#include <bits/stdc++.h>
using namespace std;
#define REP(i, n)           for(int(i)=0;(i)<(n);++(i))

int main(){
    int T,Y,X;
    cin >> T >> Y >> X;

    if(T < Y || T < X || (X == 0 && Y == 0 && T == 1)){
        cout << "NO" << endl;
        return 0;
    }
    cout << "YES" << endl;
    int x = 0, y = 0;
    while(T > 0){
        int dx = X - x, dy = Y - y;
        if(dx <= 1 && dy <= 1){
            if(dx == 0 && dy == 0 && T % 2 != 0){
                cout << "<" << endl;
                x--; T--; continue;
            }
            if(dy == 0 && T % 2 == 0){
                cout << "v" << endl;
                y--; T--; continue;
            }
            if(dx == 0 && T % 2 == 0){
                cout << "<" << endl;
                x--; T--; continue;
            }
            if(dx && dy && T % 2 == 0 && T >= 2){
                cout << "^" << endl;
                y++; T--; continue;
            }
            if(T == 1){
                string s;
                if(dx) s += ">";
                if(dy) s += "^";
                cout << s << endl;
                T--;
            } else {
                cout << ">" << endl << "<" << endl;
                T -= 2;
            }
            continue;
        }
        if(dx == dy){
            cout << "^>" << endl;
            x++; y++; T--; continue;
        }
        if(dy > dx){
            cout << "^" << endl;
            y++; T--;
        } else {
            cout << ">" << endl;
            x++; T--;
        }
    }
}