n = int(input())

black_edges = [tuple(map(int, input().split())) for _ in range(n-1)]

degree_black = [0] * (n + 1)
for u, v in black_edges:
    degree_black[u] += 1
    degree_black[v] += 1

O = sum(1 for i in range(1, n+1) if degree_black[i] % 2 != 0)

k = O // 2 if O != 0 else 0
answer = (n - 1) + (k - 1) if O != 0 else (n - 1)
print(answer)