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답안 #523244

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
523244 2022-02-07T09:11:59 Z redstonegamer22 홀-짝 수열 (IZhO11_oddeven) Python 3
100 / 100
 16 ms 2892 KB 
import math

def solve(n):
    n = int(n)

    m = math.isqrt(2 * n) - 5

    while m <= -1 or (m + 1) * (m + 2) // 2 < n:
        m = m + 1


    a = m * (m + 1) // 2 + m * (m - 1) // 2
    b = n - m * (m + 1) // 2


    ans = a + 2 * b - 1

    return ans

print(solve(input()))

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 2764 KB Output is correct
2 Correct 14 ms 2804 KB Output is correct
3 Correct 15 ms 2780 KB Output is correct
4 Correct 14 ms 2840 KB Output is correct
5 Correct 16 ms 2844 KB Output is correct
6 Correct 14 ms 2840 KB Output is correct
7 Correct 14 ms 2844 KB Output is correct
8 Correct 13 ms 2764 KB Output is correct
9 Correct 15 ms 2764 KB Output is correct
10 Correct 14 ms 2740 KB Output is correct
11 Correct 12 ms 2840 KB Output is correct
12 Correct 14 ms 2844 KB Output is correct
13 Correct 13 ms 2800 KB Output is correct
14 Correct 13 ms 2840 KB Output is correct
15 Correct 12 ms 2740 KB Output is correct
16 Correct 13 ms 2764 KB Output is correct
17 Correct 13 ms 2764 KB Output is correct
18 Correct 13 ms 2764 KB Output is correct
19 Correct 14 ms 2892 KB Output is correct
20 Correct 13 ms 2764 KB Output is correct
21 Correct 12 ms 2840 KB Output is correct
22 Correct 14 ms 2768 KB Output is correct