为什么#include"stdio.h"
main()
{
	int n,s,d,i;
	scanf("%d",&n);
	for(i=0;i<n;i++)
	{
		scanf("%d%d",&s,&d);			
		 if((s-d>=0)&&((s-d)%2==0)&&((s+d)%2==0))				
		 printf("%d %d\n",(s+d)/2,(s-d)/2);
		else
				printf("impossible\n");

	}


}能过，可是下面的却不能过！！明明s+d>0多余的条件，对结果没有影响，却过不了！！！
#include"stdio.h"
main()
{
	int n,s,d,i;
	scanf("%d",&n);
	for(i=0;i<n;i++)
	{
		scanf("%d%d",&s,&d);			
		 if((s-d>=0)&&((s-d)%2==0)&&((s+d)%2==0)&&((a+b)>0))				
		 printf("%d %d\n",(s+d)/2,(s-d)/2);
		else
				printf("impossible\n");

	}


}

• Re:郁闷！！ (36) leslie_1 2010-07-15 17:28:56
• Re:郁闷！！ (628) huahaoyueyuan 2010-09-04 11:51:15
  • Re:郁闷！！ (19) huahaoyueyuan 2010-09-04 11:53:10