Submission #1012892
Source Code Expand
#include <bits/stdc++.h> using namespace std; const int N = 100005; int n, a[N], b[N]; void ins(int x) { for (int i = 30; i >= 0; i--) { if (x>>i&1) { if (b[i]) x ^= b[i]; else { b[i] = x; break; } } } } int main() { scanf("%d", &n); int tot = 0, x; for (int i = 1; i <= n; i++) { scanf("%d", &x); tot ^= x; ins(x^(x - 1)); } int ans = 0; for (int i = 30; i >= 0; i--) { if (tot>>i&1) { if (b[i]) { ans++; tot ^= b[i]; } } } if (tot) printf("-1\n"); else printf("%d\n", ans); return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | lab104_yifan |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 589 Byte |
Status | AC |
Exec Time | 20 ms |
Memory | 384 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:21:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ ./Main.cpp:24:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 500 / 500 | ||||
Status |
|
|
Set Name | Test Cases |
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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 | 3 ms | 256 KB |
001.txt | AC | 3 ms | 256 KB |
002.txt | AC | 20 ms | 256 KB |
003.txt | AC | 11 ms | 256 KB |
004.txt | AC | 10 ms | 256 KB |
005.txt | AC | 7 ms | 256 KB |
006.txt | AC | 20 ms | 256 KB |
007.txt | AC | 20 ms | 256 KB |
008.txt | AC | 20 ms | 256 KB |
009.txt | AC | 20 ms | 256 KB |
010.txt | AC | 20 ms | 256 KB |
011.txt | AC | 20 ms | 256 KB |
012.txt | AC | 20 ms | 256 KB |
013.txt | AC | 20 ms | 256 KB |
014.txt | AC | 20 ms | 256 KB |
015.txt | AC | 20 ms | 256 KB |
016.txt | AC | 20 ms | 256 KB |
017.txt | AC | 20 ms | 256 KB |
018.txt | AC | 20 ms | 256 KB |
019.txt | AC | 20 ms | 256 KB |
020.txt | AC | 20 ms | 256 KB |
021.txt | AC | 4 ms | 256 KB |
022.txt | AC | 4 ms | 256 KB |
023.txt | AC | 19 ms | 256 KB |
example0.txt | AC | 3 ms | 256 KB |
example1.txt | AC | 3 ms | 384 KB |