Players can complete "30 Days of Gifts" missions, which will earn them enough pack hourglasses to open 10 packs.
if (n <= 1) return;
，这一点在im钱包官方下载中也有详细论述
Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04
Comparison between barycentric (triangular) dithering and Knoll’s algorithm using an 8-colour irregular palette. Left to right: barycentric, Knoll.