package yukicoder;
import java.util.Scanner;
public class Main{
	public static void main(String[] args)throws Exception{
		new Main().solve();
	}
	void solve(){
		Scanner sc=new Scanner(System.in);
		int t=sc.nextInt();
		int a=sc.nextInt();
		int b=sc.nextInt();
		String[] ans=new String[t];
		if(a==0&&b==0){
			ans[t-1]="v";
			a++;t--;
		}
		while(a>0&&b>0){
			if(a==1&&b==1)last(a,b,t,ans);
			if(t<=0){System.out.println("NO");return;}
			ans[t-1]="^>";
			a--;b--;t--;
		}
		while(a>0){
			if(a==1&&b==0)last(a,b,t,ans);
			if(t<=0){System.out.println("NO");return;}
			ans[t-1]="^";
			a--;t--;
		}
		while(a<0){
			if(a==-1&&b==0)last(a,b,t,ans);
			if(t<=0){System.out.println("NO");return;}
			ans[t-1]="v";
			a++;t--;
		}
		while(b>0){
			if(b==1&&a==0)last(a,b,t,ans);
			if(t<=0){System.out.println("NO");return;}
			ans[t-1]=">";
			b--;t--;
		}
		while(b<0){
			if(b==-1&&a==0)last(a,b,t,ans);
			if(t<=0){System.out.println("NO");return;}
			ans[t-1]="<";
			b++;t--;
		}
	}
	boolean safe(int a,int b){
		int[] x={1,0,1};
		int[] y={1,1,0};
		for(int i=0;i<3;i++){
			if(x[i]==a&&y[i]==b)return true;
		}
		return false;
	}
	void last(int a,int b,int t,String[] ans){
		if(t==2&&(a==-1||b==-1)){
			System.out.println("NO");
			System.exit(0);
		}else if(t<=0){
			System.out.println("NO");
			System.exit(0);
		}else{
			//a↑　b→
			if(b==-1){
				a++;
				ans[t-1]="v";
				t--;
			}else if(a==-1){
				ans[t-1]="<";
				b++;
				t--;
			}
			int[] da={1,1,0,-1,0};
			int[] db={1,0,1,0,-1};
			String[] ds={"^>","^",">","v","<"};
			while(t>=2){
				for(int i=0;i<5;i++){
					int na=a-da[i];
					int nb=b-db[i];
					if(safe(na, nb)){
						//						System.out.println(na+" "+nb+" "+ds[i]);
						a=na;
						b=nb;
						ans[t-1]=ds[i];
						t--;
						break;
					}
				}
			}
			for(int i=0;i<5;i++){
				int na=a-da[i];
				int nb=b-db[i];
				if(na==0&&nb==0){
					a=na;
					b=nb;
					ans[t-1]=ds[i];
					t--;
					break;
				}
			}
			System.out.println("YES");
			for(int i=ans.length-1;i>=0;i--)System.out.println(ans[i]);
			System.exit(0);
		}
	}
}