#include <iostream>
using namespace std;
int main(void){
    int T,A,B;
    cin >> T >> A >> B;
    int x,y;
    if(T < A || T < B){
        cout << "NO" << endl;
    }else{
        cout << "YES" << endl;
        x = y = 0;
        int i = 0;
        while(T - i){
            if((A - x) + (B - y) == T - i){
                if(A - x > 0){
                    x++;
                    cout << "^" << endl;
                }else{
                    y++;
                    cout << ">" << endl;
                }
            }else if((A - x) + (B - y) > T - i){
                cout << "^>" << endl;
                x++;
                y++;
            }else if((A - x) == (B - y) == T - i){
                cout << "^>" << endl;
                x++;
                y++;
            }else{
                if((A - x) + (B - y) == (T - i) - 1){
                    cout << "^<" << endl;
                    x++;
                    y--;
                }else{
                    cout << "<" << endl;
                    y--;
                }
            }
            i++;
        }
    }
}