Submission #2403453
Source Code Expand
#include <bits/stdc++.h> using namespace std; typedef long long ll; #define rep(i,a) for(int i=0;i<(a);i++) const ll MOD=1000000007; int main(){ int N; cin>>N; int sum=0; set<int> s; rep(i,N){ int a; cin>>a; sum^=a; // a^(a-1)=111・・・111 s.insert(__builtin_popcount(a^(a-1))); } int cnt=0; while(sum){ // __builtin_clz:2進で表した場合いくつ0を埋めるか int x=32-__builtin_clz(sum); if(!s.count(x)){ cout<<-1<<endl; return 0; } cnt++; sum^=(1LL<<x)-1; } cout<<cnt<<endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | misosoup |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 608 Byte |
Status | AC |
Exec Time | 46 ms |
Memory | 256 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 | 256 KB |
003.txt | AC | 15 ms | 256 KB |
004.txt | AC | 16 ms | 256 KB |
005.txt | AC | 13 ms | 256 KB |
006.txt | AC | 44 ms | 256 KB |
007.txt | AC | 44 ms | 256 KB |
008.txt | AC | 44 ms | 256 KB |
009.txt | AC | 44 ms | 256 KB |
010.txt | AC | 44 ms | 256 KB |
011.txt | AC | 44 ms | 256 KB |
012.txt | AC | 46 ms | 256 KB |
013.txt | AC | 44 ms | 256 KB |
014.txt | AC | 44 ms | 256 KB |
015.txt | AC | 44 ms | 256 KB |
016.txt | AC | 44 ms | 256 KB |
017.txt | AC | 44 ms | 256 KB |
018.txt | AC | 44 ms | 256 KB |
019.txt | AC | 44 ms | 256 KB |
020.txt | AC | 44 ms | 256 KB |
021.txt | AC | 5 ms | 256 KB |
022.txt | AC | 5 ms | 256 KB |
023.txt | AC | 41 ms | 256 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |