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

if T < A or T < B:
    print("NO")
    exit()

if A % 2 == T % 2:
    a1 = 0
else:
    a1 = 1
a2 = (T + A - a1)//2
a0 = a2 - A

if B % 2 == T % 2:
    b1 = 0
else:
    b1 = 1
b2 = (T + B - b1)//2
b0 = b2 - B

print("YES")
for i in range(T):
    op = ""
    if a1 <= i < a1 + a2:
        op += "^"
    elif a1 <= i:
        op += "v"

    if i < b2:
        op += ">"
    elif i < b0 + b2:
        op += "<"
    print(op)