我的代码：
#include<iostream.h>
void main()
{
	int n,input[30],sum;
	while(cin>>n)
	{
		if(n==0)break;
		sum=0;
		for(int i=0;i<n;i++)
		{
			cin>>input[i];
			sum+=input[i];
		}
		if(sum%2!=0)
		{
			cout<<"No equal partitioning."<<endl;
			continue;
		}
		sum/=2;
		for(i=0;i<n;i++)
		{
			sum-=input[i];
			if(sum<=0)break;
		}
		if(sum==0)cout<<"Sam stops at position "<<i+1<<" and Ella stops at position "<<i+2<<".\n";
		else cout<<"No equal partitioning."<<endl;
	}
}
不需要算两个人的，算一个就行了