local t, a, b = io.read("*n", "*n", "*n")
if t < a or t < b then
  print("NO")
  os.exit()
end
print("YES")
local c = math.min(a, b)
for i = 1, c do
  print("^>")
end
t = t - c
a = a - c
b = b - c
if t == 0 then
  os.exit()
end
if a == 0 then
  if (t - b) % 2 == 1 then
    print("^>")
    print("v")
    b = b - 1
    t = t - 2
  end
  if b == -1 then
    print("<")
    t = t - 1
  else
    for i = 1, b do
      print(">")
    end
    t = t - b
  end
  local ht = t / 2
  for i = 1, ht do
    print(">") print("<")
  end
else
  if (t - a) % 2 == 1 then
    print("^>")
    print("<")
    a = a - 1
    t = t - 2
  end
  if a == -1 then
    print("v")
    t = t - 1
  else
    for i = 1, a do
      print("^")
    end
    t = t - a
  end
  local ht = t / 2
  for i = 1, ht do
    print(">") print("<")
  end
end