674 三角形判断
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描述

给定三个正整数,分别表示三条线段的长度,判断这三条线段能否构成一个三角形。


输入格式
输入共三行,包含三个正整数,分别表示三条线段的长度

输出格式
如果能构成三角形,则输出“yes” ,否则输出“no”。

输入样例 1
3 
4 
5

输出样例 1
yes

输入样例 2
2
2
2

输出样例 2
yes

输入样例 3
1
1
2

输出样例 3
no

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