#include<iostream>
#include<string>
#include<cmath>

using namespace std;

#define TMAX 100000

int main(){

	int T,A,B;
	string AB[TMAX];

	cin>>T>>A>>B;

	for(int i=0;i<T;i++){
		AB[i]="";
		
		if(T-i==2&&abs(A)==1&&abs(B)==1){
			if(A>0) AB[i++]='^',A--;
			else AB[i++]='v',A++;
			if(B>0) AB[i++]='>',B--;
			else AB[i++]='<',B++;
		}
		else if(T-i==2&&abs(A)+abs(B)==1){
			if(A>0) AB[i++]="^>",AB[i++]='<',A--;
			else if(A<0) AB[i++]="v>",AB[i++]='<',A++;
			else if(B>0) AB[i++]=">v",AB[i++]='^',B--;
			else AB[i++]="<v",AB[i++]='^',B++;
		}
		else if(A==0&&B==0){
			if(T-i==2){
				AB[i++]="<";
				AB[i++]=">";
			}
			else if(T-i==3){
				AB[i++]="<^";
				AB[i++]=">";
				AB[i++]="v";
			}
			else AB[i]+='>',B--;
		}
		else{
			if(A>0) AB[i]+='^',A--;
			else if(A!=0) AB[i]+='v',A++;
			if(B>0) AB[i]+='>',B--;
			else if(B!=0) AB[i]+='<',B++;
		}
	}

	if(A==0&&B==0){
		cout<<"YES"<<endl;
		for(int i=0;i<T;i++){
			cout<<AB[i]<<endl;
		}
	}
	else cout<<"NO"<<endl;

}