#include <stdio.h>

main()
{
	int num;
	int square;

	FILE * input;
	FILE * output;

	input = fopen("day1a.dat", "r");	/* Open the data file for reading */

	fscanf(input, "%d", &num);		/* Read the number */

	square = num * num;

	output = fopen("day1a.sol", "w");	/* Open the solution file */

	fprintf(output, "%d", square);	/* Write out the square value */

	/* And now close the files */
	fclose(input);
	fclose(output);
}