простые 3 - 17

#include<iostream>
#include<math.h>
#include<iomanip>
using namespace std;
int main()
{float a,b,c;
cin>>a>>b>>c;
if (a+b>c && a+c>b && c+b>a)
	cout<<"Yes"<<endl;
else
	cout<<"No"<<endl;
system("pause");
return 0;}