#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

#define RREP(i,s,e) for (i = e-1; i >= s; i--)
#define rrep(i,n) RREP(i,0,n)
#define REP(i,s,e) for (i = s; i < e; i++)
#define rep(i,n) REP(i,0,n)
#define INF 1e8

typedef long long ll;

int main() {
    int t, a, b, x, y;
    cin >> t >> a >> b;
    if (t < max(a,b)) {
        cout << "NO" << endl;
        return 0;
    }
    cout << "YES" << endl;
    x = y = 0;
    while (t > 0) {
        if (t > b) {
            if (y < a) {
                cout << "^" << endl;
                y++;
            }
            else {
                cout << "v" << endl;
                y--;
            }
        }
        else {
            if (y < a) {
                cout << "^";
                y++;
            }
            else if (y > a) {
                cout << "v";
                y--;
            }
            cout << ">" << endl;
            x++;
        }
        t--;
    }
    return 0;
}