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 Python (3.4.3) (judge verdict: Time Limit Exceeded)

# -*- coding: utf-8 -*-
# 
import math
import sys
import itertools
import numpy as np
import bisect

# いっこ入力
n =int(input())

# n行の数をリストへ
a = [int(input()) for i in range(n)] 

# color
c = [a[0]]

for i in range(1,n):
#    print(c)
    p = bisect.bisect_left(c, a[i])
#    print(p)
    if p ==0:
        c.insert(0,a[i])
    else:
        c[p-1]=a[i]
        c.sort()

print(len(c))