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Submission #337865

# Submission time Handle Problem Language Result Execution time Memory
337865 2020-12-22T03:53:01 Z BY_KUTBILIM Odd-even (IZhO11_oddeven) Python 3
100 / 100
 20 ms 2816 KB 
a = (input())
a = int(a)
if a == 1:
    print(1)
    exit(0)
l = 1;
r = 1e50
while(r > l):
    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 + 1
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

# Verdict Execution time Memory Grader output
1 Correct 20 ms 2796 KB Output is correct
2 Correct 16 ms 2796 KB Output is correct
3 Correct 16 ms 2796 KB Output is correct
4 Correct 16 ms 2796 KB Output is correct
5 Correct 16 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 2796 KB Output is correct
9 Correct 16 ms 2816 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 2796 KB Output is correct
14 Correct 16 ms 2796 KB Output is correct
15 Correct 16 ms 2796 KB Output is correct
16 Correct 16 ms 2796 KB Output is correct
17 Correct 16 ms 2796 KB Output is correct
18 Correct 17 ms 2796 KB Output is correct
19 Correct 16 ms 2796 KB Output is correct
20 Correct 17 ms 2796 KB Output is correct
21 Correct 16 ms 2796 KB Output is correct
22 Correct 16 ms 2796 KB Output is correct