#include "stdio.h"
#include "ctype.h"

#define MAXLINE 100

double myatof(char s[]);
int mygetline(char line[], int limite);

int main(void)
{
  char s[MAXLINE];
  double sum = 0;
  scanf("%lf", &sum);
  while (mygetline(s, MAXLINE) >= 0)
    printf("\t%g\n", sum += myatof(s));
  return 0;
}


int mygetline(char s[], int limite)
/* stocke la ligne dans s[] et renvoit la taille de la ligne */
{
  int c;
  int i = 0;

  while (--limite > 0 && (c = getchar()) != EOF && c != '\n')
    s[i++] = c;
  if (c == '\n')
    s[i++] = c;
  s[i] = '\0';
  return i;
}

double myatof(char s[])
{
  double val, power;
  int i, sign;

  for (i=0; isspace(s[i]); i++)
    ;
  sign = (s[i] == '-') ? -1 : 1;
  if (s[i] == '-' || s[i] == '+')
    i++;
  for (val = 0; isdigit(s[i]); i++)
    val = 10 * val + (s[i] - '0');
  if (s[i] == '.' || s[i] == ',')
    i++;
  for (power = 1; isdigit(s[i]); i++){
    val = 10 * val + (s[i] - '0');
    power *= 10;
      }
  return sign * val / power;
}