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RGB7204 - Эхний n тооны нийлбэр

Эхний n тооны нийлбэрийг тодорхой давталт ашиглан ол.

Input

Int төрлийн эерэг бүхэл тоо өгөгдөнө.

Output

1-ээс n тооны нийлбэр.

Example

Input:
5

Output:
15

Нэмсэн:Bataa
Огноо:2011-06-12
Хугацааны хязгаарлалт:1s
Эх кодын хэмжээний хязгаарлалт:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Програмчлалын хэлүүд:ADA95 ASM32 BASH BF C NCSHARP CSHARP C++ 4.3.2 CPP C99 CLPS LISP sbcl LISP clisp D ERL FORTRAN HASK ICON ICK JAVA JS-RHINO JULIA LUA NEM NICE OCAML PAS-GPC PAS-FPC PERL PHP PIKE PRLG-swi PYTHON PYPY3 PYTHON3 RUBY SCALA SCM guile ST TCL WHITESPACE

hide comments
2018-11-22 08:25:59
where am i
2018-11-22 08:25:48
ok so basically i dont understand this
2018-11-12 12:19:46
c tavichih tehuu
2018-10-22 10:32:15
#include <iostream>
using namespace std;

int main() {
int a,i,b;
cin>>a;
b=0;
for (i=0;i<=a;i++)
{
b=b+i;
}
cout<<b;
}
2018-09-27 08:29:14
#include <iostream>
using namespace std;

int main() {
int a,i,b;
cin>>a;
b=0;
for (i=0;i<=a;i++)
{
b=b+i;
}
cout<<b;
}
2018-09-27 08:27:48
yes
2018-09-27 08:26:43
no u
2018-09-27 08:26:23
so basically im monky

Last edit: 2018-09-27 08:27:09
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