#include<iostream>
#include<cstdio>
#include<vector>
#include<queue>
#include<map>
#include<string>
#include<algorithm>
#include<functional>
using namespace std;
#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define RFOR(i,a,b) for (int i=(b)-1;i>=(a);i--)
#define REP(i,n) for (int i=0;i<(n);i++)
#define RREP(i,n) for (int i=(n)-1;i>=0;i--)
#define INF 1<<30
#define MP make_pair
#define mp make_pair
#define pb push_back
#define PB push_back
#define DEBUG(x) cout<<#x<<": "<<x<<endl
#define ll long long
#define ull unsigned long long

int main(){
	int T,A,B;
	cin>>T>>A>>B;
	if(T<A || T<B){cout<<"NO"<<endl;return 0;}
	else{
		cout<<"YES"<<endl;
		vector<string> s(T);
		if((T+A)%2==0) { 
			REP(i,T){
				if(i <(T+A)/2) s[i]+='^';
				else s[i]+='v';
			}
		}else{
			REP(i,T){
				if(i<(T+A-1)/2) s[i]+='^';
				else if(i<T-1) s[i]+='v';
			}
		}
		if((T+B)%2==0) { 
			REP(i,T){
				if(i <(T+B)/2) s[i]+='>';
				else s[i]+='<';
			}
		}else{
			REP(i,T){
				if(i<(T+B-1)/2) s[i]+='>';
				else if(i<T-1) s[i]+='<';
			}
		}
		if(s[T-1].size()==0){ s[T-1]+=s[T-2][1]; s[T-2].erase(1,1);}
		REP(i,T) cout<<s[i]<<endl;
	}
	return 0;
}