#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){
        cout << "NO" << endl;
        return 0;
    }
    cout << "YES" << endl;
    int x = 0, y = 0;
    while(1){
        if(X-x <= 1 && Y-y <= 1) break;
        if(X-x == Y-y){
            cout << "^>" << endl;
            x++; y++; T--; continue;
        }
        if(Y-y > X-x){
            cout << "^" << endl;
            y++; T--;
        } else {
            cout << ">" << endl;
            x++; T--;
        }
    }
    if(Y-y == 0 && X-x != 0){
        if(T % 2 == 0){
            cout << "v" << endl;
            y--; T--;
        } else {
            REP(i,T/2){
                cout << ">" << endl;
                cout << "<" << endl;
            }
            cout << ">" << endl;
            return 0;
        }
    }
    if(Y-y != 0 && X-x == 0){
        if(T % 2 == 0){
            cout << "<" << endl;
            x--; T--;
        } else {
            REP(i,T/2){
                cout << ">" << endl;
                cout << "<" << endl;
            }
            cout << "^" << endl;
            return 0;
        }
    }
    if(X-x != 0 && Y-y != 0){
        while(T > 2){
            cout << "<" << endl;
            cout << ">" << endl;
            T -= 2;
        }
        if(T == 2){
            cout << ">" << endl;
            cout << "^" << endl;
        } else {
            cout << "^>" << endl;
        }
        return 0;
    }
}