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답안 #170706

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
170706 2019-12-26T06:14:11 Z Lightning 홀-짝 수열 (IZhO11_oddeven) Python 3
100 / 100
 27 ms 3428 KB 
# your code goes here
def sum(n):
	return (n * (n + 1) // 2)

n = int(input())
l = 1
r = n
while(l < r):
	mid = (l + r) // 2
	if(sum(mid) >= n):
		r = mid
	else:
		l = mid + 1
fir = (r * (r - 2)) + 2
pos = n - sum(r - 1)
print(fir + (2 * (pos - 1)))

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 3428 KB Output is correct
2 Correct 25 ms 3300 KB Output is correct
3 Correct 24 ms 3300 KB Output is correct
4 Correct 25 ms 3300 KB Output is correct
5 Correct 27 ms 3300 KB Output is correct
6 Correct 24 ms 3300 KB Output is correct
7 Correct 25 ms 3300 KB Output is correct
8 Correct 24 ms 3396 KB Output is correct
9 Correct 24 ms 3300 KB Output is correct
10 Correct 26 ms 3292 KB Output is correct
11 Correct 25 ms 3324 KB Output is correct
12 Correct 25 ms 3300 KB Output is correct
13 Correct 25 ms 3300 KB Output is correct
14 Correct 24 ms 3304 KB Output is correct
15 Correct 25 ms 3300 KB Output is correct
16 Correct 24 ms 3304 KB Output is correct
17 Correct 25 ms 3400 KB Output is correct
18 Correct 25 ms 3300 KB Output is correct
19 Correct 25 ms 3300 KB Output is correct
20 Correct 26 ms 3300 KB Output is correct
21 Correct 25 ms 3300 KB Output is correct
22 Correct 25 ms 3300 KB Output is correct