There are 8 centimeters and 10 centimeters of small sticks, and if the perimeter of the triangle formed is the smallest, then one more centimeter long stick is needed.
现有8厘米，10厘米的小棒各一根，要想围成的三角形的周长最小，那么还需准备1根多少厘米长的小棒．
<result>3</result>