import sys

sys.setrecursionlimit(10 ** 9)

N = int(input())
T = [[] for _ in range(N)]
for _ in range(N - 1):
    a, b = (int(x) - 1 for x in input().split())
    T[a].append(b)
    T[b].append(a)


def rec(v, parent):
    remove, leave = 0, 1
    for child in T[v]:
        if child == parent:
            continue
        remove_c, leave_c = rec(child, v)
        remove += max(remove_c, leave_c)
        leave += max(remove_c, leave_c - 1)
    return remove, leave


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