T, A, B = map(int, input().split())

dis = max(A, B)

if dis > T:
    print('NO')
elif (A, B) == (0, 0):
    if T % 2 == 0:
        print('YES')
        print('^\nv\n' * (T // 2), end = '')
    elif T == 1:
        print('NO')
    else:
        print('YES')
        print('^\n>\nv<\n' + '^\nv\n' * ((T - 3) // 2), end = '')
elif A == 0:
    print('YES')

    if (T - B) % 2 == 0:
        print('>\n' * B + '^\nv\n' * ((T - B) // 2), end = '')
    else:
        print('>\n' * (B - 1) + '^>\n' + 'v\n' + '^\nv\n' * ((T - B) // 2), end = '')
elif B == 0:
    print('YES')

    if (T - A) % 2 == 0:
        print('^\n' * A + '^\nv\n' * ((T - A) // 2), end = '')
    else:
        print('^\n' * (A - 1) + '^>\n' + '<\n' + '^\nv\n' * ((T - A) // 2), end = '')
else:
    print('YES')
 
    if A == 0:
        if A % 2 == 0:
            print('^' * A + '^\nv\n' * ((T - A) // 2))
        else:
            print('^' * (A - 1) + '^\nv\n' * ((T - A) // 2))
    if A > B:
        if (T - dis) % 2 == 0:
            print('^\n' * (A - B) + '^>\n' * B + '^\nv\n' * ((T - dis) // 2), end = '')
        else:
            print('^\n' * (A - B) + '^>\n' * (B - 1) + '^\n' + '>\n' + '^\nv\n' * ((T - dis) // 2), end = '')
        pass
    else:
        if (T - dis) % 2 == 0:
            print('>\n' * (B - A) + '^>\n' * A + '^\nv\n' * ((T - dis) // 2), end = '')
        else:
            print('>\n' * (B - A) + '^>\n' * (A - 1) + '^\n' + '>\n' + '^\nv\n' * ((T - dis) // 2), end = '')
        pass