Submission #1839776
Source Code Expand
#include<bits/stdc++.h> #define range(i,a,b) for(int i = (a); i < (b); i++) #define rep(i,b) for(int i = 0; i < (b); i++) #define all(a) (a).begin(), (a).end() #define show(x) cerr << #x << " = " << (x) << endl; //const int INF = 1e8; using namespace std; #define int long long bool canUse(bitset<31> b, int lim){ rep(i,lim){ if(b[i]) return false; } if(not b[lim]) return false; return true; } signed main(){ int n; cin >> n; vector<bitset<31>> a(n); vector<bool> used(n,0); bitset<31> b(0); rep(i,n){ int in; cin >> in; a[i] = bitset<31>(in); b ^= a[i]; } int ans = 0; for(int i = 30; i >= 0; i--){ if(b[i]){ int tmp = (1 << (i + 1)) - 1; rep(j,n){ if(used[j]) continue; if(not canUse(a[j], i)) continue; b ^= tmp; ans++; break; } } } cout << (b == 0 ? ans : -1) << endl; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | noy72 |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 891 Byte |
Status | AC |
Exec Time | 48 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 | 44 ms | 1024 KB |
003.txt | AC | 14 ms | 768 KB |
004.txt | AC | 17 ms | 640 KB |
005.txt | AC | 14 ms | 512 KB |
006.txt | AC | 40 ms | 1024 KB |
007.txt | AC | 41 ms | 1024 KB |
008.txt | AC | 41 ms | 1024 KB |
009.txt | AC | 40 ms | 1024 KB |
010.txt | AC | 41 ms | 1024 KB |
011.txt | AC | 43 ms | 1024 KB |
012.txt | AC | 40 ms | 1024 KB |
013.txt | AC | 41 ms | 1024 KB |
014.txt | AC | 41 ms | 1024 KB |
015.txt | AC | 41 ms | 1024 KB |
016.txt | AC | 41 ms | 1024 KB |
017.txt | AC | 42 ms | 1024 KB |
018.txt | AC | 41 ms | 1024 KB |
019.txt | AC | 40 ms | 1024 KB |
020.txt | AC | 41 ms | 1024 KB |
021.txt | AC | 6 ms | 256 KB |
022.txt | AC | 6 ms | 384 KB |
023.txt | AC | 48 ms | 1024 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |