杭电（hdu）2053 Switch Game 水题

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

Hinthint

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.

测试数据量不大，可以简单粗暴，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;
}