Must I use long arithmetic to solve this problem?
If no, than what standart type i must to use?

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

int  main()
{
  long double  a, b;
  int n, i, j;

  b = 0.0;

  scanf("%ld", &n);
  for  (i = 0;  i < n;  ++i) {
    scanf("%Lf", &a);
    b += a;
  }

  printf("%.18Le", b);

  return 0;
}

Sorry for my bad English :(

Edited by author 28.09.2004 01:50

What is exponential notation in this problem? I think that it is A.BeK, where 1<=A<=9. Am I right?
What parts can be absent?
1)For example, are the numbers

1.0
1.e10
.1
5
9e1
possible in this problem?

2) Which output is correct?
7.000000000000000000
OR
7.000000000000000000e0

3) Which output is correct?
1.5e3
OR
1.500000000000000000e3

Are you sure that all of "next N lines contain the elements in exponential notation with 19 significant digits in mantissa" ? Especially "one number on each string" ("по одному в строке"), as it is written in russian version of problem. (Test #6).

Is it locked now?? Who can tell me!

Is it locked now?? Who can tell me!

Why Problem Temporary Locked?
What is it?