杭电（hdu）2053 Switch Game 水题

Posted 2020-09-22 blfbuaa

Switch Game

Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 13113    Accepted Submission(s): 7970

Problem Description

There are many lamps in a line. All of them are off at first. A series of operations are carried out on these lamps. On the i-th operation, the lamps whose numbers are the multiple of i change the condition ( on to off and off to on ).

 

Input

Each test case contains only a number n ( 0< n<= 10^5) in a line.

 

Output

Output the condition of the n-th lamp after infinity operations ( 0 - off, 1 - on ).

 

Sample Input

1
5

 

Sample Output

1
0

Hint
hint
 

Consider the second test case:

The initial condition	   : 0 0 0 0 0 …
After the first operation  : 1 1 1 1 1 …
After the second operation : 1 0 1 0 1 …
After the third operation  : 1 0 0 0 1 …
After the fourth operation : 1 0 0 1 1 …
After the fifth operation  : 1 0 0 1 0 …

The later operations cannot change the condition of the fifth lamp any more. So the answer is 0.

 

測试数据量不大，能够简单粗暴，这道题也就是水题。

#include <iostream>
#include <cstring>
using namespace std;

int main()
{
	int n;
	int count;
	while(cin>>n)
	{
		count=0;
		for(int i=1;i<=n;i++)
		{
			if(n%i==0)
			{
				count++;
			}
		}
		if(count%2==0)cout<<"0"<<endl;
		else cout<<"1"<<endl;
	}
	return 0;
}