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답안 #337848

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
337848 2020-12-22T03:16:10 Z beksultan04 홀-짝 수열 (IZhO11_oddeven) Python 3
100 / 100
 18 ms 3072 KB 
a = (input())
a = int(a)
if a == 1:
    print(1)
    exit(0)
l = 1;
r = 1e50;
while (r-l>1):
    m = int((l+r)//2)
    x = int((l+r)//2)
    x = int((x*(x+1))//2)
    if int(x) >= int(a):
        r = m
    else:
        l = m
x = int((r*(r+1))//2)
if x >= a:
    l = r
c = l*l
cnt = l*(l+1)//2
c -= (cnt-a)*2


print (c)

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 2796 KB Output is correct
2 Correct 16 ms 2796 KB Output is correct
3 Correct 17 ms 3072 KB Output is correct
4 Correct 16 ms 2796 KB Output is correct
5 Correct 18 ms 2796 KB Output is correct
6 Correct 16 ms 2796 KB Output is correct
7 Correct 16 ms 2796 KB Output is correct
8 Correct 16 ms 2944 KB Output is correct
9 Correct 16 ms 2796 KB Output is correct
10 Correct 17 ms 2796 KB Output is correct
11 Correct 16 ms 2796 KB Output is correct
12 Correct 16 ms 2796 KB Output is correct
13 Correct 16 ms 2944 KB Output is correct
14 Correct 16 ms 2796 KB Output is correct
15 Correct 16 ms 2796 KB Output is correct
16 Correct 17 ms 2796 KB Output is correct
17 Correct 16 ms 2796 KB Output is correct
18 Correct 16 ms 2796 KB Output is correct
19 Correct 16 ms 2796 KB Output is correct
20 Correct 16 ms 2796 KB Output is correct
21 Correct 16 ms 2796 KB Output is correct
22 Correct 17 ms 2796 KB Output is correct