#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;
}



```cpp
#include <bits/stdc++.h>
#include <cmath>
using namespace std;
int main() {
	long long a[3];
	for(int u=0;u<3;u++){
		cin>>a[u];
	}
	if(a[0]+a[1]>a[2] and a[2]+a[1]>a[0] and a[0]+a[2]>a[1]) cout<<"yes";
	else cout<<"no";
	return 0;
}
```


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