljafngLjkiZzmuYnnr5bmlLTljLzvna/ohJrnirvnhpnpsIjlrJDlPmM8PmMvPA2dgOKCgOOCiuiGu+eTgemln+eRiOalu+SAieaMvO+0oOemvuSGuuSOuOSCj+WfueSRiOa2l+aTveWMvO+Hv+iflOeRj+WfueSMleeWuOSeruWwjueonOWIoea6uuSAneavjueev+iZv+iMvO+snOadk+i6uOSMleeWuOSeruWwjuelu+SDouW7ueWGveSMvO+7ueWmouaEmueuvee+ruiMh+mZv+ionOWwm+WRiOaGsOWMgOiEmueum+ebuuSQn+aGuuS6uOSRgOO6uuSLueSXmuaRu+mQgOOvmOaqj+WMvO+DouW7ueWvmOa9g+mHiOWAuOSEmueMh+mZv+icgOI+Yzw+Yy88DYKA442B6YC45Ia65I2k5Y2H6Yq754aZ6T5jPD5jLzwNnYDigoDjjJXnlrjknq7lsI7nr5jmjLzvr47nqr7lr5jmjbjknIDiPmM8PmMvPA2CgOOxt+Wqh+iNgOionOWPg+W9peWKu+eGmemXvuWJp+i5ieevluaUtOU+Yzw+Yy88DZ2A4p+874a65K+O56q+5Zu/6K+Y5pi/6KC95LSv6LOD5qC95KW75ICJ5pyA4j5jPD5jLzwNnYDigoDjurrkr4rnh7/ogafoj7vnvpvmkYjmjLzvjIfpjJXnlrjknq7lsI7nqJzlurjkoJvlnIDiPmM8PmMvPA2CgOOTgem0r+iwnOW2hOeqh+iIvuWKu+eGmek+Yzw+Yy88DZ2A4oKA44a65JmU6aGy5oSa57Sv6JGI5qWd5ouc55yA4j5jPD5jLzwNnYDin7zvhJrntK/ourrkq4jlrJDlr5jmmL/ojLzvhrrksIjlgafovJznsrrkoL3kr5jmn7zvro3muaDmiLnkgLvkiZzmjLzvm7rkmb/otK/ooL3knIDiPmM8PmMvPA2CgOOKu+eGmemRkOWLnOe0pOWsiuaMh+mVueWPseW6nOaLieaOu+SIj+WMvO+oiuWAuOSbnee8nOe5ieevluaUtOWMvO+LnOe5ieevluaUtOWZu+e/i+avgeahv+SEmueLuuSMkOWGsOWWu+SMvO+vgeaItuaGuuSwiOW2lOaxsOWMueSJnOaVveSMvO+rv+WIvuU+Yzw+Yy88DYKA46Wd5re16Luz55SB6LaF5Yaw5b6a6Yi+5Yy874a65Lq65KiL5oC45K+Y5o245L2D6bq65Iy874Gn6JW955eu54245J+55Iy875Ct5Yih5omc5r2D6bS55aCH5b2l5ZSa6baX5oy877mW5rCc5aq45IC45IyQ5Yy875qk5biu6Ie/6J+U55GP5Z6u5baF5Yih5oCd5raH5Z+r55Wv5j5jPD5jLzwNgoDjpZ/mg7DoiZzmobLmmL/otpfmgprmjLzvtrvkiKHmhJrnjYnltLnlmqTluZbmsJzlmb/ojrrks4fojLzvr4Hmob/khJrnkK3liKHmkb/ogJzmiZzmqo/lrLvklrvkPmM8PmMvPA2CgOOkruiuoeevgeahv+SRj+WLuuSMkOWEmueMh+mAseWZu+e6nOaLiea6h+W/i+aMvO+8nOeAuOSGp+i5r+WCj+W5uOSImemMkuWMueSJnOaVveSMvO+dr+iEmueKu+eGmemwiOWskOU+Yzw+Yy88DZ2A4oKA47a75Iih5oSa57y85Lux54e/6J+U55GP5a+Y5o245K+Y5o2J5aW75JCt5Yux5ZG/6ISZ6Zm/6Iu45IC45KWf5oOw6KW75K+P5ay75KC95Iy877q65ISa57+I5p+n56WX5p+n54+D5YWA6JaI5oy877+I5ouc56Wd5q+Y5oeO54Km5qek5YWA6Lut5oy874ih5riw5YaI5a+Y5pi/6JCt5Yih5pm/6KGu6LC85JGI5oy876Gs5raF5ZyA4j5jPD5jLzwNgoDjk4HptK/or5jmjIDojLzvk7vnoLrniZzmobLmirvnhpnpPmM8PmMvPA2dgOKCgOOFueSDvuiUr+aUmum0l+mvmOaqj+WMvO+8vOS4m+eQreWIoeabuuSQn+aEmueNieWLueSOuOSMvO+riOW5ieeVs+aLieaIoeacveSUuOSMgOiMvO+6uuSEmueRluevj+WwjueRj+WJnOahsua0jeWMvO+njuaRm+eEmue6nOWwjueGuuSWj+WDsOi5luamreiMvO+Ioea6uuSAneavjueev+ivmOalr+iUuuWQreWIoea3teiZv+iMvO+IheWWpumcgOI+Yzw+Yy88DYKA45S05YGA6ISa57q45KSu6ICJ5pa75K+Y5rGw5Yy877mJ56+W5pS05YSa54yH6Zm/6Iy875+f5YK85YSa556d6YyA6K+Y5ry85Kq45JCf5q+Y5pi/6Iy874Oi5bu55YSa55+L5pqZ6K+Y5oyH6Zm/6Lqu6KCX5oy874Sa556u5Z+c57mv5Z2756+Y5oa/5bCu6ISa54C+5Ye/6Ja75Iy877Sv6KWd5pS05YGA6ISa54yV55a45Kq45Jm/6Lmv5Yy874aO5Y+754Sa55a75I665JC65qWd5qWf56Su6ISa57q65Kq45IC45D5jPD5jLzwNgoDjjJXnlrjknq7ln5znr5jmjJXnlrjkhJrnirvnhpnpurjkpK7omrzkjbjkn7nkmq7lr4LouYnnr5bmlLTlhJrnjJXnlrjkqrjkmb/ojLzvt6DmgLjkjJXnlrjknq7ln5znr5jmjIfpmb/opK7ov4nmjbjklrvkgqblo63mjLzvmqXmhbjmiL7lirvnhpnpPmM8PmMvPA2dgOKCgOOnkOWQreWIoeaLnOeLnOeIheWvmOaYv+isu+SRiOaMvO+GuuSXruecgOI+Yzw+Yy88DYKA47Sk5Ymc57e16LGa57mJ56+W5pS05T5jPD5jLzwNnYDin7zviLnkgLvkmoHls4PmlbrlsIjloL3knIDiPmM8PmMvPA2dgOKCgOOyt+WMgOiUuuWNj+WIueSAu+SJnOaavOSFg+aLuuSbuuSZv+iGuuSln+eXvuWhsei7ueWEmueHgeWameiLnOeLnOezg+avmOaqj+WMvO+buuSZv+i0r+igveSMkuWRiOaMvO+FgOiNhemvlOall+anl+aEmueLuOSVuuWxseWOn+WfseaGuuSwjeWBsOWMvO+xt+Wqh+iGuuSyiee6ieePu+eyt+W5ieevluaUtOWEmuejreafnOeMvO+EmueHgeWameivmOafueSgveSev+ixsOWeruW2heWMvO+zg+a7ueWvmOa9g+mHiOWAuOSZv+icgOI+Yzw+Yy88DYKA45OB6ZSt55+c56Su6Iq754aZ6T5jPD5jLzwNnYDigoDjr47nqr7lm7/oiZzmobLmrLvkkYjmhr3kjLzvn5zmkY/lmKvphJrnr47nqr7lr5jmrqHnhJrniJzmq4XltoTnvZnonIDiPmM8PmMvPA2CgOOTgemul+m5ieevluaUtOU+Yzw+Yy88DZ2A4p+874a65K+O56q+5Zu/6KC95Iy875+c5pGP5Zir6YSa56+O56q+5a+Y5oic5quF5bSv6JGI5oyS5YGm6K+Y5o245K+Y5qWd5ou45KWO5qC95JyA4j5jPD5jLzwNgoDjtqXpjbjknb7kjbjkirvnhpnpPmM8PmMvPA2dgOKCgOODouW7ueWvmOaNieaMh+mZv+ionOWwjueMvO+0r+iCpuWNuOSMvO+EmueflOeRj+WeruWfnOevmOaZv+iMvO+NuOScgOI+Yzw+Yy88DZ2A4p+875eQ5bmu5YWG5YSa54yH6bSv6I+w5Yi55IC75K+Y5oy874Sa57Sv6I2J5pqI5aC95JyA4j5jPA==