Greek omicron (ο, U+03BF) is as dangerous as Cyrillic o: pixel-identical in 40+ fonts. But Greek rho (ρ, U+03C1, which maps to p) is pixel-identical only in Phosphate and Copperplate, two geometric/all-caps fonts where the structural distinction between rho and Latin p collapses. This is font-specific risk, not script-wide risk.
It has also trimmed its five-year capital spending plan to £1.7bn from £2bn by delaying investment in electric vehicle technology.
。关于这个话题，safew官方版本下载提供了深入分析
思路：找「右侧第一个 ≤ cur」的元素 → 弹出所有 cur 的元素，栈顶即为折扣。最终价格 = cur - 折扣（有则）或 cur（无则）。
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