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难道是我错误理解题意了?

Posted by Gump at 2005-09-02 23:40:46 on Problem 2370
    我的解题思路是先把输入的含有n个元素的数组a排序(从小到大),然后对前(n+1)/2个元素作如下的处理,
s+= (a[i]+1)/2 。还请大牛指点迷津。
     # include< iostream.h >
# include< stdlib.h >
int compare( const void *p, const void *q)
{
	return *(int*)p > *(int*)q;
}
int main()
{
	int a[101];
	int n,m,s=0;
	cin>>n;
	for( int i=0; i<n; i++ )
		cin>>a[i];
	qsort( a,n,sizeof( int ), compare );
	m= ( n+1 )/2;
	for( i=0; i<m; i++ )
		s+= ( a[i]+1 )/2;
	cout<<s;
	return 0;
}

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