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

FILE* fp;
int n,i,j,k,q;
int z[2];
int x[4001]={0};
int used[4001]={0};
int result;
main ()
{
	z[0]=3;
	z[1]=2000;
	fp = fopen ("arith.out","rt");
	for (j=0;j<=1;j++)
	{
		memset (x,0,sizeof(x));
		memset (used,0,sizeof(used));
		for (i=0;i<=z[j];i++)
		{
			result=fscanf (fp,"%d",&x[i]);
			if ((result==0)||(result==EOF)) {printf ("Wrong\n");exit(0);}
			if ((x[i]>z[j])||(x[i]<0))
				{printf ("Wrong\n");exit(0);} //too high or too low num used
			used[x[i]]++;
		}
		for (i=0;i<=z[j];i++)
			if (used[x[i]]!=1) {printf ("Wrong\n");exit(0);} //not enuf nums used
		for (i=0;i<=z[j];i++)
		{
			for (q=i+1;q<=z[j];q++)
			{
				for (k=q+1;k<=z[j];k++)
				{
					if (x[q]-x[i]==x[k]-x[q]) {printf("Wrong\n");exit(0);};
				}
			}
		}
		printf("Correct\n");
	}
	fclose (fp);
}
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006~ASP 0159~Buffering Off~Buffering must be on.