Roman numerals: glyph reuse by design
Both BAS and its American equivalent, the US Antarctic Program, advertise their jobs online. BAS also holds an open day in March.
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Animation: Jacqui VanLiew; source images: Getty Images
Фото: Дмитрий Духанин / Коммерсантъ
// 易错点2：遍历结束后k仍0 → 栈是递增的，末尾数字更大，移除末尾k位