忘记了密码?新用户?<一个href="//www.parkandroid.com/account/signup/?signup=true&next=/algebra/%3Fsubtopic%3Dclassical-inequalities" id="problem-signup-link-alternative" class="btn-link ax-click" data-ax-id="clicked_signup_from_generic_modal" data-ax-type="button" data-next="/algebra/%3Fsubtopic%3Dclassical-inequalities">报名
现有的用户?<一个href="//www.parkandroid.com/account/login/?next=/problems/from-login/present-mystery/try-value-value/" id="problem-login-link-alternative" class="btn-link ax-click" data-ax-id="clicked_login_from_generic_modal" data-ax-type="button" data-is_modal="true" data-next="/problems/from-login/present-mystery/try-value-value/">登录
一个 , b , c ( 一个 < b < c ) A, b, c\ (A 一个,b,c(一个<b<c)为互素整数,有以下2组present box:
哪个集合的总表面积更大?
忘记了密码?新用户?<一个href="//www.parkandroid.com/account/signup/?signup=true&next=/problems/from-signup/present-mystery/no-group/try-value-value/" id="problem-signup-link-alternative" class="btn-link ax-click" data-ax-id="clicked_signup_from_problem_modal" data-ax-type="button" data-next="/problems/from-signup/present-mystery/no-group/try-value-value/">报名
现有的用户?<一个href="//www.parkandroid.com/account/login/?next=/problems/from-login/present-mystery/try-value-value/" id="problem-login-link-alternative" class="btn-link ax-click" data-ax-id="clicked_login_from_problem_modal" data-ax-type="button" data-is_modal="true" data-next="/problems/from-login/present-mystery/try-value-value/">登录
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