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

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    int T,A,B; cin >> T >> A >> B;
    if(T < A || T < B){ cout << "NO" << "\n"; return 0; }

    vector<string> ans(T, string(""));
    int TA = T, TB = T;
    if(A % 2 != TA % 2) TA--;
    rep(i,(TA+A)/2) ans[i] += '^';
    rep(i,(TA-A)/2) ans[i + (TA+A)/2] += 'v';

    if(B % 2 != TB % 2) TB--;
    rep(i,(TB+B)/2) ans[T - 1 - i] += '>';
    rep(i,(TB-B)/2) ans[T - 1 - (i + (TB+B)/2)] += '<';

    int ok = 1;
    rep(i,T) ok &= !ans[i].empty();
    if(ok) {
        cout << "YES" << "\n";
        rep(i,T) cout << ans[i] << "\n";
    } else {
        cout << "NO" << "\n";
    }
}