Новое решение

kriukov правка от
правка #16100 позже →
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+### Statement
+
+$4.2.19.$ [Insert the problem statement]
+
+### Solution
+
+![For problem $4.2.19$ |1700x2200, 31%](../../img/4.2.19/scan-0.png)
+
+![For problem $4.2.19$ |1700x2200, 31%](../../img/4.2.19/scan-1.png)
+
+
+
+#### Answer
+
+[Insert a concise answer or boxed result]