Submission #1767627
Source Code Expand
#include <bits/stdc++.h> #define rep(i, n) for (lli i = 0; i < (n); i++) #define rrep(i, n) for (lli i = (n)-1; i >= 0; i--) using namespace std; using lli = long long int; int main() { int n; cin >> n; lli a[100500]; rep(i, n) cin >> a[i]; lli x = 0; rep(i, n) x ^= a[i]; int ans = 0; for (int i = 32; i >= 1; i--) { rep(j, n) { if (((1LL << i) - 1) == (a[j] ^ (a[j] - 1))) { if ((x >> (i - 1)) & 1) { x ^= a[j] ^ (a[j] - 1); ans++; } } } } cout << (x == 0 ? ans : -1) << endl; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | uenoku |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 685 Byte |
Status | AC |
Exec Time | 45 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 | 45 ms | 1024 KB |
003.txt | AC | 15 ms | 768 KB |
004.txt | AC | 17 ms | 640 KB |
005.txt | AC | 14 ms | 512 KB |
006.txt | AC | 43 ms | 1024 KB |
007.txt | AC | 43 ms | 1024 KB |
008.txt | AC | 43 ms | 1024 KB |
009.txt | AC | 43 ms | 1024 KB |
010.txt | AC | 43 ms | 1024 KB |
011.txt | AC | 43 ms | 1024 KB |
012.txt | AC | 43 ms | 1024 KB |
013.txt | AC | 43 ms | 1024 KB |
014.txt | AC | 43 ms | 1024 KB |
015.txt | AC | 43 ms | 1024 KB |
016.txt | AC | 43 ms | 1024 KB |
017.txt | AC | 43 ms | 1024 KB |
018.txt | AC | 43 ms | 1024 KB |
019.txt | AC | 43 ms | 1024 KB |
020.txt | AC | 43 ms | 1024 KB |
021.txt | AC | 5 ms | 384 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 |