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#include<stdio.h>
#define N 8
void input(int n,int p[N][N])
{
 int i,j;
 for(i=0;i<n;i++)
 {
  printf("please input the %d line:\n",i+1);
  for(j=0;j<n;j++)
  {
  scanf("%d",&p[i][j]);
 }
}
 }
void output(int n,int p[N][N])
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