Submission #3220426

Source Code Expand

N = int(input())
A = [int(input()) for i in range(N)]

diff = []
XOR = 0
for a in A:
    XOR ^= a
    diff.append(a ^ a-1)

diff.sort(reverse=True)
ans = 0
for d in diff:
    if XOR & ((d + 1) >> 1):
        ans += 1
        XOR ^= d


print(ans if XOR == 0 else -1)

Submission Info

Submission Time
Task C - Cheating Nim
User AT274
Language Python (3.4.3)
Score 500
Code Size 285 Byte
Status AC
Exec Time 235 ms
Memory 11040 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 17 ms 2940 KB
001.txt AC 17 ms 2940 KB
002.txt AC 206 ms 11036 KB
003.txt AC 139 ms 5528 KB
004.txt AC 121 ms 5400 KB
005.txt AC 73 ms 4380 KB
006.txt AC 227 ms 10572 KB
007.txt AC 231 ms 10584 KB
008.txt AC 220 ms 10576 KB
009.txt AC 228 ms 10588 KB
010.txt AC 232 ms 10576 KB
011.txt AC 220 ms 10576 KB
012.txt AC 224 ms 10596 KB
013.txt AC 221 ms 10588 KB
014.txt AC 235 ms 10596 KB
015.txt AC 226 ms 10600 KB
016.txt AC 223 ms 10592 KB
017.txt AC 220 ms 10588 KB
018.txt AC 222 ms 10504 KB
019.txt AC 221 ms 10592 KB
020.txt AC 221 ms 10584 KB
021.txt AC 35 ms 3700 KB
022.txt AC 37 ms 3700 KB
023.txt AC 208 ms 11040 KB
example0.txt AC 17 ms 2940 KB
example1.txt AC 17 ms 2940 KB