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RGB7216 - Үржвэр нийлбэр 4

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

Input

Натурал тоо өгөгдөнө.

Output

Нийлбэр.

Example

Input:
4

Output:
210

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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2022-05-26 02:01:30
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2021-11-19 00:47:18
nt a,b,c,d=0;
Scanner cs = new Scanner(System.in);
a = cs.nextInt();
for(int i=1; i<=a; i++){
c=i*(i+1)*(i+2);
d=d+c;
}
System.out.print(d);
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