Question

Convex games with this property must have a non-empty core, meaning that they are totally balanced. If the characteristic function of games with this property is supermodular, (10[1])the function can exhibit “snowballing.” The MCST game is a game with this property in which each player in a complete graph has to seek out a supply node to create a minimum-cost spanning tree. The Nakamura number of games with this property is the minimal number of winning groups with empty intersection. Games with this property are simple if the pay-off is either zero or one. Vetoers in simple games with this property belong to all winning coalitions. Agents using a tit-for-tat (10[1])strategy (-5[3])first (-5[1])act (-5[1])in a method (10[1])described (-5[1])by (-5[2])this word (10[3]-5[1])before (10[1])reciprocating (10[3])their opponent’s move. For 10 points, name this word used to describe games that encourage working (-5[1])together. (10[1])■END■ (10[9]0[2])

ANSWER: cooperativity [or cooperative games; accept cooperation; accept coalitional until “coalition” is read]
<Other Science>
= Average correct buzz position

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Summary

2025 ACF Nationals04/19/2025Y2291%0%45%123.95

Buzzes

PlayerTeamOpponentBuzz PositionValue
Geoffrey WuColumbia AChicago A2610
Rayton LinWaterloo BColumbia B10910
Andrew WangIllinois ANYU110-5
Sharath NarayanNorthwesternGeorgia State110-5
Thomas TibbettsUCFUC Berkeley B110-5
Jonathan HuangMITIndiana111-5
Joseph ChambersVirginiaPenn State112-5
Albert Yingzhi NyangLSEMaryland11510
Michał GerasimiukStanfordJohns Hopkins116-5
Orion KellerVirginia TechOhio State117-5
Matthew WangBritish ColumbiaWUSTL B117-5
Jaik HavlickArizona StateToronto A11910
Conor ThompsonIowa StateIllinois B119-5
Swapnil GargUC Berkeley ANorth Carolina B11910
Todd MaslykMichiganToronto B11910
Jisoo YooTexasGeorgia Tech12010
Cade ReinbergerRITRutgers12110
Tiffany ZhouFloridaWUSTL A12110
Liam KusalikWaterloo AVanderbilt12110
Joy AnHarvardOttawa137-5
Colin VeeversOttawaHarvard13810
Liam StarnesChicago BToronto C13910
Eshan PantNYUIllinois A13910
Alex AkridgeIndianaMIT13910
Arjun KalaIllinois BIowa State1390
Sinecio MoralesJohns HopkinsStanford13910
Amogh KulkarniGeorgia StateNorthwestern13910
Roxanne TangOhio StateVirginia Tech13910
Anuttam RamjiUC Berkeley BUCF13910
Teigue KellyPenn StateVirginia1390
June YinWUSTL BBritish Columbia13910
Joel MilesMinnesotaWinona State13910