Problem:
Score : 500 points

Problem Statement

You are given a sequence with N integers: A = \{ A_1, A_2, \cdots, A_N \}.
For each of these N integers, we will choose a color and paint the integer with that color. Here the following condition must be satisfied:

If A_i and A_j (i < j) are painted with the same color, A_i < A_j.

Find the minimum number of colors required to satisfy the condition.

Constraints

1 \leq N \leq 10^5

0 \leq A_i \leq 10^9

Input

Input is given from Standard Input in the following format:

N
A_1
:
A_N

Output

Print the minimum number of colors required to satisfy the condition.

Sample Input 1

5
2
1
4
5
3

Sample Output 1

2

We can satisfy the condition with two colors by, for example, painting 2 and 3 red and painting 1, 4, and 5 blue.

Sample Input 2

4
0
0
0
0

Sample Output 2

4

We have to paint all the integers with distinct colors.

Solution in PyPy3 (2.4.0) (judge verdict: Wrong Answer)

from bisect import bisect_right
N = int(input())
A = []
for i in range(N):
    A.append(int(input()))

que = []
num = 0
for i in range(N):
    if not que:
        num += 1
        que.append(A[i])
    else:
        k = bisect_right(que, A[i])
        if k == 0:
            num += 1
            que.insert(0, A[i])
        elif k == len(que) and que[-1] == A[i]:
            num += 1
            que.append(A[i])
        elif k == len(que):
            que.pop(-1)
            que.append(A[i])
        else:
            que.pop(k - 1)
            que.insert(k - 1, A[i])

print(num)