Xiaohong surrounds a triangle with 3 small sticks whose lengths are in whole centimeters. She chooses two small sticks of 10 cm and 6 cm. What is the longest centimeter of the third small stick she chooses?
小红用3根长度都是整厘米数的小棒围三角形，她选了10厘米和6厘米的两根小棒，那么她选的第三根小棒最长是多少厘米．
<gadget id="calculator">10 + 6</gadget>
<output>16</output>

<gadget id="calculator">16 - 1</gadget>
<output>15</output>

<result>15</result>