Submission #2522424
Source Code Expand
#include <bits/stdc++.h> using std::cout; using std::endl; using std::cin; int main(){ int n; cin >> n; std::vector<long> a(n); long x = 0; for(int i = 0; i < n; i++){ cin >> a[i]; x ^= a[i]; } int ans = 0; for(int i = 30; i >= 0; i--){ if((x >> i) & 1 == 0) continue; for(int j = 0; j < n; j++){ if((a[j] ^ (a[j] - 1)) == (1 << (i + 1)) - 1){ x ^= a[j] ^ (a[j] - 1); ans++; break; } } } if(x) cout << -1 << endl; else cout << ans << endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | ecasdqina |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 527 Byte |
Status | WA |
Exec Time | 45 ms |
Memory | 1024 KB |
Judge Result
Set Name | Sample | All | ||||||
---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 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 | WA | 45 ms | 1024 KB |
003.txt | WA | 15 ms | 768 KB |
004.txt | AC | 16 ms | 640 KB |
005.txt | AC | 13 ms | 512 KB |
006.txt | WA | 40 ms | 1024 KB |
007.txt | WA | 40 ms | 1024 KB |
008.txt | WA | 40 ms | 1024 KB |
009.txt | WA | 41 ms | 1024 KB |
010.txt | WA | 41 ms | 1024 KB |
011.txt | WA | 40 ms | 1024 KB |
012.txt | WA | 40 ms | 1024 KB |
013.txt | WA | 40 ms | 1024 KB |
014.txt | WA | 41 ms | 1024 KB |
015.txt | WA | 40 ms | 1024 KB |
016.txt | AC | 40 ms | 1024 KB |
017.txt | AC | 40 ms | 1024 KB |
018.txt | WA | 40 ms | 1024 KB |
019.txt | WA | 40 ms | 1024 KB |
020.txt | AC | 40 ms | 1024 KB |
021.txt | AC | 5 ms | 256 KB |
022.txt | AC | 5 ms | 384 KB |
023.txt | AC | 42 ms | 1024 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |