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

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

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

#include <iostream> using namespace std; int main(){ int a,b,c; cin>>a>>b>>c; if(a+b>c && a+c>b && b+c>a){ cout<<"yes"; }else cout<<"no"; }

#include <iostream> using namespace std; int main(){ int a,s,d; cin>>a>>s>>d; if ((a+s)>d&&(a+d)>s&&(s+d)>a){ cout<<"yes"; } else { cout<<"no"; }

#include <iostream> using namespace std; int main() { int a, b, c; cin >> a >> b >> c; }

#include <iostream> using namespace std; int main(){ int a,b,c; cin>>a>>b>>c; if(a+b<=c||b+c<=a||a+c<=b){ cout<<"no"; }else{ cout<<"yes"; } }

#include <iostream> using namespace std; int main() { int a, b, c; cin >> a >> b >> c; if (a + b > c && a + c > b && b + c > a) { cout << "yes" << endl; } else { cout << "no" << endl; } return 0; }

#include<stdio.h> int main(){ int a,b,c; scanf("%d %d %d",&a,&b,&c); if(a+b>c&&a+c>b&&c+b>a)printf("yes"); else printf("no"); return 0; }

#include <iostream> using namespace std; int main(){ int a,b,c; cin>>a>>b>>c; if(a+b>c&&b+c>a&&a+c>b){ cout<<"yes"; }else{ cout<<"no"; } return 0; } //懂了吧？

include <iostream> using namespace std; int main(){ int a,b,c; cin>>a>>b>>c; if((a+b)>c&&(a+c)>b&&(c+b)>a) { cout<<"yes"; } else { cout<<"no"; } return 0; }

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

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

#include<cstdio> using namespace std; int main(){ int a,b,c; scanf("%d%d%d",&a,&b,&c); if(a+b>c&&a+c>b&&b+c>a){ printf("yes"); }else{ printf("no"); } return 0; }

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

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