Submission #2376138
Source Code Expand
#include "bits/stdc++.h" #define in std::cin #define out std::cout #define rep(i,N) for(int i=0;i<N;++i) typedef long long int LL; LL N, x, ans; int main() { in >> N; std::vector<LL>a(N); rep(i, N) { in >> a[i]; x ^= a[i]; } for (LL k = 32; k >= 0; --k) { if (x&(1 << k)) { rep(i, N) { if ((a[i] ^ (a[i] - 1)) == (1LL << (k + 1)) - 1) { x ^= (a[i] ^ (a[i] - 1)); ++ans; break; } } } } out << (x == 0 ? ans : -1) << std::endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | Bwambocos |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 531 Byte |
Status | AC |
Exec Time | 43 ms |
Memory | 1024 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 | 43 ms | 1024 KB |
003.txt | AC | 14 ms | 768 KB |
004.txt | AC | 16 ms | 640 KB |
005.txt | AC | 13 ms | 512 KB |
006.txt | AC | 40 ms | 1024 KB |
007.txt | AC | 40 ms | 1024 KB |
008.txt | AC | 40 ms | 1024 KB |
009.txt | AC | 40 ms | 1024 KB |
010.txt | AC | 40 ms | 1024 KB |
011.txt | AC | 40 ms | 1024 KB |
012.txt | AC | 40 ms | 1024 KB |
013.txt | AC | 40 ms | 1024 KB |
014.txt | AC | 40 ms | 1024 KB |
015.txt | AC | 40 ms | 1024 KB |
016.txt | AC | 40 ms | 1024 KB |
017.txt | AC | 40 ms | 1024 KB |
018.txt | AC | 40 ms | 1024 KB |
019.txt | AC | 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 | 40 ms | 1024 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |