diff --git a/cpp/2206/220607-CN.cpp b/cpp/2206/220607-CN.cpp
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+/**
+ * 875. Koko Eating Bananas
+ * Koko loves to eat bananas. There are n piles of bananas, the ith pile has piles[i] bananas. The guards have gone and will come back in h hours.
+ * Koko can decide her bananas-per-hour eating speed of k. Each hour, she chooses some pile of bananas and eats k bananas from that pile. If the pile has less than k bananas, she eats all of them instead and will not eat any more bananas during this hour.
+ * Koko likes to eat slowly but still wants to finish eating all the bananas before the guards return.
+ * Return the minimum integer k such that she can eat all the bananas within h hours.
+ *
+ * Refer: 220120.cpp
+ */
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