# include <stdio.h>

/** Emfanisi megistou arithmon apo arxeio xoris diamorfosi **/

int main()
{
	int n=0;
	double x;
	double max=0.0;
	char filename[100];
	FILE *fp;
	printf("Doste onoma arxeiou ?\n");
	gets(filename);
	fp=fopen(filename,"r");
	if(fp==NULL)
	{
		printf("To arxeio %s den yparxei i den mporeite na to diabasete \n",filename);
	}
	else
	{
		while(fscanf(fp,"%lf",&x)>0)
		{
			if(n==0 || x>max) max=x;
			n++;
		}
		printf("O megistos  ton arithmon einai %.2lf\n",max);
		fclose(fp);
	}
	return 0;
}