If the two sides of a triangle are 5 cm and 8 cm, what is the longest length of the third side in cm? (The length of the third side is in whole centimeters)
一个三角形的两条边分别是5厘米和8厘米，那么它的第三条边的长度最长是多少厘米．(第三条边的长度为整厘米数)
<gadget id="calculator">8 + 5</gadget>
<output>13</output>

<gadget id="calculator">13 - 1</gadget>
<output>12</output>

<result>12</result>