#include <stdio.h>
int n[6];
int main()
{
	freopen("in.txt","r",stdin);
	int a=0;
	while(1)
	{
		for(int i=0;i<6;i++)
			scanf("%d",&n[i]);
		if((n[0]==0)&&(n[1]==0)&&(n[2]==0)&&(n[3]==0)&&(n[4]==0)&&(n[5]==0))
			break;
		a++;
		int sum=0;
		for(int i=0;i<6;i++)
			sum=sum+n[i]*(i+1);
		if(sum%2==0)
		{
			int c=0,b=0;
			for(int i=5;i>=0;i--)
			{
				if(c>b)
				{
					b+=n[i]*(i+1);
				}
				else
				{
					c+=n[i]*(i+1);
				}

			}

				if((c==b)&&(c!=0))
				{
					printf("Collection #%d:",a);
					printf("Can be divided.");
					printf("\n");
				}
				if(c!=b)
				{
					printf("Collection #%d:",a);
					printf("Can't be divided.");
					printf("\n");
				}
		}

		else
		{
			printf("Collection #%d:",a);
			printf("Can't be divided.");
			printf("\n");
		}
	}

	return 0;
}

http://www.cnblogs.com/ACShiryu/archive/2011/07/23/2114718.html