Submission
Status:
[PPP][PPP][PPP][PPP][PPPPP]
Subtask/Task Score:
{20/20}{20/20}{20/20}{20/20}{20/20}
Score: 100
User: agnes_chan
Problemset: ปราสาท
Language: python
Time: 0.011 second
Submitted On: 2026-05-06 09:35:56
N = int(input())
k = int((N-1)**0.5)
print(2*k-(N%2==k%2))