Submission #1000576
Source Code Expand
#include <iostream> #include <cstdio> #include <cstdlib> using namespace std; const int K = 30; int x; int n; bool a[K + 3]; int main() { // freopen("input.txt", "r", stdin); // freopen("output.txt", "w", stdout); x = 0; scanf("%d", &n); while(n--) { int y; scanf("%d", &y); x ^= y; int q = 0; while(((1 << q) & y) == 0) q++; a[q] = 1; } int ans = 0; for (int i = K; i >= 0; i--) { if (((x >> i) & 1) == 0) continue; if (!a[i]) { printf("-1\n"); return 0; } ans++; for (int j = 0; j <= i; j++) x ^= 1 << j; } printf("%d\n", ans); return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | Um_nik |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 631 Byte |
Status | AC |
Exec Time | 15 ms |
Memory | 256 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:17:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ ./Main.cpp:21:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &y); ^
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 | 256 KB |
003.txt | AC | 8 ms | 256 KB |
004.txt | AC | 7 ms | 256 KB |
005.txt | AC | 6 ms | 256 KB |
006.txt | AC | 15 ms | 256 KB |
007.txt | AC | 15 ms | 256 KB |
008.txt | AC | 15 ms | 256 KB |
009.txt | AC | 15 ms | 256 KB |
010.txt | AC | 15 ms | 256 KB |
011.txt | AC | 15 ms | 256 KB |
012.txt | AC | 15 ms | 256 KB |
013.txt | AC | 15 ms | 256 KB |
014.txt | AC | 15 ms | 256 KB |
015.txt | AC | 15 ms | 256 KB |
016.txt | AC | 15 ms | 256 KB |
017.txt | AC | 15 ms | 256 KB |
018.txt | AC | 15 ms | 256 KB |
019.txt | AC | 15 ms | 256 KB |
020.txt | AC | 15 ms | 256 KB |
021.txt | AC | 3 ms | 256 KB |
022.txt | AC | 3 ms | 256 KB |
023.txt | AC | 15 ms | 256 KB |
example0.txt | AC | 2 ms | 256 KB |
example1.txt | AC | 2 ms | 256 KB |