N = int(input())
G = [[] for _ in range(N)]
for _ in range(N - 1):
    u,v = map(int,input().split())
    u -= 1
    v -= 1
    G[u].append(v)
    G[v].append(u)
stack = [(0,-1),(~0,-1)]
dp = [[0,1] for _ in range(N)]
while stack:
    now,parent = stack.pop()
    if now < 0:
        now = ~now
        for v in G[now]:
            if v == parent:continue
            stack.append((v,now))
            stack.append((~v,now))
        continue
    for v in G[now]:
        if v == parent:continue
        dp[now][0] += max(dp[v])
        dp[now][1] += max(dp[v][0],dp[v][1] - 1)
print(max(dp[0]))
#print(dp)