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为什么老是wa,测试时是对的啊!??求高手指正

Posted by 19920719 at 2011-07-18 21:06:19 on Problem 1657
#include <stdio.h>
#include <math.h>
main()
{
    int i,j,n,w,x,y;
    char a[5],b[5];
    scanf("%d",&n);    
    while(n)
    {  
        scanf("%s%s",a,b);
        	x=fabs(b[0]-a[0]);
        	y=fabs(b[1]-a[1]);
        if(x==y&&x==0&&y==0)
        printf("0 0 0 0\n");
        else if(x==y&&x!=0&&y!=0)
        {
	    printf("%d 1 2 1\n",x);	
        }	    
        else if(x==0&&y!=0)
        printf("%d 1 1 Inf\n",y);
        else if(y==0&&x!=0)
        printf("%d 1 1 Inf\n",x);
        else if(x!=0&&y!=0&&x!=y)
        {
      	 if(x>y)
        w=x;                                                                                                                                                                                                        
        else
        w=y; 
        printf("%d 2 2 Inf\n",w);
        }
        n--;     
        } 		
    }

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