#include <stdio.h>
#include <math.h>

int main(void)
{
   int processes, counter;
   double min, max, mean, sum, sumSqrs, stdDev, num;

   scanf("%d", &processes);

   counter = 0;
   while (counter < processes) {
      scanf("%lf", &num);

      if (num > max)
         max = num;
      if (num < min)
         min = num;

      sumSqrs += pow (num, 2);
      sum += num;
      counter += 1;
   }

   printf("Min: %.6lf\n", min);
   printf("Max: %.6lf\n", max);

   mean = sum / processes;
   printf("Mean: %.6lf\n", mean);

   stdDev = sqrt( (sumSqrs / processes) - pow(mean, 2) );
   printf("Std Dev: %.6lf\n", stdDev);
   return 0;
}