T, A, B = map(int, input().split())
first_arrive = max(A, B)
rem = T - first_arrive
if rem <= 1:
    print('NO')
else:
    print('YES')
    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('>')
    
    if rem >= 3 and rem % 2 != 0:
        print('>')
        print('^')
        print('<v')
        rem -= 3
    
    for _ in range(rem//2):
        print('>')
        print('<')