Submission #1014168
Source Code Expand
#include <iostream> using namespace std; int n; int a[100000]; int cnt[100000]; int log2(int x) { int i; for (i = 0; (1 << i) < x; i++); return i; } int main() { int i; cin >> n; for (i = 0; i < n; i++) cin >> a[i]; for (i = 0; i < n; i++) cnt[log2(a[i] & -a[i])]++; int x = 0; for (i = 0; i < n; i++) x ^= a[i]; int ans = 0; for (i = 29; i >= 0; i--) { if ((x >> i) % 2 == 0) continue; if (cnt[i] == 0) { cout << -1 << endl; return 0; } ans++; x = x ^ ((1 << i) - 1); } cout << ans << endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | startcpp |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 566 Byte |
Status | AC |
Exec Time | 51 ms |
Memory | 640 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 500 / 500 | ||||
Status |
|
|
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 | 3 ms | 256 KB |
001.txt | AC | 3 ms | 256 KB |
002.txt | AC | 51 ms | 640 KB |
003.txt | AC | 19 ms | 512 KB |
004.txt | AC | 20 ms | 384 KB |
005.txt | AC | 16 ms | 384 KB |
006.txt | AC | 48 ms | 640 KB |
007.txt | AC | 48 ms | 640 KB |
008.txt | AC | 49 ms | 640 KB |
009.txt | AC | 49 ms | 640 KB |
010.txt | AC | 49 ms | 640 KB |
011.txt | AC | 49 ms | 640 KB |
012.txt | AC | 48 ms | 640 KB |
013.txt | AC | 49 ms | 640 KB |
014.txt | AC | 48 ms | 640 KB |
015.txt | AC | 49 ms | 640 KB |
016.txt | AC | 49 ms | 640 KB |
017.txt | AC | 49 ms | 640 KB |
018.txt | AC | 48 ms | 640 KB |
019.txt | AC | 48 ms | 640 KB |
020.txt | AC | 50 ms | 640 KB |
021.txt | AC | 7 ms | 256 KB |
022.txt | AC | 7 ms | 256 KB |
023.txt | AC | 48 ms | 640 KB |
example0.txt | AC | 2 ms | 256 KB |
example1.txt | AC | 3 ms | 256 KB |