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求大牛帮忙看下哪错了,为什么老是WA?C语言

Posted by 20054953 at 2007-01-18 20:11:09 on Problem 1007
#include"stdio.h"
#include <stdlib.h>
#include"string.h"
main()
{int n,m,i,j,k,c;
 long sum[51],d[51];
 char a[100][51];
 scanf("%d%d",&n,&m);
 for(i=0;i<m;i++)
         scanf("%s",&a[i]);
 for(i=0;i<m;i++)
     {sum[i]=0;
      for(j=0;j<n-1;j++)
          for(k=j+1;k<n;k++)
              if(a[i][j]>a[i][k])
                 sum[i]=sum[i]+1;
      }
 for(i=0;i<m;i++)
     d[i]=sum[i];
 for(i=1;i<m;i++)
     for(j=0;j<m-i;j++)
         if(d[j]>d[j+1])
           {c=d[j];
            d[j]=d[j+1];
            d[j+1]=c;
            }
 for(i=0;i<m;i++)
    {if(d[i]==d[i+1]) continue;
     for(j=0;j<m;j++)
         if(d[i]==sum[j])
            printf("%s\n",a[j]);
     }     
 }

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