Submission #2200961
Source Code Expand
#include <iostream> #include <string> #include <vector> #include <algorithm> #include <queue> #include <set> #include <map> #include <string.h> #include <cmath> using namespace std; typedef long long i64; typedef long double ld; typedef pair<i64,i64> P; #define rep(i,s,e) for(int (i) = (s);(i) <= (e);++(i)) int n; //Nim ^ ^ == 0 -> win i64 a[101010]; int main() { cin >> n; for(int i = 0;i < n;i++) cin >> a[i]; int result = 0; i64 sum = 0; for(int i = 0;i < n;i++) sum = sum ^ a[i]; for(int i = 30;i >= 0;i--) { int base = (1 << i) - 1; for(int j = 0;j < n;j++) { if(a[j] ^ (a[j] - 1) == base && (sum & (1 << (i - 1)))) { result++; sum ^= base; break; } } } if(result > n || sum != 0) result = -1; cout << result << endl; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | niuez |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 829 Byte |
Status | WA |
Exec Time | 46 ms |
Memory | 1024 KB |
Judge Result
Set Name | Sample | All | ||||||
---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 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 | 46 ms | 1024 KB |
003.txt | AC | 15 ms | 768 KB |
004.txt | WA | 16 ms | 640 KB |
005.txt | WA | 13 ms | 512 KB |
006.txt | AC | 41 ms | 1024 KB |
007.txt | AC | 42 ms | 1024 KB |
008.txt | AC | 41 ms | 1024 KB |
009.txt | AC | 42 ms | 1024 KB |
010.txt | AC | 42 ms | 1024 KB |
011.txt | AC | 42 ms | 1024 KB |
012.txt | AC | 42 ms | 1024 KB |
013.txt | AC | 42 ms | 1024 KB |
014.txt | AC | 42 ms | 1024 KB |
015.txt | AC | 42 ms | 1024 KB |
016.txt | WA | 42 ms | 1024 KB |
017.txt | WA | 42 ms | 1024 KB |
018.txt | AC | 41 ms | 1024 KB |
019.txt | AC | 42 ms | 1024 KB |
020.txt | WA | 42 ms | 1024 KB |
021.txt | WA | 5 ms | 256 KB |
022.txt | WA | 5 ms | 256 KB |
023.txt | WA | 43 ms | 1024 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |