Submission #1001640
Source Code Expand
#include <bits/stdc++.h> using namespace std; int main() { int n, ans = 0, tot = 0; scanf("%d", &n); set <int> S; for (int i = 0; i < n; ++i) { int x; scanf("%d", &x); int y = (x^(x-1)); S.insert(y); tot^=x; } for (int i = 29; i >= 0; --i) { if((tot & (1<<i))) { int need = (1<<(i+1))-1; if(S.find(need) != S.end()) { tot^=need; ans++; } else { printf("-1\n"); return 0; } } } printf("%d\n", ans); return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | akulsareen |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 507 Byte |
Status | AC |
Exec Time | 17 ms |
Memory | 256 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:6:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ ./Main.cpp:11:18: 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 |
---|---|
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 | 15 ms | 256 KB |
003.txt | AC | 8 ms | 256 KB |
004.txt | AC | 8 ms | 256 KB |
005.txt | AC | 6 ms | 256 KB |
006.txt | AC | 17 ms | 256 KB |
007.txt | AC | 17 ms | 256 KB |
008.txt | AC | 17 ms | 256 KB |
009.txt | AC | 17 ms | 256 KB |
010.txt | AC | 17 ms | 256 KB |
011.txt | AC | 17 ms | 256 KB |
012.txt | AC | 17 ms | 256 KB |
013.txt | AC | 17 ms | 256 KB |
014.txt | AC | 17 ms | 256 KB |
015.txt | AC | 17 ms | 256 KB |
016.txt | AC | 17 ms | 256 KB |
017.txt | AC | 16 ms | 256 KB |
018.txt | AC | 17 ms | 256 KB |
019.txt | AC | 17 ms | 256 KB |
020.txt | AC | 16 ms | 256 KB |
021.txt | AC | 4 ms | 256 KB |
022.txt | AC | 4 ms | 256 KB |
023.txt | AC | 14 ms | 256 KB |
example0.txt | AC | 3 ms | 256 KB |
example1.txt | AC | 3 ms | 256 KB |