#include<stdio.h>
#include<stdlib.h>


int main()
{
    FILE *f;
    int a[10][10];
    int n;
    printf("citeste numarul de elemete");
    scanf("%d",&n);
    f=fopen("matrice.bin","wb");
    int i,j;
    for(i=0; i<n; i++)
        for(j=0; j<n; j++)
        {
            printf("a[%d][%d]=",i,j);
            scanf("%d",&a[i][j]);
        }
    for(i=0; i<n; i++)
        fwrite(a[i],sizeof(a[0][0]),n,f);

    fclose(f);
    f=fopen("matrice.bin","rb");
    fseek(f,0L,2);
    int m;
    m=sqrt(ftell(f)/sizeof(int));
    printf("%d\n",m);
    int b[10][10];
    fseek(f,0L,0);
    for(i=0; i<m; i++)
        fread(b[i],sizeof(a[0][0]),m,f);
    for(i=0; i<n; i++)
    {
        for(j=0; j<n; j++)
            printf("%d ",b[i][j]);
        printf("\n");
    }
}