Submission #16,389

2025-04-29 10:48:35

pypy3

Accepted 100/100

94ms

31980 KiB

# UUID: 978b266d-3979-4781-adb2-6bf97691c787
N=int(input())
A=[int(x) for x in input().split()]
A.sort()
r=set()
cur = N-1
found=[]
while cur > 0:
    if A[cur]==A[cur-1]:
        found.append(A[cur])
        if len(found)>=2:
            print(found[-1]*found[-2])
            exit()
        cur-=2
    else:
        cur-=1


print(0)

	Sum	Test	Verdict	Time	Memory
subtask1	0/0
		1	Accepted	43ms	19432 KiB
		2	Accepted	39ms	19404 KiB
		3	Accepted	39ms	19428 KiB
subtask2	10/10
		4	Accepted	45ms	19460 KiB
		5	Accepted	43ms	19432 KiB
		6	Accepted	39ms	19388 KiB
		7	Accepted	39ms	19436 KiB
		8	Accepted	39ms	19436 KiB
subtask3	10/10
		9	Accepted	43ms	19332 KiB
		10	Accepted	43ms	19500 KiB
		11	Accepted	39ms	19400 KiB
		12	Accepted	39ms	19428 KiB
		13	Accepted	68ms	31204 KiB
		14	Accepted	65ms	31432 KiB
subtask4	15/15
		15	Accepted	43ms	19328 KiB
		16	Accepted	46ms	19360 KiB
		17	Accepted	39ms	19440 KiB
		18	Accepted	39ms	19428 KiB
		19	Accepted	39ms	19432 KiB
		20	Accepted	45ms	19436 KiB
		21	Accepted	43ms	19432 KiB
		22	Accepted	39ms	19468 KiB
		23	Accepted	46ms	19436 KiB
		24	Accepted	39ms	19492 KiB
subtask5	20/20
		25	Accepted	46ms	21380 KiB
		26	Accepted	54ms	21448 KiB
		27	Accepted	54ms	21632 KiB
		28	Accepted	48ms	21464 KiB
		29	Accepted	56ms	21460 KiB
		30	Accepted	54ms	21516 KiB
		31	Accepted	48ms	21572 KiB
		32	Accepted	46ms	21444 KiB
subtask6	15/15
		33	Accepted	39ms	19516 KiB
		34	Accepted	71ms	31096 KiB
		35	Accepted	74ms	31276 KiB
		36	Accepted	74ms	31124 KiB
		37	Accepted	64ms	31212 KiB
		38	Accepted	64ms	31252 KiB
		39	Accepted	72ms	31212 KiB
		40	Accepted	52ms	21320 KiB
		41	Accepted	63ms	31980 KiB
subtask7	30/30
		42	Accepted	89ms	31808 KiB
		43	Accepted	92ms	31120 KiB
		44	Accepted	85ms	31100 KiB
		45	Accepted	85ms	31172 KiB
		46	Accepted	94ms	31212 KiB
		47	Accepted	86ms	31252 KiB
		48	Accepted	90ms	31208 KiB
		49	Accepted	83ms	31164 KiB
		50	Accepted	90ms	31976 KiB
		51	Accepted	82ms	31944 KiB