Submission #1404310
Source Code Expand
#include<bits/stdc++.h> using namespace std; int pw[(1<<16)+3]; void pre(){ for(int i=0;i<16;i++) pw[1<<i]=i; } int pos(int val){ val=val&(-val); if((val>>16)==0) return pw[val]; else return 16+pw[val>>16]; } int n,tot; vector<int> v[35]; int main(){ scanf("%d",&n);pre(); for(int i=1,t;i<=n;i++){ scanf("%d",&t); tot^=t;v[pos(t)].push_back(t); } int ans=0; for(int i=30;i>=0;i--){ if((tot>>i)&1){ if(v[i].size()==0) return puts("-1"),0; int t=v[i][0]-1;tot=tot^(t+1)^t; ans++; } } cout<<ans<<endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | Wuvin |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 568 Byte |
Status | AC |
Exec Time | 14 ms |
Memory | 896 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:15:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n);pre(); ^ ./Main.cpp:17:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^
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 | 13 ms | 892 KB |
003.txt | AC | 6 ms | 640 KB |
004.txt | AC | 6 ms | 640 KB |
005.txt | AC | 5 ms | 384 KB |
006.txt | AC | 14 ms | 896 KB |
007.txt | AC | 14 ms | 896 KB |
008.txt | AC | 14 ms | 896 KB |
009.txt | AC | 14 ms | 896 KB |
010.txt | AC | 14 ms | 768 KB |
011.txt | AC | 14 ms | 896 KB |
012.txt | AC | 14 ms | 896 KB |
013.txt | AC | 14 ms | 768 KB |
014.txt | AC | 14 ms | 896 KB |
015.txt | AC | 14 ms | 896 KB |
016.txt | AC | 14 ms | 768 KB |
017.txt | AC | 14 ms | 768 KB |
018.txt | AC | 14 ms | 768 KB |
019.txt | AC | 14 ms | 768 KB |
020.txt | AC | 14 ms | 896 KB |
021.txt | AC | 2 ms | 256 KB |
022.txt | AC | 2 ms | 384 KB |
023.txt | AC | 13 ms | 892 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |