Submission #1247868
Source Code Expand
#include <bits/stdc++.h> using namespace std; using ll = long long; int main() { int N; cin >> N; vector<int> v(N); vector<int> u(N); int xsum = 0; for(int i=0; i<N; ++i) { cin >> v[i]; u[i] = v[i] ^ (v[i] - 1); xsum ^= v[i]; } sort(u.begin(), u.end()); u.erase(unique(u.begin(), u.end()), u.end()); int res = 0; for(int i=30; i>=0; --i) { if(xsum & (1 << i) && binary_search(u.begin(), u.end(), (1 << (i+1)) - 1)) { xsum ^= (1 << (i+1)) - 1; res++; } } if(xsum != 0) { cout << -1 << endl; } else { cout << res << endl; } }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | vjudge1 |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 668 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 | 44 ms | 1024 KB |
007.txt | AC | 44 ms | 1024 KB |
008.txt | AC | 44 ms | 1024 KB |
009.txt | AC | 44 ms | 1024 KB |
010.txt | AC | 44 ms | 1024 KB |
011.txt | AC | 44 ms | 1024 KB |
012.txt | AC | 44 ms | 1024 KB |
013.txt | AC | 44 ms | 1024 KB |
014.txt | AC | 44 ms | 1024 KB |
015.txt | AC | 44 ms | 1024 KB |
016.txt | AC | 44 ms | 1024 KB |
017.txt | AC | 44 ms | 1024 KB |
018.txt | AC | 44 ms | 1024 KB |
019.txt | AC | 44 ms | 1024 KB |
020.txt | AC | 44 ms | 1024 KB |
021.txt | AC | 5 ms | 256 KB |
022.txt | AC | 5 ms | 256 KB |
023.txt | AC | 42 ms | 1024 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |