#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=int(a);i<int(b);++i)
using namespace std;
typedef long long ll;
int INF = (1LL << 30) - 1;
int MOD = 1e9+7;
main(){
    int T,Y,X;
    cin >> T >> Y >> X;
    if(T < max(Y,X) || T == 1 && max(Y,X) == 0){
        cout << "NO" << endl;
        return 0;
    }   
    cout << "YES" << endl;
    int ny = 0,nx = 0;
    string str[] = {"^", ">","v","<"};
    if(max(Y,X) == 0 && T % 2){
        cout << "^\n>\nv<\n";
        T -= 3;
    }else{
        if((T - max(Y,X)) % 2){
            if(Y == 0){
                cout << str[0] << endl;
                ny = 1;
            }else{
                cout << str[3] << endl;
                nx = -1;
            }
            T--;
        }
        while(max(abs(Y - ny),abs(X - nx))){
            if(ny != Y){
                cout << (ny < Y ? str[0] : str[2]);
                ny += (ny < Y ? 1 : -1);
            }
            if(nx != X){
                cout << (nx < X ? str[1] : str[3]);
                nx += (nx < X ? 1 : -1);
            }
            cout << endl;
        }
    }
    rep(i,0,(T - max(Y,X)) / 2){
        cout << ">\n<\n";
    }
}