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

if T==1:
    if (A,B)==(1,0):
        print("YES")
        print("^")
    elif (A,B)==(0,1):
        print("YES")
        print(">")
    elif (A,B)==(1,1):
        print("YES")
        print("^>")
    else:
        print("NO")
    exit()

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

X=["^"]*A
while len(X)<T-1:
    X.append("v")
    X.append("^")

if len(X)==T-1:
    X.insert(0,"")

Y=[">"]*B
while len(Y)<T-1:
    Y.append("<")
    Y.append(">")

if len(Y)==T-1:
    Y.insert(1,"")

print("YES")
for x,y in zip(X,Y):
    print(x+y)