#include <iostream>
using namespace std;

int main()
{
    bool have[100];
	
	int arr[15];
	int i, j;
	int count ; 
	while (cin>>arr[0] && arr[0]!=-1)
	{
	
		memset(have, false, sizeof(have));
		have[arr[0]] = true;
		count = 0;
		i=1;

		while (cin>>arr[i] && arr[i]!=0)
		{
			have[arr[i]] = true;
			i++;
		}

		for (j=0; j<=i-1; j++)
		{

			if (arr[j]%2==0 && have[arr[j]/2])
			{
				count++;
			}
		}
		cout<<count<<endl;

	}
    return 0;
}

• Re:边看电影边写代码，竟然一次 0 MS AC，黄河之水天上来~ (560) jp4422 2009-02-16 15:31:25
  • Re:边看电影边写代码，竟然一次 0 MS AC，黄河之水天上来~ (45) jp4422 2009-02-16 15:32:15
• AC (790) shenyi0828 2009-03-05 14:40:00