Submission #1757632
Source Code Expand
#include <bits/stdc++.h> using namespace std; int main() { int N, A[100000]; cin >> N; int nim = 0; bool sz[30] = {}; for(int i = 0; i < N; i++) { cin >> A[i]; nim ^= A[i]; sz[__builtin_popcount(A[i] ^ (A[i] - 1)) - 1] = true; } int ret = 0; for(int i = 30; i >= 0; i--) { if((nim >> i) & 1) { if(!sz[i]) { cout << -1 << endl; return (0); } ++ret; nim ^= (1 << 31) - 1; } } cout << ret << endl; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | ei13333 |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 507 Byte |
Status | AC |
Exec Time | 44 ms |
Memory | 640 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:24:24: warning: integer overflow in expression [-Woverflow] nim ^= (1 << 31) - 1; ^
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 | 1 ms | 256 KB |
001.txt | AC | 1 ms | 256 KB |
002.txt | AC | 44 ms | 640 KB |
003.txt | AC | 14 ms | 512 KB |
004.txt | AC | 16 ms | 384 KB |
005.txt | AC | 13 ms | 384 KB |
006.txt | AC | 41 ms | 640 KB |
007.txt | AC | 41 ms | 640 KB |
008.txt | AC | 41 ms | 640 KB |
009.txt | AC | 41 ms | 640 KB |
010.txt | AC | 41 ms | 640 KB |
011.txt | AC | 41 ms | 640 KB |
012.txt | AC | 41 ms | 640 KB |
013.txt | AC | 41 ms | 640 KB |
014.txt | AC | 41 ms | 640 KB |
015.txt | AC | 41 ms | 640 KB |
016.txt | AC | 41 ms | 640 KB |
017.txt | AC | 41 ms | 640 KB |
018.txt | AC | 41 ms | 640 KB |
019.txt | AC | 44 ms | 640 KB |
020.txt | AC | 41 ms | 640 KB |
021.txt | AC | 5 ms | 256 KB |
022.txt | AC | 5 ms | 256 KB |
023.txt | AC | 41 ms | 640 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |