N = int(input())
cnt = sum([i % 2 for i in range(1, N + 1)])
print(cnt/N) N = int(input()) N int(input()) int input() input i % 2 for i in range(1, N + 1) for i in range(1, N + 1) i range(1, N + 1) range 1 N + 1 N 1 for i in range(1, N + 1) i % 2 i 2 cnt = sum([i % 2 for i in range(1, N + 1)]) cnt sum([i % 2 for i in range(1, N + 1)]) sum [i % 2 for i in range(1, N + 1)] print(cnt/N) print cnt/N cnt N N = int(input()) int(input()) N cnt = sum([i % 2 for i in range(1, N + 1)]) sum([i % 2 for i in range(1, N + 1)]) cnt
N = int(input())
cnt = sum([i % 2 for i in range(1, N + 1)])
print(cnt/N)
