Submission #3927638


Source Code Expand

N=int(input())
S=0
canuse=[False]*40
for i in range(N):
  A=int(input())
  S^=A
  for k in range(40):
    if A&(1<<k):
      canuse[k]=True
      break
ans=0
for k in range(40)[::-1]:
  if S&(1<<k):
    if canuse[k]:
      S^=(1<<(k+1))-1
      ans+=1
    else:
      print(-1)
      exit()
print(ans)

Submission Info

Submission Time
Task C - Cheating Nim
User Chanyuh
Language PyPy3 (2.4.0)
Score 500
Code Size 320 Byte
Status AC
Exec Time 548 ms
Memory 51048 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
AC × 2
AC × 26
Set Name Test Cases
Sample example0.txt, example1.txt
All 000.txt, 001.txt, 002.txt, 003.txt, 004.txt, 005.txt, 006.txt, 007.txt, 008.txt, 009.txt, 010.txt, 011.txt, 012.txt, 013.txt, 014.txt, 015.txt, 016.txt, 017.txt, 018.txt, 019.txt, 020.txt, 021.txt, 022.txt, 023.txt, example0.txt, example1.txt
Case Name Status Exec Time Memory
000.txt AC 183 ms 38256 KB
001.txt AC 168 ms 38256 KB
002.txt AC 537 ms 43736 KB
003.txt AC 492 ms 51048 KB
004.txt AC 411 ms 45272 KB
005.txt AC 340 ms 43880 KB
006.txt AC 531 ms 44504 KB
007.txt AC 536 ms 45272 KB
008.txt AC 548 ms 44504 KB
009.txt AC 538 ms 44504 KB
010.txt AC 520 ms 44504 KB
011.txt AC 534 ms 44632 KB
012.txt AC 523 ms 44504 KB
013.txt AC 535 ms 44632 KB
014.txt AC 537 ms 45144 KB
015.txt AC 540 ms 44504 KB
016.txt AC 542 ms 44504 KB
017.txt AC 546 ms 44504 KB
018.txt AC 545 ms 44504 KB
019.txt AC 545 ms 44504 KB
020.txt AC 524 ms 45272 KB
021.txt AC 265 ms 42456 KB
022.txt AC 238 ms 42456 KB
023.txt AC 488 ms 42840 KB
example0.txt AC 170 ms 38256 KB
example1.txt AC 168 ms 38256 KB