T, A, B = map(int, input().split())
if T < max(A, B):
    print("NO")
    exit()

ansA, ansB = [1] * A, [1] * B
for _ in range((T - len(ansA))//2):
    ansA.extend([1, -1])
for _ in range((T - len(ansB))//2):
    ansB.extend([1, -1])
ansA.extend([0] * (T - len(ansA)))
ansB.extend([0] * (T - len(ansB)))
ansB.reverse()

print("YES")
for a, b in zip(ansA, ansB):
    ans = ""
    if a == 1:
        ans += "^"
    elif a == -1:
        ans += "v"
    if b == 1:
        ans += ">"
    elif b == -1:
        ans += "<"
    print(ans)