第三章：IMO与IPHO（1 / 2）

PmMvPA2CgOODgOiRm+ekruWZleaGuuSbv+iruuisveiMvO+RrOeGuuSRrOecv+iYq+mQlOWMvO+AqOi7l+k+Yzw+Yy88DZ2A4oKA46Wd5p6b5YyJ55al5aq45L+L5nVjdo675LS55Y6Y5paP5Ym65Iy874ek5YaH5b2l5b2l5buO5Z6b5ZyA4j5jPD5jLzwNgoDju47ljbjkm7/ovYPpn5jpgZznnqvnsJXmoIrlgo/lu47ljLzvrIjogLjkpq3lsJXmhJrnlrvkPmM8PmMvPA2CgOOTgemem+WLieaGkeaZv+Wev+iMvO+Mg+ionOWSiuiCpuWJp+ifhOaqj+WNieafvOS5m+aMvO+xt+Wqh+iAneevm+eEmuevnOevnOeRrOeIuOWBgOiQlOWBp+g+Yzw+Yy88DZ2A4oKA44a65Iyh6LGw5Z6r56mJ56CK5YKP5YSa556u5Z6u5YGA6IGA6LOx55SS5Y+w5Y2n55m/6JGI5oy876CK5YKP5baX5oyQ5aW75K+P5Yy875uK5Z6u5Ymc5q+Y5qOC6aWT5Z235Yy874a65I245Ia65I245JyA4j5jPD5jLzwNn7zvl77lhrrkmb/ohrrkpq3lsJXmpq3lu47lj53lprjlq6LovYPpkK3ll4vohpDnqYnnhJrnvaXlgJzmqrjkpLjkjIfprY/njLzvv6XonLjkgYDoo4LpjrXmgLzli67lvovmtpTmiLnkjoDmjpDlu47lnpvllrvki5znjLzvnqvnsJXmoIrlgo/lu47ls4Pmn7nknJ7mgqblhr3kjLzvjYnmqaTlhpDnqYnnqrjkr5jmn7nkhr3kjLzvnbflkL7lirjkjbjklK/mtoTnvZnokK3lj7Dlmb/oPmM8PmMvPA2CgOONieafvOS5m+aEmueBl+aAuOSonOWZq+eAneeLnOeEmuevnOevnOeRrOecv+iYq+mQlOWMvO+OkOV2u47lnbflkL7lj4TmjJDlPmM8PmMvPA2dgOKfvO92u47ls4Pmn7nkoL3kn7zvopHlsbzkjLzvjYnmn7zknIDiPmM8PmMvPA2CgOOGuuSfpOWztuixsOWNgemAuOSLnOeNhuW0r+ilneaWu+S5r+W/peicuOSbuuSZv+iGveSMvO+xt+aIvuWvmOaNuOS2ueWGv+WwruiKu+SCpuWmreWwleaEmuemreWnpOWtuOSYq+mEmueAoee6n+WbuuSAuOS9g+ivj+WMvO+EmueGuuSolOefpOWztuivmOa5r+Wdu+ejgumMvO+bteieq+eflOetuOSYq+mNp+eZv+h2oIrlgo/lh7/ojbjkPmM8PmMvPA2CgOOEmueRsOWNuOSut+WBpuivmOaYv+imreWwleaEmueWu+SMvO+Ur+a4m+esveSnpOWnuueFtuiEmueMleemreWwleabuuSZv+ivlua3u+WUsOWVs+Z0gYDjhbbmqYjlt77lt8KUsOWDn+WumueBgOOvluaUsOWAgOa3woGy6be+5Ymu5YKm5ZSv5oy877au5aat5bCV5qe657ah6YSa56at5bCV5rap55Sg56+655u65KOC6YyS5Yy877aE55O95T5jPD5jLzwNgoDjmqTlqqTlhJrnrrflmrzkjbjkua/lnbvnn7nkjLzvgKfnmLzkiLnko4LphpDnqYnniZzmobLmtoTnvZnom4rlvYPopq3lsJXmhJrnlrvkpbvkgInmPmM8PmMvPA2CgOOEmueWpeWojOiUsOWyj+iHv+iwiOW/i+avmOafueSWu+SMvO+OkOWOmOaBr+iEmueZgOKjj+W6vOePh+motOiMkuWngOaonOWYreWvluaUsOWzseeNvO+oneaYgOKQiOaMruWonOWGveSMvO+EmueLiealheWinem5luaGkOepieeOu+SvmOaYoum+mumZgOKjj+W6vOePh+motOiMkuWngOaonOWYreWvluaUsOWzseeNvO+oneaYgOKOmOaBr+iWu+S0r+i9meg+Yzw+Yy88DYKA44Sa57+y5o2J5YCc5oyV56at5bCV5q+Y5rSv6KW75K+P5beF5aW35aat5bCV5oSa57CI5aiU54y875mA5baX5oSa55ii6a6X6ZmA4qOP5bq854+H6ai06IyS5aeA5qic5Zit5a+W5pSw5bOx542876id5piA4o6Y5oGv6Lap55Sg56ic5a+Y5quI5bmJ5z5jPD5jLzwNgoDjt4Xlpbflpq3lsJXmhJrnt6DmhJDljafnhJDlsIjlqJTngabogJzpuLjlj7vnjLzvrbjki6jnh7/ohJrnhpDnqYnntqnnlKDnqJzljLzvtq7lhojljbjkhpDnqYnnpq3lsJXmn6vnla/mPmM8PmMvPA2CgOOEmueIjuaZleamreWwleaEmueGiOWog+mnpOWdu+eAneaSp+e9g+ivmOaYv+ifueSMvO+dt+iut+WJnOaIueSOgOaNhuWGveSMvO+npOWIvuWut+W4m+elnea3teiUr+abiuW9g+iGkOepieeMkuWbiuW9g+imreWwleaEmueWu+S2hOe9meiMvO+NieWflOeNh+k+Yzw+Yy88DYKA44Sa56Wd5p6b5Z+U542H6Y6Q5bS55YGN5Yy65K+Y5oy875a75ISa56Wd5p+O5a+Y5o245Ja75ISa55q85Jm/6K+P5T5jPD5jLzwNgoDjtpjpp6TlgLjkhrrkrrflmq7lr4LopZ3mt7XolK/muJvnhpDnqYnnjJLlhr3kjLzvmZTpjbjkn7nktoTnvZnoqbvnkIjmpq3lsJXmjLzvhJrnh6TlhoflnqvnqYnnjafnhJDlurjkr5jmvYPpn7nkg7vnra7ohJrnqJfpk7jkjJLlm7XonqvnhJrnoIrlgo/lu47lh7/ojLzvhpDnqYnnr5jmhJrnpq3lu7jkqJzlsI7nlrvkn6vnla/mjLzvuLjlo63mn7nkrqHnhJrnlbPms4Pmjafnmb/oiZzmh7/ojbjkPmM8PmMvPA2CgOOGjuWPu+etuOSYq+mLuOSAuOSMr+WwuOSpjueAuOSpjue7juWHv+izg+avmOaqj+WtuOS8nOeEmueIuOWBgOiQlOWonOWwiOWzg+ahsuaMvO+Emue7juWVs+azg+aEmueMieeRh+m/i+aAneexiuavmOavj+V2oIrlgo/lu47llrvkPmM8PmMvPA2CgOOXvuWNuOSRrOetk+WbuuSJnOa2l+a/oemMvO+dgOaPhOaEmuetuOSdr+iZv+icv+iYq+mQlOW9meeOmOazg+aNieadt+WQvuWMvO+LuOSAuOSGuuSjhOY+Yzw+Yy88DYKA44Sa55Wz5rOD5qq45Jm/6ICd57GK5q+Y5p+55LuO5Za75IGM5q+U5j5jPD5jLzwNgoDjdWN2oIrlgo/lpZ3mi7jkpY7mjZPlsb3liLnkjoDmjbjktrnljLzvgKjojIDolrvkua/ljLzvn5jpra7ohpvppZDopLvkrIbloIrlgo/ljbjkjLzvn5jpvZvlm7/ojbjkgaboqo/lo63mjY/lPmM8PmMvPA2CgOOapOWNuOSut+WfueSpjuepjue7juW0r+ilu+SAieaMvO+7juWNuOSbv+i9g+mfmOm9m+WMvO+GuuSppOW2oemxsOWDgOi9m+WLuOSAuOSgiuWCj+WMvO+fmOmBnOelreaireaavOSHjueCpuanpOWMvO+0r+ilneazueW0sOamreWwleaEmueonOWwjueQreWPsOWZv+ilu+SUuOSMgOg+Yzw+Yy88DYKA452755KL5pq85KGg5qat5YCJ5qqT5Ymc5qGy5oy875GM5pa75Lu75KW75K+P5b2D6aat5aek5YSa54WG5b2b5Yy877uv6KiU54245L2D6Ym45Jir6Yy877OD5pa75Jye5oKm5T5jPD5jLzwNgoDjhrrkgabogJ3noormoaDmpq3liZzmsbDlqZfmjLzvk7DogInmoJfmvYPpg4DomKvpoIrlgo/ljbjkgo/llrvko63mjY/ljLzvmZTpjbjkn7nkr7bmn5TnrbjkmKvpi7jkgLjkjK/lsLjkub7oo4LpnqvnsJXmu47ln6vnla/mPmM8PmMvPA2CgOOyt+WMgOiLuOSAuOSVr+i5vuijgummreWwlea7juWzg+avmOaWu+SvmOaTveWxsOWWu+SMvO+ZgOW2l+aEmud2oIrlgo/ls4PmuoflkI/mnbflkL7ljLzvs4PmmqTliZzmobLmsbDlrJzmuaDmnL/omKvpkJTlnq7ltoXlPmM8PmMvPA2CgOOGuuSPhOaMkOWxsOWZv+iwiOWzg+ahsuaMvO+EmueHpOWGh+WEmueWj+WJuuStu+enu+eGuuS9peWageW9g+mMvO+EmueWu+SdiuWBjOaaneWavOSIuOWBgOiQlOW6uOSlu+SWu+SMvO+LuOSAuOSGuuSjhOadt+WQvuWMvO+dr+iZv+iwiOWskOU+Yzw+Yy88DZ2A4oKA472l5Z+55LG35aqH6Iu45IC45Iyv5bC45LuO5Yy8742Q5aWK5qC95Jm755a75Kmu6Iy877+l6Jy45IGA6KOC6Y615oC85Yuu5b6J5ruO5aC95J6r57CV5oy874a65KWK5qC95Jm755GI5p6r56mJ54y874yh6JyA4j5jPD5jLzwNk4HpkaznjLzvhrrkgLzlvpTmiI/ls43lj5rph7/ojbjkjLzvtKTliZznhrrkt7XosZrnprrljYblnL/omKvpkJTlPmM8PmMvPA2CgOOloeilvOWBpuiaruWvguiOkOWflOeNh+mMvO++huaXgemEmueAuOSsrOewiOW/i+a9g+ihsua9g+l1Y3agiuWCj+WmuuWJuOSWuOSNieWGveSMvO+6uuSftOi6rOabuuSJnOZ1Y3agiuWCj+W7juWGr+imreWEmueonOWwjueWu+Slu+S2hOe9meg+Yzw+Yy88DYKA44Sa57qH5YCA6Zq85I245K+Y5raE56qH6Ja75Iy876CK5YKP5baX5oyQ5b2D6Jye5oKm5T5jPD5jLzwNgoDjnL3kjZPmqrjkmb/ooIrlgo/ltpfmjJDlpbvkr4/liZzmmL/otoTnhbHlsIjls4PmobLmhr3kjLzvhrrkdWN2hJrntLnlirvksaTlmZTpgabourjkpbvklrvkrJzmn47ljLzvk4Hpo4/lgLzlnbflkL7lPmM8PmMvPA2dgOKCgON1Y3aMkuV2oIrlgo/ltpfmjJDls4PmkYjmjLzviLjlgYDokJTlnIDiPmM8PmMvPA2CgOOOveSavOSNuOSaruWvguiileaWu+SxsOWQiOaEmueOkOWlu+SMvO+LpeWki+WKuOSgiuWNhuWMvO+NieappOWquOSvmOaZv+iMvO+EmueMh+m8nOeonOWLnOevmOaWu+Slreabv+iEmuedt+WQvuWMvO+0l+m2l+aEmue0ueWAuOSZv+ifq+eVr+Y+Yzw+Yy88DYKA46m755CI5oSa572l5bSb5rCI5b+L5r2D6Lmv5Z2753VjdqGs5oC45KCK5YKP5Y2G5bS55Yq75J235ZC+5YSa54yJ57aT6bq65Kq45Jqe5oC45Je+5ZaP5ba55Zu16IyV55a45Ie/6KWF5YCd5o+757K35bS55buO5Yy876Wd5ouc55a75Kic5T5jPD5jLzwNgoDjgIDoo43oi4Dlmb/osaTlmZTpnbflkL7lm5zmjLjljbjktoTnqofonL/omKvpkJTljLzviLjlgYDohpDnqYnnhJrnlrvkurjknL3kPmM8PmMvPA2CgOOBpuiAneeiiuaavOS9g+mfueSmreWnpOWquOSAuOSVveS7u+SFhuW9m+WMvO+WpeWAgOijjeivmOazh+ialOeMvO+WpeWck+mMkuWWpeW2k+mvmOaqj+WMvO+MieeRh+mvmOaNuOSVgOaqk+WMvO+LieaonOWMieeWpeWEmuebteieq+eol+mkuOSZv+h1Y3aFgOiWiOZ2iZzmO2d0Jm8vO2d5JjtndCZvO2d5Jj5jPA==