#include<bits/stdc++.h>
using namespace std;
using Int = long long;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}

//INSERT ABOVE HERE
signed main(){
  Int t,a,b;
  cin>>t>>a>>b;
  auto NG=[](){cout<<"NO"<<endl;exit(0);};
  if(t<a) NG();
  if(t<b) NG();

  vector<string> ans(t);
  for(Int i=0;i<t;i++){
    if(i+1<t||a){
      if(a>=0) ans[i]+='^',a--;
      else ans[i]+='v',a++;
    }    
    if(i==0&&((t-b)&1)) continue;
    
    if(b>=0) ans[i]+='>',b--;
    else ans[i]+='<',b++;    
  }
  
  assert(a==0&&b==0);
  cout<<"YES"<<endl;
  for(string s:ans) cout<<s<<endl;
  return 0;
}