>   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！！ (19) huahaoyueyuan 2010-09-04 11:53:10