Submission #1247854
Source Code Expand
#include <bits/stdc++.h> #include <iomanip> using namespace std; typedef long long LL; typedef pair<int, int> PII; typedef pair<LL, LL> PLL; typedef long double LD; typedef pair<LD, LD> PLDLD; #define FOR(i,a,b) for(int i=(a);i<(b);++i) #define REP(i,n) FOR(i,0,n) #define CLR(a) memset((a), 0 ,sizeof(a)) #define ALL(a) a.begin(),a.end() const double eps=1e-5; const LL INF=1e15; int main() { int n; cin>>n; vector<PII> a(n+1); REP(i,n) { int s; cin>>s; a[i]=PII(s,0); } int sum=0; int ans=0; bool flag=1; for(int k=30;k>=0;k--) { sort(ALL(a),greater<PII>()); sum=0; for(int i=0;i<a.size();i++) { sum^=(1<<k)&a[i].first; if(a[i+1].first<(1<<k)) { if(sum!=0) { if(a[i]==PII(1<<k, 0)) { a[i]=PII(a[i].first-1,1); ans++; } else { flag=0; } } break; } a[i].first-=(1<<k); } } if(!flag)ans=-1; cout<<ans<<endl; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | vjudge1 |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 1248 Byte |
Status | AC |
Exec Time | 134 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 | 106 ms | 1024 KB |
003.txt | AC | 50 ms | 768 KB |
004.txt | AC | 64 ms | 640 KB |
005.txt | AC | 54 ms | 512 KB |
006.txt | AC | 127 ms | 1024 KB |
007.txt | AC | 128 ms | 1024 KB |
008.txt | AC | 128 ms | 1024 KB |
009.txt | AC | 127 ms | 1024 KB |
010.txt | AC | 134 ms | 1024 KB |
011.txt | AC | 128 ms | 1024 KB |
012.txt | AC | 129 ms | 1024 KB |
013.txt | AC | 129 ms | 1024 KB |
014.txt | AC | 129 ms | 1024 KB |
015.txt | AC | 134 ms | 1024 KB |
016.txt | AC | 127 ms | 1024 KB |
017.txt | AC | 127 ms | 1024 KB |
018.txt | AC | 129 ms | 1024 KB |
019.txt | AC | 126 ms | 1024 KB |
020.txt | AC | 128 ms | 1024 KB |
021.txt | AC | 12 ms | 256 KB |
022.txt | AC | 12 ms | 384 KB |
023.txt | AC | 104 ms | 1024 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |