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RGB7215 - Үржвэр нийлбэр 3

1*2+3*4+5*6+...+(n-1)*n нийлбэрийг ол.

Input

Натурал тэгш тоо өгөгдөнө.

Output

Нийлбэр.

Example

Input:
6

Output:
44
Submit solution!
Нэмсэн:Bataa
Огноо:2013-01-21
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
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Өмнөх 1  2  3  4  5  6  7  8  9  10  11 Дараагийн >
2025-05-20 09:05:32
ermuun sn nz
2025-05-14 07:52:48
#include <bits/stdc++.h>
using namespace std;
int main() {
int n, a=0,i;
cin >> n;
for(i=1; i<=n-1; i=i+2){
a = a + i*(i+1);
}
cout << a;
}

mai munhuu hosoo 2
2025-01-20 04:40:54
#include<iostream>
using namespace std ;
int main()
{
int n,sum,i,idx1=1 ;
cin>>n ;

for(i=2;i<=n ; i=i+2)
{
sum=sum + (i-1)*i;
}

cout<<sum;
return 0;
}//jaja
2024-12-09 12:00:11
a

Last edit: 2024-12-09 12:00:58
2024-11-28 03:34:40
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hahahhahahaahahahahahahahahahahahahahahahhahahahahahahahahahahahahahahhahahaahahahahahahahahahahahahahahahhahahahahahahahahahahahahahahhahahaahahahahahahahahahahahahahahahhahahahahahahahahahahahahahahhahahaahahahahahahahahahahahahahahahhahahahahahahahahahahahahahahhahahaahahahahahahahahahahahahahahahhahahahahahahahahahahahahahah
2024-05-26 06:04:43
stfu i can copy at anytime i want
2024-04-20 08:19:37
temuge is bad so bad
2024-03-03 06:40:03
kim jong un
2024-03-03 06:39:45
mistusbishi nissan mistubishi nissan wooh happy 17th birthday
2024-01-18 06:52:01
#include<iostream>
using namespace std;
int main(){
int n,k=0,i;
cin>>n;
for(i=1; i<=n; i++)
{k=k+i*(i+1);}
cout<<k;
}
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