双指针，模拟

思路：按照题意，用双指针进行模拟即可

代码：

import sys
input = lambda: sys.stdin.readline().strip()

import math
inf = 10 ** 18

def I():
    return input()

def II():
    return int(input())

def MII():
    return map(int, input().split())

def GMI():
    return map(lambda x: int(x) - 1, input().split())

def LI():
    return input().split()

def LII():
    return list(map(int, input().split()))

def LFI():
    return list(map(float, input().split()))

fmax = lambda x, y: x if x > y else y
fmin = lambda x, y: x if x < y else y
isqrt = lambda x: int(math.sqrt(x))

'''
0 1 3 4
0 6 # 初始状态
0 4 # 交换
1 4 # 前指针移动
1 3 # 交换
2 3 # 前指针移动
tmp[k] < i，无法交换，后指针只能不动
3 3 # 前指针移动
4 3 # 前指针移动，i > j结束
'''

def solve():
    n = II()
    a = LII()
    c = II()

    tmp = []
    for i, x in enumerate(a):
        if x > c:
            tmp.append(i)

    ans = 0
    i, j = 0, n
    k = len(tmp) - 1
    while i <= j:
        if k >= 0 and i <= tmp[k]:
            j = tmp[k]
            k -= 1
        i += 1
        ans += 1

    print(ans)


t = 1
# t = II()
for _ in range(t):
    solve()