T, A, B = map(int, input().split())
first_arrive = max(A, B)
rem = T - first_arrive
if rem < 0 or (rem == 1 and A == B == 0):
    print('NO')
else:
    print('YES')
    if rem % 2 == 1:
        if A == 0:
            print('v')
            A += 1
        elif B== 0:
            print('<')
            B += 1
        elif A < B:
            print('^')
            A -= 1
        else:
            print('^')
            A -= 1
    
    diag = min(A, B)
    for _ in range(diag):
        print('^>')
    
    if A > B:
        for _ in range(first_arrive - diag):
            print('^')
    else:
        for _ in range(first_arrive - diag):
            print('>')

    for _ in range(rem//2):
        print('>')
        print('<')