看来是目前最短的

a=int(input())
b=int(input())
c=int(input())
print("yes" if (2*max(a,max(b,c))<a+b+c)else "no")

挑战最长。。

#include <bits/stdc++.h>
using namespace std;
int main()
{
    float a,b,c;
    cin>>a>>b>>c;
    if(a+b>c&&a+c>b&&b+c>a)
        cout<<"yes";
    else
        cout<<"no";
    return 0;
}

a=int(input())
b=int(input())
c=int(input())
if(a+b>c and a+c>b and b+c>a):
print("yes")
else:
print("no")

a=int(input())
b=int(input())
c=int(input())
if((a+b)>c and (max(a,b)-min(a,b))<c):
print("yes")
else:
print("no")