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请问一下为什么这样都WA?#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<memory.h>
char s[200][200];
int Comp(const void *p1,const void *p2)
{
return strcmp((char *)p1,(char *)p2);
}
void main()
{
int i,j,n,p,sum;
scanf("%d %d",&n,&p);
memset(s,'0',sizeof(s));
for(i=1;i<=n;i++)
s[i][p+1]='\0';
while(scanf("%d %d",&i,&j)!=EOF)
{
/* if(i==0&&j==0)
break;*/
s[i][j]='1';
}
qsort(s,n,sizeof(s[0]),Comp);
/* for(i=1;i<=n;i++)
printf("%s\n",s[i]);*/
i=1;sum=1;
while(i<n)
{
if(strcmp(s[i],s[i+1])!=0)
sum++;
i++;
}
printf("%d\n",sum);
}
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