Submission #2119219
Source Code Expand
#include <bits/stdc++.h> using namespace std; #define FOR(i,a,b) for(int i=(a);i<(b);++i) #define rep(i,n) FOR(i,0,n) #define pb emplace_back typedef long long ll; typedef pair<int,int> pint; int a[100001],b[31]; int main(){ int n; cin>>n; int x=0; rep(i,n){ cin>>a[i]; x^=a[i]; int y=a[i]^(a[i]-1); int pc=__builtin_popcount(y); b[pc]=y; } int cnt=0; for(int i=29;i>=0;--i){ if((x>>i)&1){ if(b[i+1]==0){ cout<<-1<<endl; return 0; } else x^=b[i+1],++cnt; } } if(x==0)cout<<cnt<<endl; else cout<<-1<<endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | ts_ |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 720 Byte |
Status | AC |
Exec Time | 44 ms |
Memory | 640 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 | 44 ms | 640 KB |
003.txt | AC | 14 ms | 512 KB |
004.txt | AC | 16 ms | 384 KB |
005.txt | AC | 13 ms | 384 KB |
006.txt | AC | 41 ms | 640 KB |
007.txt | AC | 42 ms | 640 KB |
008.txt | AC | 41 ms | 640 KB |
009.txt | AC | 42 ms | 640 KB |
010.txt | AC | 41 ms | 640 KB |
011.txt | AC | 41 ms | 640 KB |
012.txt | AC | 41 ms | 640 KB |
013.txt | AC | 41 ms | 640 KB |
014.txt | AC | 41 ms | 640 KB |
015.txt | AC | 41 ms | 640 KB |
016.txt | AC | 41 ms | 640 KB |
017.txt | AC | 41 ms | 640 KB |
018.txt | AC | 41 ms | 640 KB |
019.txt | AC | 41 ms | 640 KB |
020.txt | AC | 41 ms | 640 KB |
021.txt | AC | 5 ms | 256 KB |
022.txt | AC | 5 ms | 256 KB |
023.txt | AC | 41 ms | 640 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |