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RGB7070 - Нийлбэр 1

Өгөгдсөн натурал тоо n хүртэлх натурал тоонуудын нийлбэрийг ол.

Давталт ашиглахгүй болно.

Input

Натурал тоо n өгөгдөнө.

Output

Нийлбэр

Example

Input:
10

Output:
55

Нэмсэн:Bataa
Огноо:2013-01-06
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
2024-02-06 04:51:44
tuslach
2024-01-15 08:23:31
hh
2024-01-09 14:47:08
davtalt ashiglahgui shde ;(
2024-01-01 06:31:08
#include <iostream>
using namespace std;

int main() {
int n,sum;
cin >> n;
sum = n * (n + 1) / 2;
cout << sum << endl;
return 0;
}
2023-12-08 05:13:58
#include <iostream>
using namespace std;

int main() {
int n,a,b,sum=0;
cin >> n;
a = n;
while (a >= 10) {
a /= 10;
}
b = n % 10;

sum= a + b;
cout << sum;

return 0;
}

2023-11-12 02:58:03
bitgui huuullll

Last edit: 2023-11-12 02:58:21
2023-09-05 08:16:52
psda2
2023-07-19 07:55:20
bitgiii huul chi huulad baih ym bol muu surna shuu
2023-03-16 05:00:12
#include <bits/stdc++.h>
int n,i,s;
int main()
{
scanf("%d",&n);
for (i=1;i<=n;i++)
s=s+i;
printf("%d",s);
return 0;
}//huul suguuda
2023-03-15 13:26:39
huulhaa boliochee huuhduud
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