#include <iostream>
#include <cmath>
using namespace std;

int main(){
   int t,a,b;
   cin >> t >> a >> b;
   if(max(a,b) > t) cout << "NO" << endl;
   else{
      while(a && b){
         cout << "^>" << endl;
         a--; b--; t--;
      }
      while(a--){
         cout << '^' << endl;
         t--;
      }
      while(b--){
         cout << '>' << endl;
         t--;
      }
      if(!(t & 1)){
         while(t){
            cout << '>' << endl << '<' << endl;
            t -= 2;
         }
      }else{
         if(t == 1) cout << "NO" << endl;
         else{
            while(t){
               cout << "^>" << endl << '<' << endl << 'v' << endl;
               t -= 3;
            }
         }
      }
   }
}