Meaning of 割勘勝 in Japanese

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Definition of 割勘勝

わりかん(warikan) 【割り勘 ·割勘】

(n) splitting the cost; Dutch treat →Related words: 割り前勘定
食事代を割り勘にした。
We shared the cost of the meal.

しょう(shou) 【勝】

わりかんがち(warikangachi) 【割り勘勝ち ·割勘勝ち】

(n) "winner" of a meal paid for by dutch treat (i.e. the person who eats the most) →Related words: 割り勘負け