T,a,b = map(int,input().split())
if T>=max(a,b):
    print("YES")
    for _ in range(min(a,b)-1):
        print("^>")
    if (T-max(a,b))%2==0:
        print("^>")
        if a>=b:
            for _ in range(a-b):
                print("^")
            for _ in range((T-a)//2):
                print("^")
                print("v")
        else:
            for _ in range(b-a):
                print(">")
            for _ in range((T-b)//2):
                print(">")
                print("<")
    else:
        if a>b:
            print("^>")
            print("^>")
            for _ in range(a-b-1):
                print("^")
            for _ in range((T-a)//2):
                print("<")
                print(">")
            print("<")
        elif b>a:
            print("^>")
            print("^>")
            for _ in range(b-a-1):
                print(">")
            for _ in range((T-b)//2):
                print("v")
                print("^")
            print("v")
        else:
            print(">")
            for _ in range((T-a)//2):
                print("^")
                print("v")
            print("^")
else:
    print("NO")