#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint1000000007;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000001



int main(){
	
	vector dx = {1,1,0,-1,-1,-1,0,1}, dy = {0,1,1,1,0,-1,-1,-1};
	vector<string> s = {">",">^","^","^<","<","<v","v","v>"};
	
	int T,A,B;
	cin>>T>>A>>B;
	
	rep(i,8){
		int a = 0,b = 0;
		vector<string> ans(1,s[i]);
		a += dx[i];
		b += dy[i];
		rep(j,T-1){
			int k;
			if(a==A&&b==B)k = 0;
			else if(a==A){
				if(b<B)k = 0;
				else k = 4;
			}
			else if(b==B){
				if(a<A)k = 2;
				else k = 6;
			}
			else{
				if(a<A&&b<B)k = 1;
				if(a>A&&b<B)k = 3;
				if(a>A&&b>B)k = 5;
				if(a>A&&b>B)k = 7;
			}
			ans.push_back(s[k]);
			a += dx[k];
			b += dy[k];
			//if(i==1)cout<<k<<endl;
		}
		if(a==A&&b==B){
			cout<<"YES"<<endl;
			rep(i,T)cout<<ans[i]<<endl;
			return 0;
		}
	}
	
	cout<<"NO"<<endl;
	
	return 0;
}