Submission #1000752
Source Code Expand
#include <iostream> #include <iomanip> #include <cstdio> #include <cstdlib> #include <algorithm> #include <numeric> #include <random> #include <vector> #include <array> #include <bitset> #include <queue> #include <set> #include <unordered_set> #include <map> #include <unordered_map> using namespace std; using ll = long long; using ull = unsigned long long; constexpr ll TEN(int n) { return (n==0) ? 1 : 10*TEN(n-1); } int bsr(int x) { return 31 - __builtin_clz(x); } int main() { ios::sync_with_stdio(0); cout << setprecision(20); int n; cin >> n; int sm = 0; vector<int> v; for (int i = 0; i < n; i++) { int a; cin >> a; sm ^= a; v.push_back(a^(a-1)); } sort(v.begin(), v.end(), greater<int>()); int co = 0; for (int d: v) { if (sm && bsr(d) == bsr(sm)) { co++; sm ^= d; } } if (sm) { cout << -1 << endl; } else { cout << co << endl; } return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | yosupo |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 1055 Byte |
Status | AC |
Exec Time | 17 ms |
Memory | 892 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 | 2 ms | 256 KB |
001.txt | AC | 2 ms | 256 KB |
002.txt | AC | 15 ms | 892 KB |
003.txt | AC | 8 ms | 640 KB |
004.txt | AC | 8 ms | 640 KB |
005.txt | AC | 6 ms | 512 KB |
006.txt | AC | 17 ms | 892 KB |
007.txt | AC | 17 ms | 892 KB |
008.txt | AC | 17 ms | 892 KB |
009.txt | AC | 17 ms | 892 KB |
010.txt | AC | 17 ms | 892 KB |
011.txt | AC | 17 ms | 892 KB |
012.txt | AC | 17 ms | 892 KB |
013.txt | AC | 17 ms | 892 KB |
014.txt | AC | 17 ms | 892 KB |
015.txt | AC | 17 ms | 892 KB |
016.txt | AC | 17 ms | 892 KB |
017.txt | AC | 17 ms | 892 KB |
018.txt | AC | 17 ms | 892 KB |
019.txt | AC | 17 ms | 892 KB |
020.txt | AC | 17 ms | 892 KB |
021.txt | AC | 4 ms | 384 KB |
022.txt | AC | 4 ms | 384 KB |
023.txt | AC | 15 ms | 892 KB |
example0.txt | AC | 2 ms | 256 KB |
example1.txt | AC | 2 ms | 256 KB |