結果

問題 No.1564 Sum of Products of Pairs
ユーザー McGregorshMcGregorsh
提出日時 2023-05-24 21:53:28
言語 PyPy3
(7.3.15)
結果
WA  
実行時間 -
コード長 1,843 bytes
コンパイル時間 418 ms
コンパイル使用メモリ 86,972 KB
実行使用メモリ 122,908 KB
最終ジャッジ日時 2023-08-25 13:50:41
合計ジャッジ時間 11,970 ms
ジャッジサーバーID
(参考情報)
judge12 / judge13
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 222 ms
92,004 KB
testcase_01 AC 229 ms
92,152 KB
testcase_02 AC 225 ms
92,248 KB
testcase_03 WA -
testcase_04 WA -
testcase_05 WA -
testcase_06 WA -
testcase_07 WA -
testcase_08 WA -
testcase_09 WA -
testcase_10 WA -
testcase_11 WA -
testcase_12 WA -
testcase_13 WA -
testcase_14 WA -
testcase_15 WA -
testcase_16 WA -
testcase_17 WA -
testcase_18 WA -
testcase_19 WA -
testcase_20 WA -
testcase_21 WA -
testcase_22 WA -
testcase_23 WA -
testcase_24 WA -
testcase_25 WA -
testcase_26 WA -
testcase_27 WA -
testcase_28 AC 223 ms
92,160 KB
testcase_29 AC 223 ms
91,952 KB
testcase_30 AC 222 ms
92,160 KB
testcase_31 AC 220 ms
92,240 KB
testcase_32 AC 220 ms
92,256 KB
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ソースコード

diff #

import sys, re
from fractions import Fraction
from math import ceil, floor, sqrt, pi, factorial, gcd
from copy import deepcopy
from collections import Counter, deque, defaultdict
from heapq import heapify, heappop, heappush
from itertools import accumulate, product, combinations, combinations_with_replacement, permutations
from bisect import bisect, bisect_left, bisect_right
from functools import reduce, lru_cache
from decimal import Decimal, getcontext, ROUND_HALF_UP
def i_input(): return int(input())
def i_map(): return map(int, input().split())
def i_list(): return list(i_map())
def i_row(N): return [i_input() for _ in range(N)]
def i_row_list(N): return [i_list() for _ in range(N)]
def s_input(): return input()
def s_map(): return input().split()
def s_list(): return list(s_map())
def s_row(N): return [s_input for _ in range(N)]
def s_row_str(N): return [s_list() for _ in range(N)]
def s_row_list(N): return [list(s_input()) for _ in range(N)]
def lcm(a, b): return a * b // gcd(a, b)
def get_distance(x1, y1, x2, y2):
	  d = sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2)
	  return d
def rotate(table):
   	  n_fild = []
   	  for x in zip(*table[::-1]):
   	  	  n_fild.append(x)
   	  return n_fild
sys.setrecursionlimit(10 ** 7)
INF = float('inf')
MOD = 10 ** 9 + 7
MOD2 = 998244353
alpa = 'abcdefghijklmnopqrstuvwxyz'
ALPA = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
#input = sys.stdin.readline


def main():
   
   N = int(input())
   A = i_list()
   
   base = 0
   for i in range(0, 2*N, 2):
   	  base += A[i] * A[i+1]
   
   ans = base
   for i in range(1, 2*N-1, 2):
   	  a, b = A[i], A[i+1]
   	  nowa = a * A[i-1]
   	  nowb = b * A[i+2]
   	  nxta = b * A[i-1]
   	  nxtb = a * A[i+2]
   	  score = (nowa + nowb) - (nxta + nxtb)
   	  ans = max(ans, base - score)
   print(ans)
   
   
if __name__ == '__main__':
    main()
    
    
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