제출 #632805

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
632805		beaconmc	Global Warming (CEOI18_glo)	Pypy 3	17 / 100	183 ms	45972 KiB

glo

from bisect import *

n,x = map(int, input().split())

arr = list(map(int, input().split()))


sussy2 = [0 for i in range(n)]
sussy = [0 for i in range(n)]

def LIS(lis):
    dp = []
    cur = n-1
    for i in lis:
        sus = bisect_left(dp,i)
        if sus==len(dp):
            dp.append(i)
        else:
            dp[sus] = i
        sussy2[cur] = len(dp)
        cur-=1

    return len(dp)

def LIS2(lis):
    dp = []
    cur = 0
    for i in lis:
        sus = bisect_left(dp,i)
        if sus==len(dp):
            dp.append(i)
        else:
            dp[sus] = i
        sussy[cur] = len(dp)
        cur+=1

    return len(dp)
LIS2(arr)
arr = [-i for i in arr]
arr.reverse()
LIS(arr)
ans = 0

for i in range(n-1):
    ans = max(ans, sussy[i]+sussy2[i+1])
print(ans)

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 13
• Subtask 4: 0 / 10
• Subtask 5: 0 / 20
• Subtask 6: 17 / 17
• Subtask 7: 0 / 25