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

if A>T or B>T or (T==1 and A==B==0):
    print("NO")
    exit()

print("YES")

X=[]

k=T-A

for i in range(A):
    X.append("^")

for i in range(k//2):
    X.append("^")
    X.append("v")

Y=[]

k=T-B

for i in range(B):
    Y.append(">")

for i in range(k//2):
    Y.append(">")
    Y.append("<")

ANS=[""]*T

for i in range(len(X)):
    ANS[i]+=X[i]

for i in range(len(Y)):
    ANS[T-1-i]+=Y[i]

for ans in ANS:
    print(ans)