#include <iostream>
#include <algorithm>

using namespace std;

#define REP(i,a,b) for(int i=a;i<(int)b;i++)
#define rep(i,n) REP(i,0,n)

int main() {

  int T, A, B; cin >> T >> A >> B;
  if(max(A,B) < T) { cout << "NO\n"; return 0; }
  cout << "YES\n";
  int u = max(A,B)-T;
  rep(i, u-A) { cout << "^\n"; }
  rep(i, u-B) { cout << ">\n"; }
  rep(i, T) { cout << ">^\n"; }

  return 0;
}