import sys

sys.setrecursionlimit(10**6)
input = sys.stdin.readline
mod = 10**9 + 7

N = int(input())
graph = [[] for i in range(N)]


def dfs(v, p):
    s1, s0 = 1, 0
    for u in graph[v]:
        if u == p:
            continue
        sum_s1, sum_s0 = dfs(u, v)
        s1 += sum_s0
        s0 += max(sum_s1, sum_s0)

    return s1, s0


for i in range(N - 1):
    a, b = map(int, input().split())
    a, b = a - 1, b - 1
    graph[a].append(b)
    graph[b].append(a)

print(max(dfs(0, -1)))