Submission #3195507
Source Code Expand
#include <iostream> using namespace std; int main() { int n; cin >> n; int a[n], x = 0, ans = 0; for (int i = 0; i < n; i++) { cin >> a[i]; x ^= a[i]; } bool used[n] = {}; while (x != 0) { int e = 0; while (x >= 2 << e) e++; for (int i = 0; i < n; i++) if (a[i] % (2<<e) == 1<<e && !used[i]) { x ^= a[i] ^ (a[i]-1); a[i]--; used[i] = true; ans++; break; } if (x >= (1 << e)) { cout << "-1\n"; return 0; } } cout << ans << endl; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | kozima |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 505 Byte |
Status | AC |
Exec Time | 59 ms |
Memory | 768 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 | 1 ms | 256 KB |
001.txt | AC | 1 ms | 256 KB |
002.txt | AC | 59 ms | 768 KB |
003.txt | AC | 17 ms | 512 KB |
004.txt | AC | 20 ms | 512 KB |
005.txt | AC | 17 ms | 384 KB |
006.txt | AC | 54 ms | 768 KB |
007.txt | AC | 53 ms | 768 KB |
008.txt | AC | 54 ms | 768 KB |
009.txt | AC | 53 ms | 768 KB |
010.txt | AC | 54 ms | 768 KB |
011.txt | AC | 53 ms | 768 KB |
012.txt | AC | 54 ms | 768 KB |
013.txt | AC | 53 ms | 768 KB |
014.txt | AC | 54 ms | 768 KB |
015.txt | AC | 53 ms | 768 KB |
016.txt | AC | 54 ms | 768 KB |
017.txt | AC | 54 ms | 768 KB |
018.txt | AC | 53 ms | 768 KB |
019.txt | AC | 53 ms | 768 KB |
020.txt | AC | 54 ms | 768 KB |
021.txt | AC | 6 ms | 256 KB |
022.txt | AC | 6 ms | 256 KB |
023.txt | AC | 53 ms | 768 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |