若只解法

#include <iostream>
using namespace std;
int main(){
int a,b,c;
cin>>a>>b>>c;
if(a>b&&a>c){
if(b+c>a){
cout<<"yes"<<endl;

	}else{
		cout<<"no"<<endl;
	}
	
}else if(b>c&&b>a){
	if(a+c>b){
		cout<<"yes"<<endl;
	}else{
		cout<<"no"<<endl;
	}	
}else if(c>a&&c>b){
	if(a+b>c){
		cout<<"yes"<<endl;
		
	}else{
			cout<<"no"<<endl;
	}
	
}

}