Submission #1329368

#	Time	Username	Problem	Language	Result	Execution time	Memory
1329368		nhtlongcs	A Huge Tower (CEOI10_tower)	Pypy 3	100 / 100	334 ms	163796 KiB

tower

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

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

a.sort()

MOD = int(1e9) + 9

ans = 1
s = 0
# print(a)
for i in range(n):
    c = 0
    # print('---')
    for j in range(s, i+1):
        if a[i] - a[j] > d:
            s = j
        else:
            break
    if a[i] - a[s] > d:
        s += 1
    ans = (ans * ((i-s) + 1)) % MOD
    
print(ans)

Compilation message (stdout)

Compiling 'tower.py'...

=======
  adding: __main__.pyc (deflated 24%)

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• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
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• Subtask 20: 5 / 5