import sys # sys.setrecursionlimit(200005) int1 = lambda x: int(x)-1 pDB = lambda *x: print(*x, end="\n", file=sys.stderr) p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr) def II(): return int(sys.stdin.readline()) def LI(): return list(map(int, sys.stdin.readline().split())) def LLI(rows_number): return [LI() for _ in range(rows_number)] def LI1(): return list(map(int1, sys.stdin.readline().split())) def LLI1(rows_number): return [LI1() for _ in range(rows_number)] def SI(): return sys.stdin.readline().rstrip() dij = [(0, 1), (-1, 0), (0, -1), (1, 0)] # dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)] inf = (1 << 63)-1 # inf = (1 << 31)-1 # md = 10**9+7 md = 998244353 n = II() aa = LI() mask = (1 << 10)-1 now = [0] ans = 1 cs = 0 pre = True for i, a in enumerate(aa): nxt = set() cur = set() cs += a for s in now: t = s & a cur.add(t-cs) nxt.add(t) nxt.add((s+a) & mask) ans += len(cur) if pre and a-cs in cur: ans -= 1 now = nxt pre = -cs in cur print(ans) # pDB(a, cs, len(now), ans)