Новое решение

Аноним правка от
правка #13345 позже →
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+### Statement
+
+$4.2.18.$ [Insert the problem statement]
+
+### Solution
+
+![For problem $4.2.18$ |3911x3074, 31%](../../img/4.2.18/scan-0.png)
+
+
+
+#### Answer
+
+[Insert a concise answer or boxed result]