#include<iostream>
using namespace std;
int T,A,B;
int X[1<<17],Y[1<<17];
main()
{
	cin>>T>>A>>B;
	if(T<A||T<B)
	{
		cout<<"NO"<<endl;
		return 0;
	}
	for(int i=0;i<T;i++)
	{
		if(i<A)
		{
			X[i]+=1;
		}
		else
		{
			if(i+1<T)
			{
				X[i]+=1;
				X[i+1]+=2;
				i+=1;
			}
		}
	}
	for(int i=0;i<T;i++)
	{
		int j=T-i-1;
		if(i<B)
		{
			Y[j]+=1;
		}
		else
		{
			if(i+1<T)
			{
				Y[j]+=1;
				Y[j-1]+=2;
				i+=1;
			}
		}
	}
	bool flag=true;
	for(int i=0;i<T;i++)flag&=X[i]&&Y[i];
	if(!flag)
	{
		cout<<"NO"<<endl;
		return 0;
	}
	cout<<"YES"<<endl;
	for(int i=0;i<T;i++)
	{
		if(X[i])cout<<(X[i]==1?'^':'v');
		if(Y[i])cout<<(Y[i]==1?'>':'<');
		cout<<endl;
	}
}